f/t9.92, f15 owner's manual - yamaha motor · pdf fileyamaha motor corporation, usa ......
TRANSCRIPT
F9.92T9.92F15
OWNER’S MANUAL
66M-28199-1C
U.S.A.EditionLIT-18626-06-72
66M-9-1C Hyoshi 4/21/05 5:03 PM Page 1
EMU25060
ZMU01690
Read this owner’s manual carefully before operating your outboard motor.
66M-9-1C Hyoshi 4/21/05 5:03 PM Page 2
Important manual information
EMU31280
To the owner
Thank you for choosing a Yamaha outboardmotor. This Owner’s Manual contains infor-mation needed for proper operation, mainte-nance and care. A thorough understandingof these simple instructions will help you ob-tain maximum enjoyment from your newYamaha. If you have any question about theoperation or maintenance of your outboardmotor, please consult a Yamaha dealer.In this Owner’s Manual particularly importantinformation is distinguished in the followingways.
The Safety Alert Symbol meansATTENTION! BECOME ALERT! YOURSAFETY IS INVOLVED!
WARNING
EWM00780
Failure to follow WARNING instructionscould result in severe injury or death tothe machine operator, a bystander, or aperson inspecting or repairing the out-
board motor.
CAUTION:
ECM00700
A CAUTION indicates special precautionsthat must be taken to avoid damage to the
outboard motor.
NOTE:
A NOTE provides key information to make
procedures easier or clearer.
Yamaha continually seeks advancements inproduct design and quality. Therefore, whilethis manual contains the most current prod-uct information available at the time of print-ing, there may be minor discrepanciesbetween your machine and this manual. Ifthere is any question concerning this manu-
al, please consult your Yamaha dealer.
NOTE:
The F9.9MH2, F9.9ER2, T9.9ER2,T9.9EH2, F15MH, F15EH, F15PR, F15PHand the standard accessories are used as abase for the explanations and illustrations inthis manual. Therefore some items may not
apply to every model.
EMU25110
F9.92, T9.92, F15OWNER’S MANUAL
©2005 by Yamaha Motor Corporation, USA1st edition, April 2005
All rights reserved.Any reprinting or unauthorized usewithout the written permission ofYamaha Motor Corporation, USA
is expressly prohibited.Printed in Japan
P/N LIT-18626-06-72
Table of contents
General information .......................... 1
Identification numbers record.......... 1
Outboard motor serial number .......... 1Key number....................................... 1
Emission control information ........... 1
North American models..................... 1Star labels ......................................... 2
Safety information ........................... 3Important labels............................... 4
Warning labels .................................. 4Caution labels ................................... 5
Basic boating rules (Rules of the road) .............................................. 5
Steering and sailing rules and sound signals.................................. 5
Rules when encountering vessels .... 6Other special situations..................... 7
Fueling instructions ......................... 8
Gasoline............................................ 9Engine oil .......................................... 9
Battery requirement....................... 10
Battery specifications ...................... 10Without a rectifier or Rectifier
Regulator ...................................... 10
Propeller selection......................... 11Start-in-gear protection ................. 11
Basic components .......................... 12
Main components.......................... 12
Fuel tank ......................................... 13Fuel joint ......................................... 14Fuel gauge ...................................... 14Fuel tank cap .................................. 14Air vent screw ................................. 14Remote control................................ 14Remote control lever ....................... 14Neutral interlock trigger ................... 15Neutral throttle lever........................ 15Choke switch................................... 15Tiller handle .................................... 15Gear shift lever................................ 16Throttle grip ..................................... 16Throttle indicator ............................. 16Throttle friction adjuster................... 17Engine stop lanyard switch ............. 17Engine stop button .......................... 18
Choke knob for pull type .................18Manual starter handle .....................18Starter button ..................................19Main switch .....................................19Power tilt switch ..............................19Steering friction adjuster .................20Steering friction adjuster .................20Trim tab with anode.........................20Trim rod (tilt pin) ..............................21Tilt lock mechanism.........................21Tilt support knob..............................21Tilt support bar ................................21Power tilt unit...................................22Top cowling lock lever(s) (turn
type) ..............................................22Flushing device ...............................22Warning indicator ............................22
Warning system ............................ 23
Overheat warning............................23Low oil pressure warning ................23
Operation ......................................... 25
Installation..................................... 25
Mounting the outboard motor ..........25Clamping the outboard motor..........26
Breaking in engine ........................ 27
Procedure for 4-stroke models........27
Preoperation checks ..................... 27
Fuel .................................................27Controls...........................................27Engine .............................................28Checking the engine oil level ..........28
Filling fuel...................................... 28
Ring Free Fuel Additive...................28
Operating engine .......................... 29
Feeding fuel (portable tank) ............29Starting engine ................................30
Warming up engine....................... 35
Manual start and electric start models ..........................................35
Shifting.......................................... 35
Forward (tiller handle and remote control models) .............................36
Reverse (manual tilt and hydro tilt models) .........................................36
Stopping engine............................ 37
Table of contents
Procedure ....................................... 38
Trimming outboard motor.............. 38
Adjusting trim angle for manual tilt models .......................................... 39
Adjusting trim angle (power tilt models) ......................................... 39
Adjusting boat trim .......................... 40
Tilting up and down ....................... 41
Procedure for tilting up (manual tilt models) ......................................... 41
Procedure for tilting up.................... 42Procedure for tilting down (manual
tilt models) .................................... 44Procedure for tilting down ............... 44
Cruising in shallow water .............. 44
Cruising in shallow water (manual tilt models) .................................... 45
Power trim and tilt models / power tilt models...................................... 46
Cruising in other conditions........... 47
Maintenance..................................... 48
Specifications ................................ 48Transporting and storing outboard
motor ........................................... 51
Clamp screw mounting models ....... 51Storing outboard motor ................... 52Procedure ....................................... 52Lubrication (except oil injection
models) ......................................... 53Cleaning and anticorrosion
measures ...................................... 53Battery care..................................... 54Flushing power unit ......................... 54Cleaning the outboard motor .......... 55Checking painted surface of
motor............................................. 55
Periodic maintenance.................... 56
Replacement parts .......................... 56Maintenance chart .......................... 57Maintenance chart (additional)........ 58Greasing ......................................... 59Cleaning and adjusting spark
plug ............................................... 61Checking fuel system...................... 61Inspecting fuel filter ......................... 62
Cleaning fuel filter ...........................62Inspecting idling speed....................63Changing engine oil ........................63Checking wiring and connectors .....65Exhaust leakage..............................65Water leakage .................................65Engine oil leakage...........................65Checking power trim and tilt /
power tilt system ...........................66Checking propeller ..........................66Removing the propeller ...................67Installing the Propeller.....................68Changing gear oil ............................69Cleaning fuel tank ...........................70Inspecting and replacing
anode(s)........................................71Checking battery (for electric start
models) .........................................71Connecting the battery ....................72Disconnecting the battery................73Checking top cowling ......................73Coating the boat bottom..................73
Trouble Recovery............................ 74
Troubleshooting ............................ 74Temporary action in emergency ... 77
Impact damage ...............................77Replacing fuse ................................77Power trim and tilt / power tilt will
not operate....................................78Starter will not operate ....................78Emergency starting engine .............79
Treatment of submerged motor .... 80
Procedure........................................80
Consumer information ................... 81
Important warranty information for U.S.A. and Canada ..................... 81
YAMAHA MOTOR CORPORATION, U.S.A. FOUR-STROKE OUTBOARD MOTOR THREE-YEAR LIMITED WARRANTY ............................... 83
IMPORTANT WARRANTY INFORMATION IF YOU USE YOUR YAMAHA OUTSIDE THE
1
General information
EMU25170
Identification numbers record
EMU25182
Outboard motor serial number
The outboard motor serial number isstamped on the label attached to the portside of the clamp bracket or the upper part ofthe swivel bracket.Record your outboard motor serial number inthe spaces provided to assist you in orderingspare parts from your Yamaha dealer or forreference in case your outboard motor is sto-len.
EMU25190
Key number
If a main key switch is equipped with the mo-tor, the key identification number is stampedon your key as shown in the illustration.Record this number in the space provided forreference in case you need a new key.
EMU25221
Emission control information
EMU25230
North American models
This engine conforms to U.S. EnvironmentalProtection Agency (EPA) regulations for ma-rine SI engines. See the label affixed to yourengine for details.
EMU25242
Approval label of emission control certif-icate
This label is attached to the bottom cowling.New Technology; (4-stroke/HPDI) EM
1. Outboard motor serial number location
1. Key number
1. Approval label location
1
ZMU04948
General information
2
EMU25262
Manufactured date label
This label is attached to the clamp bracket orthe swivel bracket.
EMU25272
Star labels
Your outboard motor is labeled with a Cali-fornia Air Resources Board (CARB) star la-bel. See below for a description of your
particular label.
EMU25280
One Star—Low Emission
The one-star label identifies engines thatmeet the Air Resources Board’s 2001 ex-haust emission standards. Engines meetingthese standards have 75% lower emissionsthan conventional carbureted two-stroke en-gines. These engines are equivalent to theU.S. EPA’s 2006 standards for marine en-gines.
EMU25290
Two Stars—Very Low Emission
The two-star label identifies engines thatmeet the Air Resources Board’s 2004 ex-haust emission standards. Engines meetingthese standards have 20% lower emissionsthan One Star-Low-Emission engines.
1. Manufactured date label location
ZMU05159
1 ZMU04924
1. Star labels location
1
ZMU04949
ZMU01702
General information
3
EMU25300
Three Stars—Ultra Low Emission
The three-star label identifies engines thatmeet the Air Resources Board’s 2008 ex-haust emission standards. Engines meetingthese standards have 65% lower emissionsthan One Star-Low-Emission engines.
EMU25362
Safety information
�
Before mounting or operating the outboardmotor, read this entire manual. Reading itshould give you an understanding of themotor and its operation.
�
Before operating the boat, read any own-er’s or operator’s manuals supplied with itand all labels. Be sure you understandeach item before operating.
�
Do not overpower the boat with this out-board motor. Overpowering the boat couldresult in loss of control. The rated power of
the outboard should be equal to or lessthan the rated horsepower capacity of theboat. If the rated horsepower capacity ofthe boat is unknown, consult the dealer orboat manufacturer.
�
Do not modify the outboard. Modificationscould make the motor unfit or unsafe touse.
�
Incorrect propeller selection and incorrectuse may not only cause engine damage,but also adversely affect fuel consumption.Consult your dealer for correct use.
�
Never operate after drinking alcohol or tak-ing drugs. About 50% of all boating fatali-ties involve intoxication.
�
Have an approved personal flotation de-vice (PFD) on board for every occupant. Itis a good idea to wear a PFD wheneverboating. At a minimum, children and non-swimmers should always wear PFDs, andeveryone should wear PFDs when thereare potentially hazardous boating condi-tions.
�
Gasoline is highly flammable, and its va-pors are flammable and explosive. Handleand store gasoline carefully. Make surethere are no gas fumes or leaking fuel be-fore starting the engine.
�
This product emits exhaust gases whichcontain carbon monoxide, a colorless,odorless gas which may cause brain dam-age or death when inhaled. Symptoms in-clude nausea, dizziness, and drowsiness.Keep cockpit and cabin areas well ventilat-ed. Avoid blocking exhaust outlets.
�
Check throttle, shift, and steering for prop-er operation before starting the engine.
�
Attach the engine stop switch lanyard cordto a secure place on your clothing, or yourarm or leg while operating. If you acciden-tally leave the helm, the cord will pull from
ZMU01703
ZMU01704
General information
4
the switch, stopping the engine.
�
Know the marine laws and regulationswhere you will be boating—and obeythem. For basic boating rules, see “Rulesof the road” on page 5.
�
Stay informed about the weather. Checkweather forecasts before boating. Avoidboating in hazardous weather.
�
Tell someone where you are going: leavea Float Plan with a responsible person. Besure to cancel the Float Plan when you re-turn.
�
Use common sense and good judgmentwhen boating. Know your abilities, and besure you understand how your boat han-dles under the different boating conditionsyou may encounter. Operate within yourlimits, and the limits of your boat. Alwaysoperate at safe speeds, and keep a carefulwatch for obstacles and other traffic.
�
Always watch carefully for swimmers dur-ing the engine operation.
�
Stay away from swimming areas.
�
When a swimmer is in the water near youshift into neutral and shut off the engine.
�
Do not illegally discard empty containersused to replace or replenish oil. For thecorrect processing of empty containers,consult the dealer where you purchasedthe oil.
�
When replacing oils used to lubricate theproduct (engine or gear oil), be sure towipe away any spilt oil. Never pour oil with-out using a funnel or similar device. If nec-essary, verify the necessary replacementprocedure with the dealer.
�
Never illegally discard (dump) the product.Yamaha recommends consulting the deal-er on discarding the product.
Be informed about boating safety. Additionalpublications and information can be obtained
from many organizations, including the fol-lowing:
United States Coast Guard
Consumer Affairs Staff (G-BC) Office of Boating, Public, and Consumer Af-fairs U.S. Coast Guard Headquarters Washington, D.C. 20593-0001 Boating Safety Hotline: 1-800-368-5647
National Marine Manufacturers Associa-tion (NMMA)
401 N. Michigan Ave. Chicago, Il 60611
Marine Retailers Association of America
155 N. Michigan Ave. Chicago, Il 60601
EMU25382
Important labels
EMU25395
Warning labels
EMU25401
Label
WARNING
EWM01260
�
Be sure shift control is in neutral beforestarting engine. (except 2HP)
�
Do not touch or remove electrical partswhen starting or during operation.
�
Keep hands, hair, and clothes awayfrom flywheel and other rotating parts
while engine is running.
ZMU04950
General information
5
EMU25431
Label
WARNING
EWM01300
�
This engine is equipped with a neutralstarting device.
�
The engine will not start unless the shift
control is in neutral position.
EMU25465
Caution labels
EMU25472
Label
CAUTION:
ECM01190
Transport and store the engine only asshown. Otherwise, engine damage could
result from Leaking oil.
EMU25500
Basic boating rules (Rules of the road)
Just as there are rules which apply when youare driving on streets and high ways, thereare waterway rules which apply when youare driving your boat. These rules are usedinternationally, and are also enforced by theUnited States Coast Guard and local agen-cies. You should be aware of these rules,and follow them whenever you encounteranother vessel on the water.Several sets of rules prevail according togeographic location, but are all basically the
same as the International Rules of the Road.The rules presented here in your Owner’sManual are condensed, and have been pro-vided for your convenience only. Consultyour local U.S. Coast Guard Auxiliary or De-partment of Motor Vehicles for a completeset of rules governing the waters in whichyou will be using your boat.
EMU25510
Steering and sailing rules and sound signals
Whenever two vessels on the water meetone another, one vessel has the right-of-way; it is called the “stand-on” vessel. Thevessel which does not have the right-of-wayis called the “give-way” or “burdened” vessel.These rules determine which vessel has theright-of-way, and what each vessel shoulddo.
Stand-on vessel
The vessel with the right-of-way has the dutyto continue its course and speed, except toavoid an immediate collision. When youmaintain your direction and speed, the othervessel will be able to determine how best toavoid you.
Give-way vessel
The vessel which does not have the right-of-way has the duty to take positive and timelyaction to stay out of the way of the Stand-Onvessel. Normally, you should not cross infront of the vessel with the right-of-way. Youshould slow down or change directions brief-ly and pass behind the other vessel. Youshould always move in such a way that theoperator of the other vessel can see whatyou are doing.
“The general prudential rule”
This rule is called Rule 2 in the InternationalRules and says,“In obeying and construing these rules dueregard shall be had to all dangers of naviga-
ZMU01987
General information
6
tion and collision, and to any special circum-stances, which may render a departure fromthe above rules necessary in order to avoidimmediate danger.”In other words, follow the standard rules ex-cept when a collision will occur unless bothvessels try to avoid each other. If that is thecase, both vessels become “Give-Way” ves-sels.
EMU25520
Rules when encountering vessels
There are three main situations which youmay encounter with other vessels whichcould lead to a collision unless the SteeringRules are followed:
Meeting:
(you are approaching another ves-sel head-on)
Crossing:
(you are traveling across the oth-er vessel’s path)
Overtaking:
(you are passing or beingpassed by another vessel)In the following illustration, your boat is in thecenter. You should give the right-of-way toany vessels shown in white area (you are theGive-Way vessel). Any vessels in the shad-ed area must yield to you (they are the Give-Way vessels). Both you and the meetingvessel must alter course to avoid each other.
Meeting
If you are meeting another power vesselhead on, and are close enough to run the risk
of collision, neither of you has the right-of-way! Both of you should alter course to avoidan accident. You should keep the other ves-sel on your port (left) side. This rule doesn’tapply if both of you will clear one another ifyou continue on your set course and speed.
Crossing
When two power driven vessels are crossingeach other’s path close enough to run therisk of collision, the vessel which has the oth-er on the starboard (right) side must keep outof the way of the other. If the other vessel ison your right, you must keep out of its way;you are the Give-Way vessel. If the othervessel is on your port (left) side, rememberthat you should maintain course and direc-tion, provided the other vessel gives you theright-of-way as it should.
Overtaking
If you are passing another vessel, you arethe “Give-Way” vessel. This means that the
General information
7
other vessel is expected to maintain itscourse and speed. You must stay out of itsway until you are clear of it. Likewise, if an-other vessel is passing you, you shouldmaintain your speed and direction so that theother vessel can steer itself around you.
EMU25530
Other special situations
There are three other rules you should beaware of when driving your boat around oth-er vessels.
Narrow channels and bends
When navigating in narrow channels, youshould keep to the right when it is safe andpractical to do so. If the operator of a power-driven vessel is preparing to go around abend that may obstruct the view of other wa-ter vessels, the operator should sound a pro-longed blast on the whistle (4 to 6 seconds).If another vessel is around the bend, it tooshould sound the whistle. Even if no reply isheard, however, the vessel should still pro-ceed around the bend with caution. If younavigate such waters with your boat, you willneed to carry a portable air horn, availablefrom local marine supply stores.
Fishing vessel right-of-way
All vessels which are fishing with nets, linesor trawls are considered to be “fishing ves-sels” under the International Rules. Vesselswith trolling lines are not considered fishingvessels. Fishing vessels have the right-of-way regardless of position. Fishing vesselscannot, however, impede the passage ofother vessels in narrow channels.
Sailing vessel right-of-way
Sailing vessels should normally be given theright-of-way. The exceptions to this are:1. When the sailing vessel is overtaking
the power-driven vessel, the power-driv-en vessel has the right-of-way.
2. Sailing vessels should keep clear of any
fishing vessel.3. In a narrow channel, a sailing vessel
should not hamper the safe passage ofa power-driven vessel which can navi-gate only in such a channel.
Reading buoys and other markers
The waters of the United states are markedfor safe navigation by the lateral system ofbuoyage. Simply put, buoys and markershave an arrangement of shapes, colors,numbers and lights to show which side of thebuoy a boater should pass on when navigat-ing in a particular direction. The markings onthese buoys are oriented from the perspec-tive of being entered from seaward (the boat-er is going towards the port). This means thatred buoys are passed on the starboard(right) side when proceeding from open wa-ter into port, and black buoys are to port (left)side. When navigating out of port, your posi-tion with respect to the buoys should be re-versed; red buoys should be to port andblack buoys to starboard.Many bodies of water used by boaters areentirely within the boundaries of a particularstate. The Uniform State Waterway MarkingSystem has been devised for these waters.This system uses buoys and signs with dis-tinctive shapes and colors to show regulato-ry or advisory information. These markersare white with black letters and orangeboarders. They signify speed zones, restrict-ed areas, danger areas, and general infor-mation.Remember, markings may vary by geo-graphic location. Always consult local boat-ing authorities before driving your boat inunfamiliar waters.
General information
8
EMU25540
Fueling instructions
WARNING
EWM00010
GASOLINE AND ITS VAPORS ARE HIGH-LY FLAMMABLE AND EXPLOSIVE!
�
Do not smoke when refueling, and keep
away from sparks, flames, or othersources of ignition.
�
Stop engine before refueling.
�
Refuel in a well-ventilated area. Refuelportable fuel tanks off the boat.
�
Take care not to spill gasoline. If gaso-line spills, wipe it up immediately with
ZMU01708
General information
9
dry rags.
�
Do not overfill the fuel tank.
�
Tighten the filler cap securely after re-fueling.
�
If you should swallow some gasoline,inhale a lot of gasoline vapor, or getgasoline in your eyes, get immediatemedical attention.
�
If any gasoline spills onto your skin, im-mediately wash with soap and water.Change clothing if gasoline spills on it.
�
Touch the fuel nozzle to the filler open-ing or funnel to help prevent electro-
static sparks.
CAUTION:
ECM00010
Use only new clean gasoline which hasbeen stored in clean containers and is notcontaminated with water or foreign mat-
ter.
EMU25570
Gasoline
If knocking or pinging occurs, use a differentbrand of gasoline or premium unleaded fuel.
Gasohol
There are two types of gasohol: gasohol con-taining ethanol and that containing metha-nol. Gasohol containing ethanol can be usedif ethanol content does not exceed 10% andthe fuel meets minimum octane ratings.Yamaha does not recommended gasoholcontaining methanol because it can causefuel system damage or engine performanceproblems.
EMU25683
Engine oil
NOTE:
If the recommended engine oil grades arenot available, select an alternative from thefollowing chart according to the average
temperatures in your area.
CAUTION:
ECM01050
All 4-stroke engines are shipped from the
factory without engine oil.
Recommended gasoline:Regular unleaded gasoline with a min-imum octane rating of 86 (Pump Oc-tane Number) = (R+M)/2
Recommended engine oil:4-stroke motor oil with a combination of the following SAE and API oil classi-fications
Engine oil type SAE:10W-30 or 10W-40
Engine oil grade API:SE, SF, SG, SH, SJ, SL
Engine oil quantity (excluding oil filter):1.0 L (1.06 US qt) (0.88 Imp.qt)
General information
10
EMU25690
Battery requirement
CAUTION:
ECM01060
Do not use a battery that does not meetthe specified capacity. If a battery whichdoes not meet specifications is used, theelectric system could perform poorly orbe overloaded, causing electric system
damage.
For electric start models, choose a batterywhich meets the following specifications.
EMU25711
Battery specifications
EMU25730
Without a rectifier or Rectifier Regulator
CAUTION:
ECM01090
A battery cannot be connected to modelsthat do not have a rectifier or Rectifier
Regulator.
If you wish to use a battery with the modelswithout a rectifier or Rectifier Regulator, in-stall an optional Rectifier Regulator.Using a maintenance-free battery with theabove models can shorten the life of the bat-tery significantly.Install an optional Rectifier Regulator or use
ZMU01710
Minimum cold cranking amps (CCA/SAE):
F15EH 245.0 AF15PH 245.0 AF15PR 245.0 AF9.9ER2 245.0 AT9.9EH2 245.0 AT9.9ER2 245.0 A
Minimum marine cranking amps (MCA/ABYC):
F15EH 323.0 AF15PH 323.0 AF15PR 323.0 AF9.9ER2 323.0 AT9.9EH2 323.0 AT9.9ER2 323.0 A
Minimum reserve capacity (RC/SAE):F15EH 52 minutesF15PH 52 minutesF15PR 52 minutesF9.9ER2 52 minutesT9.9EH2 52 minutesT9.9ER2 52 minutes
General information
11
accessories rated to withstand 18 volts orhigher with the above models. Consult yourYamaha dealer for details on installing anoptional Rectifier Regulator.
EMU25742
Propeller selection
The performance of your outboard motor willbe critically affected by your choice of propel-ler, as an incorrect choice could adverselyaffect performance and could also seriouslydamage the motor. Engine speed dependson the propeller size and boat load. If enginespeed is too high or too low for good engineperformance, this will have an adverse effecton the engine.Yamaha outboard motors are fitted with pro-pellers chosen to perform well over a rangeof applications, but there may be uses wherea propeller with a different pitch would bemore appropriate. For a greater operatingload, a smaller-pitch propeller is more suit-able as it enables the correct engine speedto be maintained. Conversely, a larger-pitchpropeller is more suitable for a smaller oper-ating load.Yamaha dealers stock a range of propellers,and can advise you and install a propeller onyour outboard that is best suited to your ap-plication.
NOTE:
Select a propeller which will allow the engineto reach the middle or upper half of the oper-ating range at full throttle with the maximumboat load. If operating conditions such aslight boat loads then allow the engine r/min torise above the maximum recommendedrange, reduce the throttle setting to maintain
the engine in the proper operating range.
For instructions on propeller removal and in-stallation, see page 66.
EMU25770
Start-in-gear protection
Yamaha outboard motors or Yamaha-ap-proved remote control units are equippedwith start-in-gear protection device(s). Thisfeature permits the engine to be started onlywhen it is in neutral. Always select neutralbefore starting the engine.
1. Propeller diameter in inches2. Propeller pitch in inches
ZMU04605
-x1 2 3
3. Type of propeller (propeller mark)
12
Basic components
EMU25796
Main componentsNOTE:
* May not be exactly as shown; also may not be included as standard equipment on all mod-
els.
F9.9MH, F9.9ER, F15MH, F15EH, F15PR, F15PH
23
1
2
4
87
6
9
10
3
5
25
18
12
14 15
16
13
1719
20
2122
10
11
24
ZMU04951
20
1. Top cowling2. Top cowling lock lever(s)3. Drain screw4. Anti-cavitation plate5. Propeller*6. Cooling water inlet7. Trim rod*8. Clamp bracket9. Steering friction screw10. Power tilt switch*11. Manual starter handle*12. Choke knob13. Warning indicator(s)14. Gear shift lever*
15. Tiller handle*16. Engine stop button/Engine stop lanyard switch*17. Transom clamp handle18. Rope attachment19. Tilt lock lever*20. Flushing device21. Starter button*22. Throttle friction adjuster*23. Tilt support knob*24. Remote control box (side mount type)*25. Fuel tank*
Basic components
13
T9.9ER, T9.9EH
EMU25802
Fuel tank
If your model was equipped with a portablefuel tank, its function is as follows.
WARNING
EWM00020
The fuel tank supplied with this engine isits dedicated fuel reservoir and must notbe used as a fuel storage container. Com-mercial users should conform to relevantlicensing or approval authority regula-
1
2
3
45
6
10
98
7
13
11
18
12
17
16 15
14
1920
21
22
ZMU05129
1. Top cowling2. Top cowling lock lever(s)3. Drain screw4. Anti-cavitation plate5. Propeller*6. Cooling water inlet7. Trim rod8. Steering friction screw9. Clamp bracket10. Tiller handle*11. Choke knob12. Manual starter handle*13. Warning indicator14. Gear shift lever*15. Throttle friction adjuster*16. Engine stop button/Engine stop lanyard switch*17. Transom clamp handle
18. Rope attachment19. Tilt lock lever*20. Flushing device21. Remote control box (side mount type)*22. Fuel tank*
Basic components
14
tions.
EMU25830
Fuel joint
This joint is used to connect the fuel line.
EMU25841
Fuel gauge
This gauge is located on either the fuel tankcap or on the fuel joint base. It shows the ap-proximate amount of fuel remaining in thetank.
EMU25850
Fuel tank cap
This cap seals the fuel tank. When removed,the tank can be filled with fuel. To remove thecap, turn it counterclockwise.
EMU25860
Air vent screw
This screw is on the fuel tank cap. To loosenthe screw, turn it counterclockwise.
EMU26180
Remote control
The remote control lever actuates both theshifter and the throttle. The electrical switch-es are mounted on the remote control box.
EMU26190
Remote control lever
Moving the lever forward from the neutral po-sition engages forward gear. Pulling the le-ver back from neutral engages reverse. Theengine will continue to run at idle until the le-ver is moved about 35° (a detent can be felt).Moving the lever farther opens the throttle,and the engine will begin to accelerate.
1. Fuel joint2. Fuel gauge3. Fuel tank cap4. Air vent screw
1. Power trim and tilt switch2. Remote control lever3. Neutral interlock trigger4. Neutral throttle lever5. Main switch / choke switch6. Engine stop lanyard switch7. Throttle friction adjuster
1. Neutral “ ”
2. Forward “ ”
3. Reverse “ ”4. Shift5. Fully closed
Basic components
15
EMU26201
Neutral interlock trigger
To shift out of neutral, first pull the neutral in-terlock trigger up.
EMU26211
Neutral throttle lever
To open the throttle without shifting into ei-ther forward or reverse, put the remote con-trol lever in the neutral position and lift theneutral throttle lever.
NOTE:
The neutral throttle lever will operate onlywhen the remote control lever is in neutral.The remote control lever will operate onlywhen the neutral throttle lever is in the closed
position.
EMU26221
Choke switch
To activate the choke system, press in themain switch while the key is turned to the“ ” (on) or “ ” (start) position. Thechoke system will then supply the rich fuelmixture required to start the engine. Whenthe key is released, the choke will switch offautomatically.
EMU25911
Tiller handle
To change direction, move the tiller handle tothe left or right as necessary.
6. Throttle7. Fully open
1. Neutral interlock trigger
1. Fully open2. Fully closed
ZMU03160
Basic components
16
EMU25922
Gear shift lever
Pulling the gear shift lever towards you putsthe engine in forward gear so that the boatmoves ahead. Pushing the lever away fromyou puts the engine in reverse gear so thatthe boat moves astern.
EMU25941
Throttle grip
The throttle grip is on the tiller handle. Turnthe grip counterclockwise to increase speedand clockwise to decrease speed.
EMU25961
Throttle indicator
The fuel consumption curve on the throttleindicator shows the relative amount of fuelconsumed for each throttle position. Choosethe setting that offers the best performanceand fuel economy for the desired operation.
1. Forward “ ”
2. Neutral “ ”
3. Reverse “ ”
ZMU01997
ZMU04879
ZMU01998
2
1
3 2NR
F
1. Forward “ ”
2. Neutral “ ”
3. Reverse “ ”
ZMU04878
231
NRF
ZMU01999
Basic components
17
EMU25970
Throttle friction adjuster
A friction device provides adjustable resis-tance to movement of the throttle grip or theremote control lever, and can be set accord-ing to operator preference.To increase resistance, turn the adjusterclockwise. To decrease resistance, turn theadjuster counterclockwise.
WARNING
EWM00030
Do not overtighten the friction adjuster. Ifthere is too much resistance, it could bedifficult to move throttle lever or grip,
which could result in an accident.
When constant speed is desired, tighten theadjuster to maintain the desired throttle set-ting.
EMU25990
Engine stop lanyard switch
The lock plate must be attached to the en-gine stop switch for the engine to run. Thelanyard should be attached to a secure placeon the operator’s clothing, or arm or leg.Should the operator fall overboard or leavethe helm, the lanyard will pull out the lockplate, stopping ignition to the engine. Thiswill prevent the boat from running away un-der power.
WARNING
EWM00120
�
Attach the engine stop switch lanyardto a secure place on your clothing, oryour arm or leg while operating.
�
Do not attach the lanyard to clothingthat could tear loose. Do not route thelanyard where it could become entan-gled, preventing it from functioning.
�
Avoid accidentally pulling the lanyardduring normal operation. Loss of en-gine power means the loss of moststeering control. Also, without enginepower, the boat could slow rapidly. Thiscould cause people and objects in the
boat to be thrown forward.
1. Throttle indicator
ZMU02000
1
ZMU02001
Basic components
18
NOTE:
The engine cannot be started with the lock
plate removed.
EMU26001
Engine stop button
To open the ignition circuit and stop the en-gine, push this button.
EMU26011
Choke knob for pull type
To supply the engine with the rich fuel mix-ture required to start, pull out this knob.
EMU26070
Manual starter handle
To start the engine, first gently pull the han-dle out until resistance is felt. From that posi-tion, then pull the handle straight out quicklyto crank the engine.
1. Lanyard2. Lock plate
1. Lanyard2. Lock plate
2
1ZMU02003
ZMU02083
ZMU02355
ZMU02005
Basic components
19
EMU26080
Starter button
To start the engine with the electric starter,push the starter button.
EMU26090
Main switch
The main switch controls the ignition system;its operation is described below.
�
“ ”
(off)
With the main switch in the “ ” (off) posi-tion, the electrical circuits are off, and the keycan be removed.
�
“ ”
(on)
With the main switch in the “ ” (on) posi-tion, the electrical circuits are on, and the keycannot be removed.
�
“ ”
(start)
With the main switch in the “ ” (start) po-sition, the starter motor turns to start the en-gine. When the key is released, it returnsautomatically to the “ ” (on) position.
EMU26102
Power tilt switch
The power tilt system adjusts the outboardmotor angle in relation to the transom. Push-ing the switch “ ” (up) tilts the outboard mo-tor up. Pressing the switch “ ” (down) tiltsthe outboard motor down. When the switch isreleased, the outboard motor will stop in itscurrent position.
NOTE:
For instructions on using the power tilt
ZMU04880
ZMU02811
UP
DN
DN UPZMU04899
Basic components
20
switch, see pages 38 and 41.
EMU26110
Steering friction adjuster
A friction device provides adjustable resis-tance to the steering mechanism, and can beset according to operator preference. An ad-juster lever is located on the bottom of thetiller handle bracket.To increase resistance, turn the lever to theleft.To decrease resistance, turn the lever to theright.
WARNING
EWM00040
Do not overtighten the friction adjuster. Ifthere is too much resistance, it could bedifficult to steer, which could result in an
accident.
EMU26122
Steering friction adjuster
A friction device provides adjustable resis-tance to the steering mechanism, and can beset according to operator preference. An ad-justing screw or bolt is located on the swivelbracket.
To increase resistance, turn the adjusterclockwise.To decrease resistance, turn the adjustercounterclockwise.
WARNING
EWM00040
Do not overtighten the friction adjuster. Ifthere is too much resistance, it could bedifficult to steer, which could result in an
accident.
EMU26241
Trim tab with anode
The trim tab should be adjusted so that thesteering control can be turned to either theright or left by applying the same amount offorce.
WARNING
EWM00840
An improperly adjusted trim tab couldcause difficult steering. Always test runafter the trim tab has been installed or re-placed to be sure steering is correct. Besure you have tightened the bolt after ad-
justing the trim tab.
If the boat tends to veer the left (port side),turn the trim tab rear end to the port side “A”in the figure. If the boat tends to veer the right(starboard side), turn the trim tab end to the
ZMU02340
ZMU02080
Basic components
21
starboard side “B” in the figure.
CAUTION:
ECM00840
The trim tab also serves as an anode toprotect the engine from electrochemicalcorrosion. Never paint the trim tab as it
will become ineffective as an anode.
EMU26261
Trim rod (tilt pin)
The position of the trim rod determines theminimum trim angle of the outboard motor inrelation to the transom.
EMU26312
Tilt lock mechanism
The tilt lock mechanism is used to preventthe outboard motor from lifting out of the wa-ter when in reverse gear.
To lock it, set the tilt lock lever in the “ ”(lock) position. To release, push the tilt locklever in the “ ” (release) position.
EMU26320
Tilt support knob
To keep the outboard motor in the tilted upposition, push the tilt support knob under theswivel bracket.
EMU26330
Tilt support bar
The tilt support bar keeps the outboard motorin the tilted up position.
1. Trim tab2. Bolt
A
B
ZMU03097
1
2
ZMU02007
1. Tilt lock lever
ZMU02008
1
ZMU04884
Basic components
22
EMU26360
Power tilt unit
This unit tilts the outboard motor up anddown and is controlled with the power tiltswitch.
CAUTION:
ECM00630
Do not step on or exert pressure on thepower tilt motor. The power tilt unit could
be damaged as a result.
EMU26372
Top cowling lock lever(s) (turn type)
To remove the engine top cowling, turn thelock lever(s) and lift off the cowling. When in-stalling the cowling, check to be sure it fitsproperly in the rubber seal. Then lock thecowling again by returning the lever(s) to thelock position.
EMU26460
Flushing device
This device is used to clean the cooling wa-ter passages of the motor using a gardenhose and tap water.
NOTE:
For details on usage, see page 54.
EMU26300
Warning indicator
If the engine develops a condition which iscause for warning, the indicator lights up. Fordetails on how to read the warning indicator,see page 23.
1. Power tilt unit2. Power tilt motor
ZMU02078
1. Top cowling lock lever(s)
1. Flushing device
ZMU02009
1
1
ZMU04885
Basic components
23
EMU26801
Warning system
CAUTION:
ECM00090
Do not continue to operate the engine if awarning device has activated. Consultyour Yamaha dealer if the problem can-
not be located and corrected.
EMU26813
Overheat warning
This engine has an overheat warning device.If the engine temperature rises too high, thewarning device will activate.
Activation of warning device
�
The engine speed will automatically de-crease to about 2000 r/min.
�
The overheat warning indicator will light (ifequipped on the bottom cowling or the ta-chometer).
�
The buzzer will sound (if equipped on thetiller handle, remote control box, or mainswitch panel).
If the warning system has activated, stop theengine and check the cooling water inlet forclogging.
EMU30164
Low oil pressure warning
If the oil pressure drops too low, the warningdevice will activate.Activation of warning device
�
The engine speed will automatically de-crease to about 2000 r/min.
�
The low oil pressure warning indicator willlight.
ZMU02010
ZMU03026
Basic components
24
�
The buzzer will sound (if equipped on thetiller handle, remote control box, or mainswitch panel).
If the warning system has activated, stop theengine as soon as it is safe to do so. Checkthe oil level and add oil as needed. If the oillevel is correct and the warning device doesnot switch off, consult your Yamaha dealer.
CAUTION:
ECM00100
Do not continue to run the engine if thelow oil pressure warning indicator is on.
Serious engine damage could occur.
ZMU02081
ZMU02360
25
Operation
EMU26901
Installation
CAUTION:
ECM00110
Incorrect engine height or obstructionsto smooth water flow (such as the designor condition of the boat, or accessoriessuch as transom ladders or depth findertransducers) can create airborne waterspray while the boat is cruising. Severeengine damage may result if the motor isoperated continuously in the presence of
airborne water spray.
NOTE:
During water testing check the buoyancy ofthe boat, at rest, with its maximum load.Check that the static water level on the ex-haust housing is low enough to prevent wa-ter entry into the powerhead, when waterrises due to waves when the outboard is not
running.
EMU26910
Mounting the outboard motor
WARNING
EWM00820
�
Overpowering a boat could cause se-vere instability. Do not install an out-board motor with more horsepowerthan the maximum rating on the capac-ity plate of the boat. If the boat does nothave a capacity plate, consult the boatmanufacturer.
�
The information presented in this sec-tion is intended as reference only. It isnot possible to provide complete in-structions for every possible boat andmotor combination. Proper mountingdepends in part on experience and the
specific boat and motor combination.
WARNING
EWM00830
Improper mounting of the outboard mo-tor could result in hazardous conditionssuch as poor handling, loss of control, orfire hazards. Observe the following:
�
For permanently mounted models, yourdealer or other person experienced inproper rigging should mount the motor.If you are mounting the motor yourself,you should be trained by an experi-enced person.
�
For portable models, your dealer or oth-er person experienced in proper out-board motor mounting should show
you how to mount your motor.
Mount the outboard motor on the center line(keel line) of the boat, and ensure that theboat itself is well balanced. Otherwise theboat will be hard to steer. For boats withouta keel or which are asymmetrical, consultyour dealer.
EMU26920
Mounting height
To run your boat at optimum efficiency, thewater resistance (drag) of the boat and out-board motor must be made as little as possi-ble. The mounting height of the outboard
1. Center line (keel line)
ZMU017601
Operation
26
motor greatly affects the water resistance. Ifthe mounting height is too high, cavitationtends to occur, thus reducing the propulsion;and if the propeller tips cut the air, the enginespeed will rise abnormally and cause the en-gine to overheat. If the mounting height is toolow, the water resistance will increase andthereby reduce engine efficiency. Mount theoutboard motor so that the anti-cavitationplate is between the bottom of the boat anda level 25 mm (1 in.) below it.
NOTE:
�
The optimum mounting height of the out-board motor is affected by the boat andmotor combination and the desired use.Test runs at different heights can help de-termine the optimum mounting height.Consult your Yamaha dealer or boat man-ufacturer for further information on deter-mining the proper mounting height.
�
For instructions on setting the trim angle of
the outboard motor, see page 38.
EMU26970
Clamping the outboard motor
1. Place the outboard motor on the tran-som so that it is positioned as close tothe center as possible. Tighten the tran-som clamp screws evenly and securely.Occasionally check the clamp screwsfor tightness during operation of the out-board motor because they could be-
come loose due to engine vibration.
WARNING
EWM00640
Loose clamp screws could allow the out-board motor to fall off or move on thetransom. This could cause loss of controland serious injury. Make sure the tran-som screws are tightened securely. Oc-casionally check the screws for tightness
during operation.
2. If the engine restraint cable attachmentis equipped on your engine, an enginerestraint cable or chain should be used.Attach one end to the engine restraintcable attachment and the other to a se-cure mounting point on the boat. Other-wise the engine could be completely lostif it accidentally falls off the transom.
3. Secure the clamp bracket to the transomusing the bolts provided with the out-
ZMU02011
0–25mm(0–1in.)
ZMU02012
ZMU02013
Operation
27
board (if packed). For details, consultyour Yamaha dealer.
WARNING
EWM00650
Avoid using bolts, nuts or washers otherthan those contained in the engine pack-aging. If used, they must be of at least thesame quality of material and strength andmust be tightened securely. After tighten-ing, test run the engine and check their
tightness.
EMU30172
Breaking in engine
Your new engine requires a period of break-in to allow mating surfaces of moving parts towear in evenly. Correct break-in will help en-sure proper performance and longer enginelife.
CAUTION:
ECM00800
Failure to follow the break-in procedurecould result in reduced engine life or
even severe engine damage.
EMU27080
Procedure for 4-stroke models
Run the engine under load (in gear with apropeller installed) as follows.1. For the first hour of operation:
Run the engine at 2000 r/min or at ap-proximately half throttle.
2. For the second hour of operation:Run the engine at 3000 r/min or at ap-proximately three-quarter throttle.
3. For the next eight hours of operation:Avoid continuous operation at full throt-tle for more than five minutes at a time.
4. After the first 10 hours:Operate the engine normally.
EMU27101
Preoperation checks
WARNING
EWM00080
If any item in the preoperation check isnot working properly, have it inspectedand repaired before operating the out-board motor. Otherwise an accident
could occur.
CAUTION:
ECM00120
Do not start the engine out of water. Over-heating and serious engine damage can
occur.
EMU27110
Fuel
�
Check to be sure you have plenty of fuelfor your trip.
�
Make sure there are no fuel leaks or gaso-line fumes.
�
Check fuel line connections to be sure theyare tight (if equipped Yamaha fuel tank orboat tank).
�
Be sure the fuel tank is positioned on a se-cure, flat surface, and that the fuel line isnot twisted or flattened, or likely to contactsharp objects (if equipped Yamaha fueltank or boat tank).
EMU27130
Controls
�
Check throttle, shift, and steering for prop-
1. Bolts
ZMU02631
1
Operation
28
er operation before starting the engine.
�
The controls should work smoothly, with-out binding or unusual free play.
�
Look for loose or damaged connections.
�
Check operation of the starter and stopswitches when the outboard motor is in thewater.
EMU27140
Engine
�
Check the engine and engine mounting.
�
Look for loose or damaged fasteners.
�
Check the propeller for damage.
EMU27163
Checking the engine oil level
1. Put the outboard motor in an upright po-sition (not tilted).
2. Remove oil dipstick and wipe it clean.3. Completely insert the dipstick and re-
move it again.4. Check the oil level using the dipstick to
be sure the level falls between the upperand lower marks. Fill with oil if it is belowthe lower mark, or drain to the specifiedlevel if it is above the upper mark.
NOTE:
Be sure to completely insert the dipstick into
the dipstick guide.
EMU30021
Filling fuel
WARNING
EWM00060
Gasoline and its vapors are highly flam-mable and explosive. Keep away fromsparks, cigarettes, flames, or other
sources of ignition.
1. Remove the fuel tank cap.2. Carefully fill the fuel tank.3. Securely close the cap after filling the
tank. Wipe up any spilled fuel.
EMU27270
Ring Free Fuel Additive
Gasoline is a precise blend of many differentsubstances, each chosen to give certaincharacteristics. Gasoline blends have beenchanging in recent years in response to con-cerns about pollution and resulting emis-sions regulations. One of the most obviouschanges has been the elimination of leadfrom most fuels.As gasoline has changed, the amount of ad-ditives such as aromatics and oxygenateshas increased. These additives are impor-tant for the engines in passenger cars, butthey can have detrimental effects in marineengines, because of increased deposits inthe combustion chamber. When enough de-posits collect, piston rings begin sticking.Performance drops and engine wear in-creases dramatically.While many additives available may reducedeposits, Yamaha recommends the use of
Ring Free Fuel Additive
, available fromyour Yamaha dealer.
Ring Free Fuel Addi-tive
has repeatedly proven its ability to cleancombustion deposits from inside the engine,notably the critical piston-ring-land area, andfuel system components. Follow product la-beling for use instructions.
1. Lower level mark2. Oil dipstick3. Upper level mark
ZMU02082
13
2
Operation
29
EMU27450
Operating engine
EMU27461
Feeding fuel (portable tank)
WARNING
EWM00420
�
Before starting the engine, make surethat the boat is tightly moored and thatyou can steer clear of any obstructions.Be sure there are no swimmers in thewater near you.
�
When the air vent screw is loosened,gasoline vapor will be released. Gaso-line is highly flammable, and its vaporsare flammable and explosive. Refrainfrom smoking, and keep away fromopen flames and sparks while loosen-ing the air vent screw.
�
This product emits exhaust gaseswhich contain carbon monoxide, a col-orless, odorless gas which could causebrain damage or death when inhaled.Symptoms include nausea, dizziness,and drowsiness. Keep cockpit and cab-in areas well ventilated. Avoid blocking
exhaust outlets.
1. If there is an air vent screw on the fueltank cap, loosen it 2 or 3 turns.
2. If there is a fuel joint on the motor, firmlyconnect the fuel line to the joint. Thenfirmly connect the other end of the fuel
line to the joint on the fuel tank.
3. If a steering friction adjuster is providedon your outboard motor, securely attachthe fuel line to the fuel line clamp.
NOTE:
During engine operation place the tank hori-zontally, otherwise fuel cannot be drawn
from the fuel tank.
4. Squeeze the primer pump with the outletend up until you feel it become firm.
ZMU02022
ZMU02024
ZMU02023
ZMU02025
Operation
30
EMU27490
Starting engine
EMU27505
Manual start models (tiller control)
1. Place the gear shift lever in neutral.
NOTE:
The start-in-gear protection device preventsthe engine from starting except when in neu-
tral.
2. Attach the engine stop switch lanyard toa secure place on your clothing, or yourarm or leg. Then install the lock plate onthe other end of the lanyard into the en-gine stop switch.
WARNING
EWM00120
�
Attach the engine stop switch lanyardto a secure place on your clothing, oryour arm or leg while operating.
�
Do not attach the lanyard to clothingthat could tear loose. Do not route the
lanyard where it could become entan-gled, preventing it from functioning.
�
Avoid accidentally pulling the lanyardduring normal operation. Loss of en-gine power means the loss of moststeering control. Also, without enginepower, the boat could slow rapidly. Thiscould cause people and objects in the
boat to be thrown forward.
3. Place the throttle grip in the “ ”(start) position.
4. Pull out / turn the choke knob fully. Afterthe engine starts, replace / return theknob to the home position.
ZMU01988
N
N
ZMU04881
ZMU02026
ZMU02027
Operation
31
NOTE:
�
It is not necessary to use the choke whenstarting a warm engine.
�
If the choke knob is left in the “ ”(start) position while the engine is running,
the engine will run poorly or stall.
5. Pull the manual starter handle slowly un-til you feel resistance. Then give astrong pull straight out to crank and startthe engine. Repeat if necessary.
6. After the engine starts, slowly return themanual starter handle to its original po-sition before releasing it.
7. Slowly return the throttle grip to the fullyclosed position.
NOTE:
�
When the engine is cold, it needs to bewarmed up. For further information, seepage 35.
�
If the engine does not start on the first try,repeat the procedure. If the engine fails tostart after 4 or 5 tries, open the throttle asmall amount (between 1/8 and 1/4) andtry again. Also if the engine is warm andfails to start, open the throttle a sameamount and try to start the engine again. If
the engine still fails to start, see page 74.
EMU27562
Electric start models
1. Place the gear shift lever in neutral.
ZMU02355
ZMU02029
ZMU02030
ZMU01988
N
Operation
32
NOTE:
The start-in-gear protection device preventsthe engine from starting except when in neu-
tral.
2. Attach the engine stop switch lanyard toa secure place on your clothing, or yourarm or leg. Then install the lock plate onthe other end of the lanyard into the en-gine stop switch.
WARNING
EWM00120
�
Attach the engine stop switch lanyardto a secure place on your clothing, oryour arm or leg while operating.
�
Do not attach the lanyard to clothingthat could tear loose. Do not route thelanyard where it could become entan-gled, preventing it from functioning.
�
Avoid accidentally pulling the lanyardduring normal operation. Loss of en-gine power means the loss of moststeering control. Also, without enginepower, the boat could slow rapidly. Thiscould cause people and objects in the
boat to be thrown forward.
3. Place the throttle grip in the “ ”(start) position. After the engine starts,return the throttle to the fully closed po-sition.
4. Pull out / turn the choke knob fully. Afterthe engine starts, replace / return theknob to the home position.
NOTE:
�
It is not necessary to use the choke whenstarting a warm engine.
N
ZMU04881 ZMU02026
ZMU02027
ZMU02355
Operation
33
�
If the choke knob is left in the “ ”(start) position while the engine is running,
the engine will run poorly or stall.
5. Push the starter button to start the mo-tor. (Repeat if necessary.)
6. Immediately after the engine starts, re-lease the starter button to allow it to re-turn to its original position.
7. Slowly return the throttle grip to the fullyclosed position so that the engine doesnot stall.
CAUTION:
ECM00160
�
Never push the starter button while theengine is running.
�
Do not keep the starter motor turningfor more than 5 seconds. If the startermotor is turned continuously for morethan 5 seconds, the battery will bequickly discharged, thus making it im-possible to start the engine. The startercan also be damaged. If the engine willnot start after 5 seconds of cranking,release the starter button, wait 10 sec-
onds, then crank the engine again.
NOTE:
�
When the engine is cold, it needs to bewarmed up. For further information, seepage 35.
�
If the engine does not start on the first try,
repeat the procedure. If the engine fails tostart after 4 or 5 tries, open the throttle asmall amount (between 1/8 and 1/4) andtry again. Also if the engine is warm andfails to start, open the throttle a sameamount and try to start the engine again. If
the engine still fails to start, see page 74.
EMU27642
Electric start / remote control models
1. Place the remote control lever in neutral.
NOTE:
The start-in-gear protection device preventsthe engine from starting except when in neu-
tral.
2. Attach the engine stop switch lanyard toa secure place on your clothing, or yourarm or leg. Then install the lock plate onthe other end of the lanyard into the en-gine stop switch.
WARNING
EWM00120
�
Attach the engine stop switch lanyardto a secure place on your clothing, oryour arm or leg while operating.
�
Do not attach the lanyard to clothingthat could tear loose. Do not route thelanyard where it could become entan-gled, preventing it from functioning.
�
Avoid accidentally pulling the lanyardduring normal operation. Loss of en-
ZMU04880
Operation
34
gine power means the loss of moststeering control. Also, without enginepower, the boat could slow rapidly. Thiscould cause people and objects in the
boat to be thrown forward.
3. Turn the main switch to “ ” (on).
4. Open the throttle slightly without shiftingusing the neutral throttle lever or free ac-celerator. You may need to change thethrottle opening slightly depending onengine temperature. After the enginestarts, return the throttle to the originalposition.
NOTE:
�
On remote controls equipped with a neu-tral throttle lever, a good starting point is tolift the lever just until you feel resistance,then lift slightly more.
�
The neutral throttle lever or free accelera-tor can only be used when the remote con-
trol lever is in neutral.
5. Press in and hold the main switch to op-erate the remote choke system. The re-mote choke switch automatically returnsto its normal position when you releaseyour hand. Therefore keep the switchpressed in.
NOTE:
�
It is not necessary to use the choke whenstarting a warm engine.
�
Push in the main switch fully, or the remote
choke system will not operate.
OFF
ON
ZMU01880
N
ZMU02314
STARTOFFON
ZMU02315
Operation
35
6. Turn the main switch to “ ” (start),and hold it for a maximum of 5 seconds.
7. Immediately after the engine starts, re-lease the main switch and allow it to re-turn to “ ” (on).
CAUTION:
ECM00191
�
Never turn the main switch to “ ”(start) while the engine is running.
�
Do not keep the starter motor turningfor more than 5 seconds. If the startermotor is turned continuously for morethan 5 seconds, the battery will bequickly discharged, thus making it im-possible to start the engine. The startercan also be damaged. If the engine willnot start after 5 seconds of cranking,return the main switch to “ ” (on), wait10 seconds, then crank the engine
again.
EMU27670
Warming up engine
EMU27710
Manual start and electric start models
1. After starting the engine, allow it to idlefor 3 minutes to warm up. Failure to doso will shorten engine life.
2. Be sure the low oil pressure warning in-dicator goes off after starting the engine.
3. Check for a steady flow of water from the
cooling water pilot hole.
CAUTION:
ECM00210
�
If the low oil pressure warning indicatordoes not go off after the engine starts,stop the engine. Otherwise serious en-gine damage could occur. Check the oillevel and add oil if necessary. Consultyour Yamaha dealer if the cause for thelow oil pressure warning indicator can-not be found.
�
A continuous flow of water from the pi-lot hole shows that the water pump ispumping water through the coolingpassages. If water is not flowing out ofthe pilot hole at all times while the en-gine is running, overheating and seri-ous damage could occur. Stop theengine and check whether the coolingwater inlet on the lower case or thecooling water pilot hole is blocked.Consult your Yamaha dealer if the prob-
lem cannot be located and corrected.
EMU27740
Shifting
WARNING
EWM00180
Before shifting, make sure there are noswimmers or obstacles in the water near
ZMU02034
Operation
36
you.
CAUTION:
ECM00220
To change the boat direction or shiftingposition from forward to reverse or vice-versa, first close the throttle so that the
engine idles (or runs at low speeds).
EMU27763
Forward (tiller handle and remote control models)
Tiller control models1. Place the throttle grip in the fully closed
position.
2. Move the gear shift lever quickly andfirmly from neutral to forward.
Remote control models1. Pull up the neutral interlock trigger (if
equipped) and move the remote controllever quickly and firmly from neutral toforward.
EMU27795
Reverse (manual tilt and hydro tilt models)
WARNING
EWM00190
When operating in reverse, go slowly. Donot open the throttle more than half. Oth-erwise the boat could become unstable,which could result in loss of control and
an accident.
Tiller control models1. Place the throttle grip in the fully closed
position.
ZMU02030
ZMU02036
N
F
NF
ZMU04882
Operation
37
2. On models equipped with a tilt lock le-ver, check that it is in the lock/down po-sition.
3. Move the gear shift lever quickly andfirmly from neutral to reverse.
Remote control models1. Check that the tilt lock lever is in the lock
position.
2. Pull up the neutral interlock trigger (ifequipped) and move the remote controllever quickly and firmly from neutral toreverse.
EMU27820
Stopping engine
Before stopping the engine, first let it cool offfor a few minutes at idle or low speed. Stop-
ZMU02030
ZMU02086
ZMU02038
NR
NR
ZMU04883
ZMU02086
Operation
38
ping the engine immediately after operatingat high speed is not recommended.
EMU27844
Procedure
1. Push and hold the engine stop button orturn the main switch to “ ” (off).
2. After stopping the engine, disconnectthe fuel line if there is a fuel joint on theoutboard motor.
3. Tighten the air vent screw on the fueltank cap (if equipped).
4. Remove the key if the boat will be leftunattended.
NOTE:
The engine can also be stopped by pullingthe lanyard and removing the lock plate fromthe engine stop switch, then turning the main
switch to “ ” (off).
EMU27861
Trimming outboard motor
The trim angle of the outboard motor helpsdetermine the position of the bow of the boatin the water. Correct trim angle will help im-prove performance and fuel economy whilereducing strain on the engine. Correct trimangle depends upon the combination ofboat, engine, and propeller. Correct trim isalso affected by variables such as the load inthe boat, sea conditions, and running speed.
WARNING
EWM00740
Excessive trim for the operating condi-tions (either trim up or trim down) cancause boat instability and can makesteering the boat more difficult. This in-creases the possibility of an accident. Ifthe boat begins to feel unstable or is hardto steer, slow down and/or readjust the
trim angle.
ZMU02083
ZMU02042
ZMU02041
Operation
39
EMU27871
Adjusting trim angle for manual tilt models
There are 4 or 5 holes provided in the clampbracket to adjust the outboard motor trim an-gle.1. Stop the engine.2. Remove the trim rod from the clamp
bracket while slightly tilting the outboardmotor up.
3. Reposition the rod in the desired hole.To raise the bow (“trim-out”), move the rodaway from the transom.To lower the bow (“trim-in”), move the rod to-ward the transom.Make test runs with the trim set to differentangles to find the position that works best foryour boat and operating conditions.
WARNING
EWM00400
�
Stop the engine before adjusting thetrim angle.
�
Use care to avoid being pinched whenremoving or installing the rod.
�
Use caution when trying a trim positionfor the first time. Increase speed gradu-ally and watch for any signs of instabil-ity or control problems. Improper trim
angle can cause loss of control.
NOTE:
The outboard motor trim angle can bechanged approximately 4 degrees by shifting
the trim rod one hole.
EMU27901
Adjusting trim angle (power tilt models)
WARNING
EWM00750
�
Be sure all people are clear of the out-board motor when adjusting the tilt an-gle, also be careful not to pinch anybody parts between the drive unit andclamp bracket.
�
Use caution when trying a trim positionfor the first time. Increase speed gradu-ally and watch for any signs of instabil-ity or control problems. Improper trimangle can cause loss of control.
�
Use the power tilt switch located on thebottom engine cowling (if equipped)
1. Trim operating angle
ZMU02043
1
ZMU02007
Operation
40
only when the boat is at a complete
stop with the engine off.
Tilt the engine to the desired angle using thepower tilt switch.
NOTE:
Stay within the trim operating angle whentrimming the outboard motor using the power
tilt system.
To raise the bow (“trim-out”), tilt the engine
up.To lower the bow (“trim-in”), tilt the enginedown.Make test runs with the trim set to differentangles to find the position that works best foryour boat and operating conditions.
EMU27911
Adjusting boat trim
When the boat is on plane, a bow-up attituderesults in less drag, greater stability and effi-ciency. This is generally when the keel line ofthe boat is up about 3 to 5 degrees. With thebow up, the boat may have a greater tenden-cy to steer to one side or the other. Compen-sate for this as you steer. The trim tab canalso be adjusted to help offset this effect.When the bow of the boat is down, it is easierto accelerate from a standing start ontoplane.
Bow Up
Too much trim-out puts the bow of the boattoo high in the water. Performance and econ-omy are decreased because the hull of theboat is pushing the water and there is moreair drag. Excessive trim-out can also causethe propeller to ventilate, which reduces per-formance further, and the boat may “por-poise” (hop in the water), which could throwthe operator and passengers overboard.
ZMU02811
UP
DN
DN UPZMU04899
Operation
41
Bow Down
Too much trim-in causes the boat to “plow”through the water, decreasing fuel economyand making it hard to increase speed. Oper-ating with excessive trim-in at higher speedsalso makes the boat unstable. Resistance atthe bow is greatly increased, heightening thedanger of “bow steering” and making opera-tion difficult and dangerous.
NOTE:
Depending on the type of boat, the outboardmotor trim angle may have little effect on the
trim of the boat when operating.
EMU27933
Tilting up and down
If the engine will be stopped for some time orif the boat is moored in shallows, the out-board motor should be tilted up to protect thepropeller and casing from damage by colli-sion with obstructions, and also to reduce
salt corrosion.
WARNING
EWM00220
Be sure all people are clear of the out-board motor when tilting up and down,also be careful not to pinch any bodyparts between the drive unit and engine
bracket.
WARNING
EWM00250
Leaking fuel is a fire hazard. If there is afuel joint on the outboard motor, discon-nect the fuel line or close the fuel cock ifthe engine will be tilted for more than a
few minutes. Otherwise fuel may leak.
CAUTION:
ECM00241
�
Before tilting the outboard motor, stopthe engine by following the procedureon page 37. Never tilt the outboard mo-tor while the engine is running. Severedamage from overheating can result.
�
Do not tilt up the engine by pushing thetiller handle (if equipped) because this
could break the handle.
EMU27976
Procedure for tilting up (manual tilt models)
1. Place the gear shift lever in neutral.
ZMU01988
N
Operation
42
2. Disconnect the fuel line from the out-board motor.
3. Place the tilt lock lever (if equipped) inthe release/up position.
4. Pull up the shallow water lever (ifequipped).
5. Hold the rear of the top cowling with onehand and tilt the engine up fully.
6. Push the tilt support knob into the clampbracket. Or the tilt support bar will turn tothe lock position automatically.
EMU28005
Procedure for tilting up
Power trim and tilt models / power tilt models1. Place the remote control lever / the gear
shift lever in neutral.
2. Disconnect the fuel line from the out-board motor or close the fuel cock.
N
ZMU04881
ZMU02042
ZMU02044
ZMU02078
ZMU01988
N
Operation
43
3. Press the power trim and tilt switch /power tilt switch “ ” (up) until the out-board motor has tilted up completely.
4. Push the tilt support knob into the clampbracket or pull the tilt support lever to-ward you to support the engine.
WARNING
EWM00260
After tilting the outboard motor, be sureto support it with the tilt support knob ortilt support lever. Otherwise the outboardmotor could fall back down suddenly if oilin the power trim and tilt unit loses pres-
sure.
5. Models equipped with trim rods: Oncethe outboard motor is supported with thetilt support lever, press the power trimand tilt switch “ ” (down) to retract thetrim rods.
CAUTION:
ECM00250
Be sure to retract the trim rods complete-ly during mooring. This protects the rods
ZMU02042
ZMU02823
UP
UP ZMU04900
ZMU04884
Operation
44
from marine growth and corrosion whichcould damage the power trim and tilt
mechanism.
EMU30190
Procedure for tilting down (manual tilt models)
1. Place the tilt lock lever in the lock posi-tion.
2. Slightly tilt the engine up until the tilt sup-port bar is automatically released.
3. Slowly tilt the engine down.
EMU28053
Procedure for tilting down
Power trim and tilt models / power tilt models1. Push the power tilt / power trim and tilt
switch “ ” (up) until the outboard motoris supported by the tilt rod and the tiltsupport lever / tilt support knob becomesfree.
2. Release the tilt support lever or pull outthe tilt support knob.
3. Push the power tilt / power trim and tiltswitch “ ” (down) to lower the outboardmotor to the desired position.
EMU28060
Cruising in shallow water
The outboard motor can be tilted up partiallyto allow operation in shallow water.
ZMU02048
ZMU04886
DN
ZMU01936
UP
DN
ZMU02826
DN
DN ZMU04901
Operation
45
EMU28071
Cruising in shallow water (manual tilt models)
WARNING
EWM00710
�
Place the gear shift in neutral before us-ing the shallow water cruising system.
�
Run the boat at the lowest possiblespeed when using the shallow watercruising system. The tilt lock mecha-nism does not work while the shallowwater cruising system is being used.Hitting an underwater obstacle couldcause the outboard motor to lift out ofthe water, resulting in loss of control.
�
Do not rotate the outboard motor 180°and operate the boat in reverse. Placethe gear shift in reverse to operate theboat in reverse.
�
Use extra care when operating in re-verse. Too much reverse thrust cancause the outboard motor to lift out ofthe water, increasing the chance of ac-cident and personal injury.
�
Return the outboard motor to its normalposition as soon as the boat is back in
deeper water.
CAUTION:
ECM00260
Do not tilt the outboard motor up so thatthe cooling water inlet on the lower unit isabove the surface of the water when set-ting up for and cruising in shallow water.Otherwise severe damage from overheat-
ing can result.
EMU28123
Procedure
1. Place the gear shift lever in neutral.
ZMU02047
ZMU01988
N
Operation
46
2. Place the tilt lock lever in the release/upposition.
3. Slightly tilt the outboard motor up. Thetilt support bar will lock automatically,supporting the outboard motor in a par-tially raised position.
NOTE:
This outboard motor has 2 positions for shal-
low water cruising.
4. To return the outboard motor to the nor-mal running position, place the gear shiftlever in neutral, then place the tilt lock le-ver in the lock/down position.
5. Slightly tilt the outboard motor up untilthe tilt support bar automatically returnsto the free position.
6. Slowly lower the outboard motor to thenormal position.
EMU28090
Power trim and tilt models / power tilt models
The outboard motor can be tilted up partiallyto allow operation in shallow water.
WARNING
EWM00660
�
Place the gear shift in neutral beforesetting up for shallow water cruising.
�
Return the outboard motor to its normalposition as soon as the boat is back in
deeper water.
CAUTION:
ECM00260
Do not tilt the outboard motor up so thatthe cooling water inlet on the lower unit isabove the surface of the water when set-ting up for and cruising in shallow water.Otherwise severe damage from overheat-
ing can result.
EMU28184
Procedure for power trim and tilt / powertilt models
1. Place the gear shift lever in neutral.
N
ZMU04881
ZMU02044
ZMU02048
Operation
47
2. Slightly tilt the outboard motor up to thedesired position using the power trim / tiltswitch.
3. To return the outboard motor to the nor-mal running position, press the powertrim / tilt switch and slowly tilt the out-board motor down.
EMU28191
Cruising in other conditions
Cruising in salt water
After operating in salt water, wash out thecooling water passages with fresh water toprevent them from becoming clogged withsalt deposits.
NOTE:
For cooling system flushing instructions, see
page 51.
Cruising in turbid water
Yamaha strongly recommends that you usethe optional chromium-plated water pump kit(not available for some models) if you usethe outboard motor in turbid (muddy) waterconditions.
N
ZMU03525
ZMU01988
N
UP
ZMU01935
UP
DN
ZMU02823
UP
UP ZMU04900
48
Maintenance
EMU28217
Specifications
Dimension:
Overall length: F15EH 1001 mm (39.4 in)F15MH 1001 mm (39.4 in)F15PH 1001 mm (39.4 in)F15PR 643 mm (25.3 in)F9.9ER2 643 mm (25.3 in)F9.9MH2 1001 mm (39.4 in)FT9.9DWH 1105 mm (43.5 in)T9.9EH2 1001 mm (39.4 in)T9.9ER2 643 mm (25.3 in)
Overall width: F15EH 427 mm (16.8 in)F15MH 427 mm (16.8 in)F15PH 427 mm (16.8 in)F15PR 369 mm (14.5 in)F9.9ER2 369 mm (14.5 in)F9.9MH2 427 mm (16.8 in)FT9.9DWH 501 mm (19.7 in)T9.9EH2 427 mm (16.8 in)T9.9ER2 369 mm (14.5 in)
Overall height S: F15EH 1080 mm (42.5 in)F15MH 1080 mm (42.5 in)F9.9MH2 1080 mm (42.5 in)
Overall height L: F15EH 1207 mm (47.5 in)F15MH 1207 mm (47.5 in)F15PH 1207 mm (47.5 in)F15PR 1207 mm (47.5 in)F9.9ER2 1207 mm (47.5 in)F9.9MH2 1207 mm (47.5 in)T9.9EH2 1253 mm (49.3 in)T9.9ER2 1253 mm (49.3 in)
Overall height X: FT9.9DWH 1321 mm (52.0 in)
Transom height S: F15EH 440 mm (17.3 in)F15MH 440 mm (17.3 in)
F9.9MH2 440 mm (17.3 in)Transom height L:
F15EH 567 mm (22.3 in)F15MH 567 mm (22.3 in)F15PH 567 mm (22.3 in)F15PR 567 mm (22.3 in)F9.9ER2 567 mm (22.3 in)F9.9MH2 567 mm (22.3 in)T9.9EH2 567 mm (22.3 in)T9.9ER2 567 mm (22.3 in)
Transom height X: FT9.9DWH 635 mm (25.0 in)
Weight (AL) S: F15EH 48.0 kg (106 lb)F15MH 45.0 kg (99 lb)F9.9MH2 45.0 kg (99 lb)
Weight (AL) L: F15EH 50.0 kg (110 lb)F15MH 47.0 kg (104 lb)F15PH 55.0 kg (121 lb)F15PR 54.0 kg (119 lb)F9.9ER2 49.0 kg (108 lb)F9.9MH2 47.0 kg (104 lb)T9.9EH2 51.0 kg (112 lb)T9.9ER2 50.0 kg (110 lb)
Weight (AL) X: FT9.9DWH 52.5 kg (116 lb)
Performance:
Full throttle operating range: 4500–5500 r/min
Maximum output: F15EH 11.0 kW@5000 r/min (15 HP@5000 r/min)F15MH 11.0 kW@5000 r/min (15 HP@5000 r/min)F15PH 11.0 kW@5000 r/min (15 HP@5000 r/min)F15PR 11.0 kW@5000 r/min (15 HP@5000 r/min)F9.9ER2 7.3 kW@5000 r/min (10 HP@5000 r/min)
Maintenance
49
F9.9MH2 7.3 kW@5000 r/min (10 HP@5000 r/min)FT9.9DWH 7.3 kW@5000 r/min (10 HP@5000 r/min)T9.9EH2 7.3 kW@5000 r/min (10 HP@5000 r/min)T9.9ER2 7.3 kW@5000 r/min (10 HP@5000 r/min)
Idling speed (in neutral): F15EH 950
±
50 r/minF15MH 950
±
50 r/minF15PH 950
±
50 r/minF15PR 950
±
50 r/minF9.9ER2 950
±
50 r/minF9.9MH2 950
±
50 r/minFT9.9DWH 1050
±
50 r/minT9.9EH2 1050
±
50 r/minT9.9ER2 1050
±
50 r/min
Engine:
Type: 4-stroke L
Displacement: 323.0 cm
3
(19.71 cu.in)Bore
×
stroke: 59.0
×
59.0 mm (2.32
×
2.32 in)Ignition system:
CDISpark plug with resistor (NGK):
DPR6EA-9Spark plug gap:
0.8–0.9 mm (0.031–0.035 in)Control system:
F15EH TillerF15MH TillerF15PH TillerF15PR Remote controlF9.9ER2 Remote controlF9.9MH2 TillerFT9.9DWH TillerT9.9EH2 TillerT9.9ER2 Remote control
Starting system: F15EH ElectricF15MH ManualF15PH ElectricF15PR ElectricF9.9ER2 ElectricF9.9MH2 ManualFT9.9DWH Manual and electricT9.9EH2 ElectricT9.9ER2 Electric
Starting carburetion system: Choke valve
Valve clearance (cold engine) IN: 0.15–0.25 mm (0.0059–0.0098 in)
Valve clearance (cold engine) EX: 0.20–0.30 mm (0.0079–0.0118 in)
Min. cold cranking amps (CCA/SAE): F15EH 245.0 AF15PH 245.0 AF15PR 245.0 AF9.9ER2 245.0 AT9.9EH2 245.0 AT9.9ER2 245.0 A
Min. marine cranking amps (MCA/ABYC): F15EH 323.0 AF15PH 323.0 AF15PR 323.0 AF9.9ER2 323.0 AT9.9EH2 323.0 AT9.9ER2 323.0 A
Min. reserve capacity (RC/SAE): F15EH 52 minutesF15PH 52 minutesF15PR 52 minutesF9.9ER2 52 minutesT9.9EH2 52 minutesT9.9ER2 52 minutes
Alternator output: F15MH 80 WF9.9MH2 80 W
Alternator output for battery DC:
Maintenance
50
F15EH 10.0 AF15PH 10.0 AF15PR 10.0 AF9.9ER2 10.0 AFT9.9DWH 10.0 AT9.9EH2 10.0 AT9.9ER2 10.0 A
Drive unit:
Gear positions: Forward-neutral-reverse
Gear ratio: F15EH 2.08 (27/13)F15MH 2.08 (27/13)F15PH 2.08 (27/13)F15PR 2.08 (27/13)F9.9ER2 2.08 (27/13)F9.9MH2 2.08 (27/13)FT9.9DWH 2.92 (38/13)T9.9EH2 2.92 (38/13)T9.9ER2 2.92 (38/13)
Trim and tilt system: F15EH Manual tiltF15MH Manual tiltF15PH Power tiltF15PR Power tiltF9.9ER2 Manual tiltF9.9MH2 Manual tiltFT9.9DWH Manual tiltT9.9EH2 Manual tiltT9.9ER2 Manual tilt
Propeller mark: F15EH JF15MH JF15PH JF15PR JF9.9ER2 JF9.9MH2 JFT9.9DWH RT9.9EH2 RT9.9ER2 R
Fuel and oil:
Recommended fuel: Regular unleaded gasoline
Min. pump octane: F15EH 86F15MH 86F15PH 86F15PR 86F9.9ER2 86F9.9MH2 86T9.9EH2 86T9.9ER2 86
Fuel tank capacity: 25 L (6.60 US gal) (5.50 Imp.gal)
Recommended engine oil: 4-stroke outboard motor oil
Engine oil grade API: API SE, SF, SG, SH, SJ, SL
Engine oil type SAE: SAE10W30 or SAE10W40
Lubrication: Wet sump
Engine oil quantity (excluding oil filter): 1.0 L (1.06 US qt) (0.88 Imp.qt)
Recommended gear oil: Hypoid gear oil SAE#90
Gear oil quantity: F15EH 250.0 cm
3
(8.45 US oz) (8.82 Imp.oz)F15MH 250.0 cm
3
(8.45 US oz) (8.82 Imp.oz)F15PH 250.0 cm
3
(8.45 US oz) (8.82 Imp.oz)F15PR 250.0 cm
3
(8.45 US oz) (8.82 Imp.oz)F9.9ER2 250.0 cm
3
(8.45 US oz) (8.82 Imp.oz)F9.9MH2 250.0 cm
3
(8.45 US oz) (8.82 Imp.oz)FT9.9DWH 370.0 cm
3
(12.51 US oz) (13.05 Imp.oz)T9.9EH2 370.0 cm
3
(12.51 US oz)
Maintenance
51
(13.05 Imp.oz)T9.9ER2 370.0 cm
3
(12.51 US oz) (13.05 Imp.oz)
Tightening torque for engine:
Spark plug: 18.0 Nm (13.3 ft-lb) (1.84 kgf-m)
Propeller nut: F15EH 17.0 Nm (12.5 ft-lb) (1.73 kgf-m)F15MH 17.0 Nm (12.5 ft-lb) (1.73 kgf-m)F15PH 17.0 Nm (12.5 ft-lb) (1.73 kgf-m)F15PR 17.0 Nm (12.5 ft-lb) (1.73 kgf-m)F9.9ER2 17.0 Nm (12.5 ft-lb) (1.73 kgf-m)F9.9MH2 17.0 Nm (12.5 ft-lb) (1.73 kgf-m)FT9.9DWH 21.0 Nm (15.5 ft-lb) (2.14 kgf-m)T9.9EH2 21.0 Nm (15.5 ft-lb) (2.14 kgf-m)T9.9ER2 21.0 Nm (15.5 ft-lb) (2.14 kgf-m)
Engine oil drain bolt: 28.0 Nm (20.7 ft-lb) (2.86 kgf-m)
Engine oil filter: 18.0 Nm (13.3 ft-lb) (1.84 kgf-m)
EMU28222
Transporting and storing outboard motor
WARNING
EWM00690
�
Leaking fuel is a fire hazard. Whentransporting and storing the outboardmotor, close the air vent screw and fuelcock to prevent fuel from leaking.
�
USE CARE when transporting fuel tank,whether in a boat or car.
�
DO NOT fill fuel container to maximum
capacity. Gasoline will expand consid-erably as it warms up and can build uppressure in the fuel container. This cancause fuel leakage and a potential fire
hazard.
WARNING
EWM00700
Never get under the lower unit while it istilted, even if a motor support bar is used.Severe injury could occur if the outboard
motor accidentally falls.
CAUTION:
ECM00660
Do not use the tilt support lever or knobwhen trailering the boat. The outboardmotor could shake loose from the tilt sup-port and fall. If the motor cannot be trail-ered in the normal running position, usean additional support device to secure it
in the tilt position.
The outboard motor should be trailered andstored in the normal running position. If thereis insufficient road clearance in this position,then trailer the outboard motor in the tilt po-sition using a motor support device such asa transom saver bar. Consult your Yamahadealer for further details.
EMU28235
Clamp screw mounting models
When transporting or storing the outboardmotor while removed from a boat, keep theoutboard motor in the attitude shown.
Maintenance
52
NOTE:
Place a towel or something similar under the
outboard motor to protect it from damage.
EMU28241
Storing outboard motor
When storing your Yamaha outboard motorfor prolonged periods of time (2 months orlonger), several important procedures mustbe performed to prevent excessive damage.It is advisable to have your outboard motorserviced by an authorized Yamaha dealerprior to storage. However, you, the owner,with a minimum of tools, can perform the fol-lowing procedures.
CAUTION:
ECM01080
�
To prevent problems which can becaused by oil entering the cylinder fromthe sump, keep the outboard motor inthe attitude shown when transporting
and storing it. If storing or transportingthe outboard motor on its side (not up-right), put it on a cushion after drainingthe engine oil.
�
Do not place the outboard motor on itsside before the cooling water hasdrained from it completely, otherwisewater may enter the cylinder throughthe exhaust port and cause engine trou-ble.
�
Store the outboard motor in a dry, well-
ventilated place, not in direct sunlight.
EMU28301
Procedure
EMU28372
Flushing in a test tank
1. Wash the outboard motor body usingfresh water. For further information, seepage 55.
2. Fill the fuel tank with fresh fuel and addone ounce of “Yamaha Fuel Conditionerand Stabilizer” (Part No. LUB-FUELC-12-00) to each gallon of fuel.
NOTE:
The use of “Yamaha Fuel Conditioner andStabilizer” eliminates the need to drain thefuel system. Consult your Yamaha dealer orother qualified mechanic if the fuel system is
to be drained instead.
3. Remove the engine top cowling and si-lencer cover.
4. Install the outboard motor on the testtank.
ZMU02049
ZMU02050
Maintenance
53
5. Fill the tank with fresh water to above thelevel of the anti-cavitation plate.
CAUTION:
ECM00300
Do not run the engine without supplyingit with cooling water. Either the enginewater pump will be damaged or the en-gine will be damaged from overheating.Before starting the engine, be sure tosupply water to the cooling water passag-
es.
CAUTION:
ECM00290
If the fresh water level is below the levelof the anti-cavitation plate, or if the watersupply is insufficient, engine seizure may
occur.
6. Cooling system flushing is essential toprevent the cooling system from clog-ging up with salt, sand, or dirt. In addi-tion, fogging of the engine is mandatoryto prevent excessive engine damagedue to rust. Perform the flushing andfogging at the same time.
WARNING
EWM00090
�
Do not touch or remove electrical parts
when starting or during operation.
�
Keep hands, hair, and clothes awayfrom the flywheel and other rotating
parts while the engine is running.
7. Run the engine at a fast idle for 10–15minutes in neutral position.
8. Just prior to turning off the engine, quick-ly spray “Yamaha Stor-Rite Engine Fog-ging Oil” (Part No. LUB-STRRT-12-00)alternately into each carburetor or thefogging hole of the silencer cover, ifequipped. When properly done, the en-gine will smoke excessively and almoststall.
9. Remove the outboard motor from thetest tank.
10. Drain the cooling water completely outof the motor. Clean the body thoroughly.
11. Install the silencer cover/cap and topcowling.
EMU28400
Lubrication (except oil injection models)
1. Grease the spark plug threads and in-stall the spark plug(s) and torque toproper specification. For information onspark plug installation, see page 61.
2. Change the gear oil. For instructions,see page 69. Inspect the oil for the pres-ence of water that indicates a leaky seal.Seal replacement should be performedby an authorized Yamaha dealer prior touse.
3. Grease all grease fittings. For further de-tails, see page 59.
EMU28421
Cleaning and anticorrosion measures
1. Wash down the exterior of the outboardmotor with fresh water and dry off com-pletely.
1. Water surface2. Lowest water level
ZMU02051
1
2
Maintenance
54
2. Spray the outboard motor exterior with“Yamaha Silicone Protectant” (Part No.LUB-SILCNE-13-00).
3. Wax the cowling with a non-abrasivewax such as “Yamaha Silicone Wax”(Part No. ACC-11000-15-02).
EMU28430
Battery care
WARNING
EWM00330
Battery electrolytic fluid is dangerous; itcontains sulfuric acid and therefore ispoisonous and highly caustic.Always follow these preventive mea-sures:
�
Avoid bodily contact with electrolyticfluid as it can cause severe burns orpermanent eye injury.
�
Wear protective eye gear when han-dling or working near batteries.
Antidote (EXTERNAL):
�
SKIN - Flush with water.
�
EYES - Flush with water for 15 minutesand get immediate medical attention.
Antidote (INTERNAL):
�
Drink large quantities of water or milkfollowed by milk of magnesia, beatenegg, or vegetable oil. Get immediatemedical attention.
Batteries also generate explosive hydro-gen gas; therefore, you should alwaysfollow these preventive measures:
�
Charge batteries in a well-ventilated ar-ea.
�
Keep batteries away from fire, sparks,or open flames (for example: weldingequipment, lighted cigarettes, and soon.)
�
DO NOT SMOKE when charging or han-dling batteries.
KEEP BATTERIES AND ELECTROLYTIC
FLUID OUT OF REACH OF CHILDREN.
Batteries vary among manufacturers. There-fore the following procedures may not al-ways apply. Consult your batterymanufacturer’s instructions.Procedure1. Disconnect and remove the battery from
the boat. Always disconnect the blacknegative cable first to prevent the risk ofshorting.
2. Clean the battery casing and terminals.Fill each cell to the upper level with dis-tilled water.
3. Store the battery on a level surface in acool, dry, well-ventilated place out of di-rect sunlight.
4. Once a month, check the specific gravityof the electrolyte and recharge as re-quired to prolong battery life.
EMU28441
Flushing power unit
Perform this procedure right after operationfor the most thorough flushing.
CAUTION:
ECM01530
Do not perform this procedure while theengine is running. The water pump maybe damaged and severe damage from
overheating can result.
1. After shutting off the engine, unscrewthe garden hose connector from the fit-ting on the bottom cowling.
Maintenance
55
2. Screw the garden hose connector onto agarden hose which is connected to afresh water supply.
3. With the engine off, turn on the water tapand let the water flush through the cool-ing passages for about 15 minutes. Turnoff the water and disconnect the gardenhose.
4. When flushing is complete, reinstall thegarden hose connector on the fitting onthe bottom cowling. Tighten the connec-tor securely.
CAUTION:
ECM00540
Do not leave the garden hose connectorloose on the bottom cowling fitting or letthe hose hang free during normal opera-tion. Water will leak out of the connector
instead of cooling the engine, which cancause serious overheating. Be sure theconnector is tightened securely on the fit-
ting after flushing the engine.
NOTE:
�
When flushing the engine with the boat inthe water, tilting up the outboard motor un-til it is completely out of the water willachieve better results.
�
For cooling system flushing instructions,
see page 51.
EMU28450
Cleaning the outboard motor
After use, wash the exterior of the outboardmotor with fresh water. Flush the coolingsystem with fresh water.
NOTE:
For cooling system flushing instructions, see
page 51.
EMU28460
Checking painted surface of motor
Check the motor for scratches, nicks, or flak-ing paint. Areas with damaged paint aremore likely to corrode. If necessary, cleanand paint the areas. A touch-up paint is avail-able from your Yamaha dealer.
1. Fitting2. Garden hose connector3. Garden hose
1
2 3
ZMU04887
ZMU02052
Maintenance
56
EMU28486
Periodic maintenance
WARNING
EWM01070
Be sure to turn off the engine when youperform maintenance unless otherwisespecified. If you or the owner is not famil-iar with machine servicing, this workshould be done by your Yamaha dealer or
other qualified mechanic.
Maintenance, replacement, or repair ofthe emission control devices and sys-tems may be performed by any marineengine repair establishment or individual.All warranty repairs, however, includingthose to the emission control system,must be performed by an authorizedYamaha marine dealership.
A service manual is available for purchasethrough your Yamaha dealer for owners whohave the mechanical skills, tools, and otherequipment necessary to perform mainte-nance not covered by this owner’s manual.
EMU28510
Replacement parts
If replacement parts are necessary, use onlygenuine Yamaha parts or parts of the sametype and of equivalent strength and materi-als. Any part of inferior quality may malfunc-tion, and the resulting loss of control couldendanger the operator and passengers.Yamaha genuine parts and accessories areavailable from your Yamaha dealer.
Maintenance
57
EMU28522
Maintenance chart
Frequency of maintenance operations may be adjusted according to the operating condi-tions, but the following table gives general guidelines. Refer to the sections in this chapter forexplanations of each owner-specific action.
NOTE:
When operating in salt water, turbid or muddy water, the engine should be flushed with clean
water after each use.
The “ ” symbol indicates the check-ups which you may carry out yourself.The “ ” symbol indicates work to be carried out by your Yamaha dealer.
Item Actions
Initial Every
10 hours (1 month)
50 hours (3
months)
100 hours (6 months)
200 hours (1
year)
Anode(s) (external)Inspection / replace-ment
Anode(s) (internal)Inspection / replace-ment
Battery Inspection / charging
Cooling water pas-sages
Cleaning
Cowling clamp Inspection
Fuel filter (can be dis-assembled)
Inspection / cleaning
Fuel system Inspection
Fuel tank (Yamaha por-table tank)
Inspection / cleaning
Gear oil Change
Greasing points Greasing
Idling speed (carbure-tor models)
Inspection
Power trim and tilt unit Inspection
Propeller and cotter pinInspection / replace-ment
Shift link / shift cable Inspection / adjustment
ThermostatInspection / replace-ment
Throttle link / throttle cable / throttle pick-up timing
Inspection / adjustment
Maintenance
58
EMU28874
Maintenance chart (additional)
EMU28910
NOTE:
When using lead or high-sulfur gasoline, inspecting valve clearance may be required more
frequently than every 500 hours.
Water pumpInspection / replace-ment
Engine oil Inspection / change
Oil filter (cartridge) Change
Spark plug(s)Cleaning / adjustment / replacement
Timing beltInspection / replace-ment
Valve clearance (OHC, OHV)
Inspection / adjustment
Item ActionsEvery
500 hours (2.5 years) 1000 hours (5 years)
Timing belt Replacement
Exhaust guide, exhaust manifold
Inspection / replace-ment
Item Actions
Initial Every
10 hours (1 month)
50 hours (3
months)
100 hours (6 months)
200 hours (1
year)
Maintenance
59
EMU28931
Greasing
Yamaha marine grease (Water resistant grease)
F9.9ER, T9.9ER, F15PR
ZMU02330
Maintenance
61
EMU28952
Cleaning and adjusting spark plug
WARNING
EWM00560
When removing or installing a spark plug,be careful not to damage the insulator. Adamaged insulator could allow externalsparks, which could lead to explosion or
fire.
The spark plug is an important engine com-ponent and is easy to inspect. The conditionof the spark plug can indicate somethingabout the condition of the engine. For exam-ple, if the center electrode porcelain is verywhite, this could indicate an intake air leak orcarburetion problem in that cylinder. Do notattempt to diagnose any problems yourself.Instead, take the outboard motor to aYamaha dealer. You should periodically re-move and inspect the spark plug becauseheat and deposits will cause the spark plugto slowly break down and erode. If electrodeerosion becomes excessive, or if carbon andother deposits are excessive, you should re-place the spark plug with another of the cor-rect type.
Before fitting the spark plug, measure theelectrode gap with a wire thickness gauge;adjust the gap to specification if necessary.
When fitting the plug, always clean the gas-ket surface and use a new gasket. Wipe offany dirt from the threads and screw in thespark plug to the correct torque.
NOTE:
If a torque-wrench is not available when youare fitting a spark plug, a good estimate ofthe correct torque is 1/4 to 1/2 a turn past fin-ger-tight. Have the spark plug adjusted to thecorrect torque as soon as possible with a
torque-wrench.
EMU28962
Checking fuel system
WARNING
EWM00060
Gasoline and its vapors are highly flam-mable and explosive. Keep away fromsparks, cigarettes, flames, or other
Standard spark plug:DPR6EA-9
1. Spark plug gap2. Spark plug I.D. mark (NGK)
Spark plug gap:0.8–0.9 mm (0.031–0.035 in)
Spark plug torque:18.0 Nm (13.3 ft-lb) (1.84 kgf-m)
Maintenance
62
sources of ignition.
WARNING
EWM00910
Leaking fuel can result in fire or explo-sion.
�
Check for fuel leakage regularly.
�
If any fuel leakage is found, the fuelsystem must be repaired by a qualifiedmechanic. Improper repairs can make
the outboard unsafe to operate.
Check the fuel lines for leaks, crack, or mal-function. If a problem is found, your Yamahadealer or other qualified mechanic should re-pair it immediately.
Checkpoints
�
Fuel system parts leakage
�
Fuel line joint leakage
�
Fuel line cracks or other damage
�
Fuel connector leakage
EMU28980
Inspecting fuel filter
WARNING
EWM00310
Gasoline is highly flammable, and its va-pors are flammable and explosive.
�
If you have any question about properlydoing this procedure, consult yourYamaha dealer.
�
Do not perform this procedure on a hotor running engine. Allow the engine tocool.
�
There will be fuel in the fuel filter. Keepaway from sparks, cigarettes, flames orother sources of ignition.
�
This procedure will allow some fuel tospill. Catch fuel in a rag. Wipe up anyspilled fuel immediately.
�
The fuel filter must be reassembledcarefully with the O-ring, filter cup, andhoses in place. Improper assembly orreplacement could result in a fuel leak,which could result in a fire or explosion
hazard.
EMU29001
Cleaning fuel filter
1. Remove the nut holding the fuel filter as-sembly if equipped.
ZMU05010
1. Nut
ZMU02055
1
Maintenance
63
2. Unscrew the filter cup, catching anyspilled fuel in a rag.
3. Remove the filter element, and wash it insolvent. Allow it to dry. Inspect the filterelement and O-ring to make sure theyare in good condition. Replace them ifnecessary. If any water is found in thefuel, the Yamaha portable fuel tank orother fuel tanks should be checked andcleaned.
4. Reinstall the filter element in the cup.Make sure the O-ring is in position in thecup. Firmly screw the cup onto the filterhousing.
5. Attach the filter assembly to the bracketso that the fuel hoses are attached to thefilter assembly.
6. Run the engine and check the filter andlines for leaks.
EMU29041
Inspecting idling speed
WARNING
EWM00451
�
Do not touch or remove electrical partswhen starting or during operation.
�
Keep hands, hair, and clothes away
from the flywheel and other rotating
parts while the engine is running.
CAUTION:
ECM00490
This procedure must be performed whilethe outboard motor is in the water. Aflushing attachment or test tank can be
used.
A diagnostic tachometer should be used forthis procedure. Results may vary dependingon whether testing is conducted with theflushing attachment, in a test tank, or with theoutboard motor in the water.1. Start the engine and allow it to warm up
fully in neutral until it is running smooth-ly.
NOTE:
Correct idling speed inspection is only possi-ble if the engine is fully warmed up. If notwarmed up fully, the idle speed will measurehigher than normal. If you have difficulty ver-ifying the idle speed, or the idle speed re-quires adjustment, consult a Yamaha dealer
or other qualified mechanic.
2. Verify whether the idle speed is set tospecification. For idle speed specifica-tions, see page 48.
EMU29073
Changing engine oil
WARNING
EWM00760
�
Avoid draining the engine oil immedi-ately after stopping the engine. The oilis hot and should be handled with careto avoid burns.
�
Be sure the outboard motor is securelyfastened to the transom or a stable
1. Filter cup2. Filter element3. Filter housing4. O-ring
ZMU02079
1
4
23
Maintenance
64
stand.
CAUTION:
ECM00970
�
Do not overfill the oil, and be sure theoutboard motor is upright (not tilted)when checking and changing the en-gine oil.
�
If the oil level is above the upper levelmark, drain until the level meets thespecified capacity. Overfilling the oil
could cause leakage or damage.
CAUTION:
ECM01240
Change the engine oil after the first 10hours of operation, and every 100 hoursor at 6-month intervals thereafter. Other-
wise the engine will wear quickly.
NOTE:
Change the engine oil when the oil is still
warm.
1. Put the outboard motor in an upright po-sition (not tilted).
2. Prepare a suitable container that holds alarger amount than the engine oil capac-ity. Loosen and remove the drain screwwhile holding the container under thedrain hole. Then remove the oil filler cap.Let the oil drain completely. Wipe up anyspilled oil immediately.
3. Put a new gasket on the oil drain screw.Apply a light coat of oil to the gasket andinstall the drain screw.
NOTE:
If a torque wrench is not available when youare installing the drain screw, finger tightenthe screw just until the gasket comes intocontact with the surface of the drain hole.Then tighten 1/4 to 1/2 turn more. Tightenthe drain screw to the correct torque with a
torque wrench as soon as possible.
4. Add the correct amount of oil through thefiller hole. Install the filler cap.
ZMU02049
1. Drain screw
Drain screw tightening torque:28.0 Nm (20.7 ft-lb) (2.86 kgf-m)
Recommended engine oil:4-stroke outboard motor oil
Engine oil quantity (excluding oil filter):1.0 L (1.06 US qt) (0.88 Imp.qt)
ZMU02056
1
Maintenance
65
5. Start the engine and watch to make surethe low oil pressure warning indicator (ifequipped) turns off. Make sure thatthere are no oil leaks.
CAUTION:
ECM00680
If the low oil pressure warning indicatordoes not turn off or if there are oil leaks,stop the engine and find the cause. Con-tinued operation with a problem couldcause severe engine damage. Consultyour Yamaha dealer if the problem can-
not be located and corrected.
6. Turn off the engine and wait 3 minutes.Recheck the oil level using the dipstickto be sure the level falls between the up-per and lower marks. Fill with oil if it isbelow the lower mark, or drain to thespecified level if it is above the uppermark.
7. Dispose of used oil according to localregulations.
NOTE:
�
For more information on the disposal ofused oil, consult your Yamaha dealer.
�
Change the oil more often when operatingthe engine under adverse conditions such
as extended trolling.
EMU29112
Checking wiring and connectors
�
Check that each grounding wire is properlysecured.
�
Check that each connector is engaged se-curely.
EMU29120
Exhaust leakage
Start the engine and check that no exhaustleaks from the joints between the exhaustcover, cylinder head, and body cylinder.
EMU29130
Water leakage
Start the engine and check that no waterleaks from the joints between the exhaustcover, cylinder head, and body cylinder.
EMU29140
Engine oil leakage
Check for oil leaks on the around the engine.
NOTE:
If any leaks are found, consult your Yamaha
dealer.
ZMU02057
ZMU02058
ZMU02087
Maintenance
66
EMU29162
Checking power trim and tilt / power tilt system
WARNING
EWM00430
�
Never get under the lower unit while itis tilted, even when the tilt support leveris locked. Severe injury could occur ifthe outboard motor accidentally falls.
�
Make sure no one is under the outboard
motor before performing this test.
1. Check the power trim and tilt unit / thepower tilt unit for any sign of oil leaks.
2. Operate each of the power trim and tiltswitches / the power tilt switches on theremote control and engine bottom cowl-ing (if equipped) to check that all switch-es work.
3. Tilt the outboard motor up and checkthat the trim and tilt rod / the tilt rod ispushed out completely.
4. Check that the trim and tilt rod / the tiltrod is free of corrosion or other flaws.
5. Tilt the outboard motor down. Checkthat the trim and tilt rod / the tilt rod oper-ates smoothly.
NOTE:
Consult your Yamaha dealer if any operation
is abnormal.
EMU29171
Checking propeller
WARNING
EWM00321
You could be seriously injured if the en-gine accidentally starts when you arenear the propeller.
�
Before inspecting, removing, or install-ing the propeller, remove the sparkplug caps from the spark plugs. Also,place the shift control in neutral, turnthe main switch to “ ” (off) and re-move the key, and remove the lanyardfrom the engine stop switch. Turn offthe battery cut-off switch if your boathas one.
�
Do not use your hand to hold the pro-peller when loosening or tightening thepropeller nut. Put a wood block be-tween the anti-cavitation plate and thepropeller to prevent the propeller from
turning.
1. Tilt rod
ZMU02059
Maintenance
67
Checkpoints
�
Check each of the propeller blades forwear, erosion from cavitation or ventila-tion, or other damage.
�
Check the propeller shaft for damage.
�
Check the splines / shear pin for wear ordamage.
�
Check for fish line tangled around the pro-peller shaft.
�
Check the propeller shaft oil seal for dam-age.
NOTE:
If the shear pin equipped: it is designed tobreak if the propeller hits a hard underwaterobstacle to help protect the propeller anddrive mechanism. The propeller will thenspin freely on the shaft. If this happens, the
shear pin must be replaced.
EMU30660
Removing the propeller
EMU29194
Spline models
1. Straighten the cotter pin and pull it outusing a pair of pliers.
2. Remove the propeller nut, washer, andspacer (if equipped).
3. Remove the propeller and thrust wash-er.
EMU29212
Dual thrust models
1. Straighten the cotter pin and pull it outusing a pair of pliers.
ZMU01897
1. Cotter pin2. Propeller nut3. Washer4. Propeller5. Thrust washer
1. Cotter pin2. Propeller nut
1
ZMU02062
23
45
6
43
1
2
5ZMU02329
Maintenance
68
2. Remove the propeller nut and washer.3. Remove the deflector, propeller, and
thrust washer.
EMU30670
Installing the Propeller
EMU29231
Spline models
CAUTION:
ECM00340
�
Be sure to install the thrust washer be-fore installing the propeller, otherwisethe lower case and propeller bosscould be damaged.
�
Be sure to use a new cotter pin andbend the ends over securely. Otherwisethe propeller could come off during op-
eration and be lost.
1. Apply Yamaha marine grease or a cor-rosion resistant grease to the propellershaft.
2. Install the spacer (if equipped), thrustwasher, and propeller on the propellershaft.
3. Install the spacer (if equipped) and thewasher. Tighten the propeller nut to thespecified torque.
4. Align the propeller nut with the propellershaft hole. Insert a new cotter pin in thehole and bend the cotter pin ends.
NOTE:
If the propeller nut does not align with thepropeller shaft hole after tightening to thespecified torque, tighten the nut further to
align it with the hole.
EMU29262
Dual thrust models
CAUTION:
ECM00340
�
Be sure to install the thrust washer be-fore installing the propeller, otherwisethe lower case and propeller bosscould be damaged.
�
Be sure to use a new cotter pin andbend the ends over securely. Otherwisethe propeller could come off during op-
eration and be lost.
1. Apply Yamaha marine grease or a cor-rosion resistant grease to the propellershaft.
2. Install the thrust washer and propelleron the propeller shaft. Install the deflec-tor on the propeller.
3. Install the washer and tighten the pro-peller nut to the specified torque.
4. Align the propeller nut with the propellershaft hole. Insert a new cotter pin in thehole and bend the cotter pin ends.
3. Washer4. Deflector5. Propeller6. Thrust washer
ZMU02063
Maintenance
69
NOTE:
If the propeller nut does not align with thepropeller shaft hole after tightening to thespecified torque, tighten the nut further to
align it with the hole.
EMU29281
Changing gear oil
WARNING
EWM00800
�
Be sure the outboard motor is securelyfastened to the transom or a stablestand. You could be severely injured ifthe outboard motor falls on you.
�
Never get under the lower unit while itis tilted, even when the tilt support leveror knob is locked. Severe injury couldoccur if the outboard motor accidental-
ly falls.
1. Tilt the outboard motor so that the gearoil drain screw is at the lowest point pos-sible.
2. Place a suitable container under thegear case.
3. Remove the gear oil drain screw.
NOTE:
If the magnetic gear oil drain screwequipped: remove all metal particles from
the screw before installing it.
4. Remove the oil level plug to allow the oilto drain completely.
CAUTION:
ECM00710
Inspect the used oil after it has beendrained. If the oil is milky, water is gettinginto the gear case which can cause geardamage. Consult a Yamaha dealer for re-
pair of the lower unit seals.
NOTE:
For disposal of used oil consult your Yamaha
dealer.
5. With the outboard motor in a vertical po-sition, and using a flexible or pressur-ized filling device, inject the gear oil into
ZMU02063
1. Gear oil drain screw2. Oil level plug
ZMU02064
2
1
Maintenance
70
the gear oil drain screw hole.
6. When the oil begins to flow out of the oillevel plug hole, insert and tighten the oillevel plug.
7. Insert and tighten the gear oil drainscrew.
EMU29302
Cleaning fuel tank
WARNING
EWM00920
Gasoline is highly flammable, and its va-pors are flammable and explosive.
�
If you have any question about properlydoing this procedure, consult yourYamaha dealer.
�
Keep away from sparks, cigarettes,flames, or other sources of ignitionwhen cleaning the fuel tank.
�
Remove the fuel tank from the boat be-fore cleaning it. Work only outdoors inan area with good ventilation.
�
Wipe up any spilled fuel immediately.
�
Reassemble the fuel tank carefully. Im-proper assembly can result in a fuelleak, which could result in a fire or ex-plosion hazard.
�
Dispose of old gasoline according to lo-
cal regulations.
1. Empty the fuel tank into an approvedcontainer.
2. Pour a small amount of suitable solventinto the tank. Install the cap and shakethe tank. Drain the solvent completely.
3. Remove the screws holding the fuel jointassembly. Pull the assembly out of thetank.
4. Clean the filter (located on the end of the
Recommended gear oil:Hypoid gear oil SAE#90
Gear oil quantity:F15EH 250.0 cm
3
(8.45 US oz) (8.82 Imp.oz)F15MH 250.0 cm
3
(8.45 US oz) (8.82 Imp.oz)F15PH 250.0 cm
3
(8.45 US oz) (8.82 Imp.oz)F15PR 250.0 cm
3
(8.45 US oz) (8.82 Imp.oz)F9.9ER2 250.0 cm
3
(8.45 US oz) (8.82 Imp.oz)F9.9MH2 250.0 cm
3
(8.45 US oz) (8.82 Imp.oz)FT9.9DWH 370.0 cm
3
(12.51 US oz) (13.05 Imp.oz)T9.9EH2 370.0 cm
3
(12.51 US oz) (13.05 Imp.oz)T9.9ER2 370.0 cm
3
(12.51 US oz) (13.05 Imp.oz)
ZMU02065
ZMU02066
Maintenance
71
suction pipe) in a suitable cleaning sol-vent. Allow the filter to dry.
5. Replace the gasket with a new one. Re-install the fuel joint assembly and tightenthe screws firmly.
EMU29312
Inspecting and replacing anode(s)
Yamaha outboard motors are protected fromcorrosion by sacrificial anodes. Inspect theexternal anodes periodically. Remove scalesfrom the surfaces of the anodes. Consult aYamaha dealer for replacement of externalanodes.
CAUTION:
ECM00720
Do not paint anodes, as this would render
them ineffective.
NOTE:
Inspect ground leads attached to externalanodes on equipped models. Consult aYamaha dealer for inspection and replace-ment of internal anodes attached to the pow-
er unit.
EMU29320
Checking battery (for electric start models)
WARNING
EWM00330
Battery electrolytic fluid is dangerous; itcontains sulfuric acid and therefore ispoisonous and highly caustic.Always follow these preventive mea-sures:
�
Avoid bodily contact with electrolyticfluid as it can cause severe burns orpermanent eye injury.
�
Wear protective eye gear when han-dling or working near batteries.
Antidote (EXTERNAL):
�
SKIN - Flush with water.
�
EYES - Flush with water for 15 minutesand get immediate medical attention.
Antidote (INTERNAL):
�
Drink large quantities of water or milk
ZMU02067
ZMU02924
Maintenance
72
followed by milk of magnesia, beatenegg, or vegetable oil. Get immediatemedical attention.
Batteries also generate explosive hydro-gen gas; therefore, you should alwaysfollow these preventive measures:
�
Charge batteries in a well-ventilated ar-ea.
�
Keep batteries away from fire, sparks,or open flames (for example: weldingequipment, lighted cigarettes, and soon.)
�
DO NOT SMOKE when charging or han-dling batteries.
KEEP BATTERIES AND ELECTROLYTIC
FLUID OUT OF REACH OF CHILDREN.
CAUTION:
ECM00360
�
A poorly maintained battery will quicklydeteriorate.
�
Ordinary tap water contains mineralsharmful to a battery, and should not be
used for topping up.
1. Check the electrolyte level at least oncea month. Fill to the manufacturer’s rec-ommended level when necessary. Topup only with distilled water (or pure de-ionized water suitable to use in batter-ies).
2. Always keep the battery in a good state
of charge. Installing a voltmeter will helpyou monitor your battery. If you will notuse the boat for a month or more, re-move the battery from the boat and storeit in a cool, dark place. Completely re-charge the battery before using it.
3. If the battery will be stored for longerthan a month, check the specific gravityof the fluid at least once a month and re-charge the battery when it is low.
NOTE:
Consult a Yamaha dealer when charging or
re-charging batteries.
EMU29331
Connecting the battery
WARNING
EWM00570
Mount the battery holder securely in adry, well-ventilated, vibration-free loca-tion in the boat. Install a fully charged bat-
tery in the holder.
CAUTION:
ECM01121
�
Make sure the main switch (on applica-ble models) is “ ” (off) before work-ing on the battery.
�
Reversal of the battery cables will dam-age the electrical parts.
�
Connect the red battery cable firstwhen installing the battery and discon-nect the black battery cable first whenremoving it. Otherwise, the electricalparts can be damaged.
�
The electrical contacts of the batteryand cables must be clean and properlyconnected, or the battery will not start
the engine.
Connect the red battery cable to the POSI-TIVE (+) terminal first. Then connect theblack battery cable to the NEGATIVE (-) ter-
Maintenance
73
minal.
EMU29370
Disconnecting the battery
Disconnect the BLACK cable from the NEG-ATIVE (-) terminal first. Then disconnect theRED cable from the POSITIVE (+) terminal.
EMU29390
Checking top cowling
Check the fitting of the top cowling by push-ing it with both hands. If it is loose have it re-paired by your Yamaha dealer.
EMU29400
Coating the boat bottom
A clean hull improves boat performance. Theboat bottom should be kept as clean of ma-rine growth as possible. If necessary, theboat bottom can be coated with an anti-foul-ing paint approved for your area to inhibit
marine growth.Do not use anti-fouling paint which includescopper or graphite. These paints can causemore rapid engine corrosion.
1. Red cable2. Black cable3. Battery
ZMU02068
ZMU01943
74
Trouble Recovery
EMU29424
Troubleshooting
A problem in the fuel, compression, or igni-tion systems can cause poor starting, loss ofpower, or other problems. This section de-scribes basic checks and possible remedies,and covers all Yamaha outboard motors.Therefore some items may not apply to yourmodel.If your outboard motor requires repair, bringit to your Yamaha dealer.If the engine trouble warning indicator isflashing, consult your Yamaha dealer.
Starter will not operate.
Q. Is battery capacity weak or low?A. Check battery condition. Use battery ofrecommended capacity.
Q. Are battery connections loose or corrod-ed?A. Tighten battery cables and clean batteryterminals.
Q. Is fuse for electric start relay or electric cir-cuit blown?A. Check for cause of electric overload andrepair. Replace fuse with one of correct am-perage.
Q. Are starter components faulty?A. Have serviced by a Yamaha dealer.
Q. Is shift lever in gear?A. Shift to neutral.
Engine will not start (starter operates).
Q. Is fuel tank empty?A. Fill tank with clean, fresh fuel.
Q. Is fuel contaminated or stale?
A. Fill tank with clean, fresh fuel.
Q. Is fuel filter clogged?A. Clean or replace filter.
Q. Is starting procedure incorrect?A. See page 30.
Q. Has fuel pump malfunctioned?A. Have serviced by a Yamaha dealer.
Q. Are spark plug(s) fouled or of incorrecttype?A. Inspect spark plug(s). Clean or replacewith recommended type.
Q. Are spark plug cap(s) fitted incorrectly?A. Check and re-fit cap(s).
Q. Is ignition wiring damaged or poorly con-nected?A. Check wires for wear or breaks. Tightenall loose connections. Replace worn or bro-ken wires.
Q. Are ignition parts faulty?A. Have serviced by a Yamaha dealer.
Q. Is engine stop switch lanyard not at-tached?A. Attach lanyard.
Q. Are engine inner parts damaged?A. Have serviced by a Yamaha dealer.
Engine idles irregularly or stalls.
Q. Are spark plug(s) fouled or of incorrecttype?A. Inspect spark plug(s). Clean or replacewith recommended type.
Trouble Recovery
75
Q. Is fuel system obstructed?A. Check for pinched or kinked fuel line orother obstructions in fuel system.
Q. Is fuel contaminated or stale?A. Fill tank with clean, fresh fuel.
Q. Is fuel filter clogged?A. Clean or replace filter.
Q. Have ignition parts failed?A. Have serviced by a Yamaha dealer.
Q. Has warning system activated?A. Find and correct cause of warning.
Q. Is spark plug gap incorrect?A. Inspect and adjust as specified.
Q. Is ignition wiring damaged or poorly con-nected?A. Check wires for wear or breaks. Tightenall loose connections. Replace worn or bro-ken wires.
Q. Is specified engine oil not being used?A. Check and replace oil as specified.
Q. Is thermostat faulty or clogged?A. Have serviced by a Yamaha dealer.
Q. Are carburetor adjustments incorrect?A. Have serviced by a Yamaha dealer.
Q. Is fuel pump damaged?A. Have serviced by a Yamaha dealer.
Q. Is air vent screw on fuel tank closed?A. Open air vent screw.
Q. Is choke knob pulled out?
A. Return to home position.
Q. Is motor angle too high?A. Return to normal operating position. Q. Is carburetor clogged?A. Have serviced by a Yamaha dealer.
Q. Is fuel joint connection incorrect?A. Connect correctly.
Q. Is throttle valve adjustment incorrect?A. Have serviced by a Yamaha dealer.
Q. Is battery cable disconnected?A. Connect securely.
Warning buzzer sounds or indicatorlights.
Q. Is cooling system clogged?A. Check water intake for restriction.
Q. Is engine oil level low?A. Fill oil tank with specified engine oil.
Q. Is heat range of spark plug incorrect?A. Inspect spark plug and replace it with rec-ommended type.
Q. Is specified engine oil not being used?A. Check and replace oil with specified type.
Q. Is engine oil contaminated or deteriorat-ed?A. Replace oil with fresh, specified type.
Q. Is oil filter clogged?A. Have serviced by a Yamaha dealer.
Q. Has oil feed/injection pump malfunc-tioned?
Trouble Recovery
76
A. Have serviced by a Yamaha dealer.
Q. Is load on boat improperly distributed?A. Distribute load to place boat on an evenplane.
Q. Is water pump or thermostat faulty?A. Have serviced by a Yamaha dealer.
Q. Is there excess water in fuel filter cup?A. Drain filter cup.
Engine power loss.
Q. Is propeller damaged?A. Have propeller repaired or replaced.
Q. Is propeller pitch or diameter incorrect?A. Install correct propeller to operate out-board at its recommended speed (r/min)range.
Q. Is trim angle incorrect?A. Adjust trim angle to achieve most efficientoperation.
Q. Is motor mounted at incorrect height ontransom?A. Have motor adjusted to proper transomheight.
Q. Has warning system activated?A. Find and correct cause of warning.
Q. Is boat bottom fouled with marine growth?A. Clean boat bottom.
Q. Are spark plug(s) fouled or of incorrecttype?A. Inspect spark plug(s). Clean or replacewith recommended type.
Q. Are weeds or other foreign matter tangledon gear housing?A. Remove foreign matter and clean lowerunit.
Q. Is fuel system obstructed?A. Check for pinched or kinked fuel line orother obstructions in fuel system.
Q. Is fuel filter clogged?A. Clean or replace filter.
Q. Is fuel contaminated or stale?A. Fill tank with clean, fresh fuel.
Q. Is spark plug gap incorrect?A. Inspect and adjust as specified.
Q. Is ignition wiring damaged or poorly con-nected?A. Check wires for wear or breaks. Tightenall loose connections. Replace worn or bro-ken wires.
Q. Have electrical parts failed?A. Have serviced by a Yamaha dealer.
Q. Is specified fuel not being used?A. Replace fuel with specified type.
Q. Is specified engine oil not being used?A. Check and replace oil with specified type.
Q. Is thermostat faulty or clogged?A. Have serviced by a Yamaha dealer.
Q. Is air vent screw closed?A. Open the air vent screw.
Q. Is fuel pump damaged?A. Have serviced by a Yamaha dealer.
Trouble Recovery
77
Q. Is fuel joint connection incorrect?A. Connect correctly.
Q. Is heat range of spark plug incorrect?A. Inspect spark plug and replace it with rec-ommended type.
Q. Is high pressure fuel pump drive belt bro-ken?A. Have serviced by a Yamaha dealer.
Q. Is engine not responding properly to shiftlever position?A. Have serviced by a Yamaha dealer.
Engine vibrates excessively.
Q. Is propeller damaged?A. Have propeller repaired or replaced.
Q. Is propeller shaft damaged?A. Have serviced by a Yamaha dealer.
Q. Are weeds or other foreign matter tangledon propeller?A. Remove and clean propeller.
Q. Is motor mounting bolt loose?A. Tighten bolt.
Q. Is steering pivot loose or damaged?A. Tighten or have serviced by a Yamahadealer.
EMU29432
Temporary action in emergency
EMU29440
Impact damage
WARNING
EWM00870
The outboard motor can be seriously
damaged by a collision while operating ortrailering. Damage could make the out-
board motor unsafe to operate.
If the outboard motor hits an object in the wa-ter, follow the procedure below.
1. Stop the engine immediately.2. Inspect the control system and all com-
ponents for damage. Also inspect theboat for damage.
3. Whether damage is found or not, returnto the nearest harbor slowly and careful-ly.
4. Have a Yamaha dealer inspect the out-board motor before operating it again.
EMU29462
Replacing fuse
If the fuse has blown on an electric startmodel, open the fuse holder and replace thefuse with a new one of the proper amperage.
WARNING
EWM00630
Be sure to use the specified fuse. An in-correct fuse or a piece of wire could allowexcessive current flow. This could cause
electric system damage and a fire hazard.
Trouble Recovery
78
NOTE:
Consult your Yamaha dealer if the new fuse
immediately blows again.
EMU29522
Power trim and tilt / power tilt will not operate
If the engine cannot be tilted up or down withthe power trim and tilt / the power tilt becauseof a discharged battery or a failure with thepower trim and tilt unit / the power tilt unit, theengine can be tilted manually.1. Loosen the manual valve screw by turn-
ing it counterclockwise until it stops.
2. Put the engine in the desired position,then tighten the manual valve screw by
turning it clockwise.
EMU29531
Starter will not operate
If the starter mechanism does not operate(the engine cannot be cranked with the start-er), the engine can be started with an emer-gency starter rope.
WARNING
EWM01020
�
Use this procedure only in an emergen-cy and only to return to port for repairs.
�
When the emergency starter rope isused to start the engine, the start-in-gear protection device does not oper-ate. Make sure the remote control leveris in neutral. Otherwise the boat couldunexpectedly start to move, whichcould result in an accident.
�
Attach the engine stop switch lanyardto a secure place on your clothing, oryour arm or leg while operating.
�
Do not attach the lanyard to clothingthat could tear loose. Do not route thecord where it could become entangled,preventing it from functioning.
�
Avoid accidentally pulling the lanyardduring normal operation. Loss of en-gine power means the loss of moststeering control. Also, without enginepower, the boat could slow rapidly. Thiscould cause people and objects in theboat to be thrown forward.
�
Be sure no one is standing behind youwhen pulling the starter rope. It couldwhip behind you and injure someone.
�
An unguarded, rotating flywheel is verydangerous. Keep loose clothing andother objects away when starting theengine. Use the emergency starter ropeonly as instructed. Do not touch the fly-wheel or other moving parts when the
1. Fuse holder2. Fuse (20 A)3. Spare fuse (20 A)
1. Manual valve screw
ZMU02092
1
23
Trouble Recovery
79
engine is running. Do not install thestarter mechanism or top cowling afterthe engine is running.
�
Do not touch the ignition coil, sparkplug wire, spark plug cap, or other elec-trical components when starting or op-erating the motor. You could get an
electrical shock.
EMU29602
Emergency starting engine
1. Remove the top cowling.2. Remove the cable by pulling out it from
the starter, if the cable is equipped.
3. Remove both ends of the choke link rod.
4. Remove the starter/flywheel cover afterremoving the 3 bolts. Disconnect thewire leads from the starter/flywheel cov-
er.
5. Prepare the engine for starting. For fur-ther information, see page 30. Be surethe engine is in neutral and that the en-gine stop switch lanyard lock plate is at-tached to the engine stop switch.
6. Pull up the lever on the carburetor to op-erate the choke system when the engineis cold. After the engine starts, return thelever to the original position.
1. Start-in-gear protection cable
1. Choke link rod
ZMU02069
1
ZMU02332
1
ZMU02070
ZMU02026
ZMU02334
Trouble Recovery
80
7. Insert the knotted end of the emergencystarter rope into the notch in the flywheelrotor and wind the rope around the fly-wheel several turns clockwise.
8. Pull the rope slowly until resistance isfelt.
9. Give a strong pull straight out to crankand start the engine. Repeat if neces-sary.
EMU29760
Treatment of submerged motor
If the outboard motor is submerged, immedi-ately take it to a Yamaha dealer. Otherwisesome corrosion may begin almost immedi-ately.If you cannot immediately take the outboardmotor to a Yamaha dealer, follow the proce-dure below in order to minimize engine dam-age.
EMU29783
Procedure
1. Thoroughly wash away mud, salt, sea-weed, and so on, with fresh water.
2. Remove the spark plug(s), then face thespark plug holes downward to allow anywater, mud, or contaminants to drain.
3. Drain the fuel from the carburetor, fuelfilter, and fuel line. Drain the engine oilcompletely.
4. Fill the sump with the fresh engine oil.
5. Feed engine fogging oil or engine oilthrough the carburetor(s) and spark plugholes while cranking the engine with themanual starter or emergency starterrope.
6. Take the outboard motor to a Yamahadealer as soon as possible.
CAUTION:
ECM00400
Do not attempt to run the outboard motor
until it has been completely inspected.
ZMU02333
ZMU02074
Engine oil capacity:1.0 L (1.06 US qt) (0.88 Imp.qt)
Consumer information
83
EMU29830
YAMAHA MOTOR CORPORATION, U.S.A. FOUR-STROKE OUTBOARD MOTOR THREE-YEAR LIMITED WARRANTY
Consumer information
85
EMU29841
IMPORTANT WARRANTY INFORMATION IF YOU USE YOUR YAMAHA OUTSIDE THE USA OR CANADA
Printed in JapanMay 2005–0.6 × 1 ! Printed on raecycled paper
66M-9-1C Hyoshi 4/21/05 5:03 PM Page 4
YAMAHA MOTOR CO., LTD.MADE IN JAPANPAYS D'ORIGINE JAPON
OUTBOARD MOTOR WARRANTY REGISTRATION
ENREGISTREMENT DE LA GARANTIE DU MOTEUR HORS-BORD
Please complete and mail this card. This information is necessary to accurately register your unit for warranty.Veuillez signer ci-dessous pour attester que le montage et l’inspection ont été faits dans le respect des directives d’inspection et
que la marche à suivre pour la garantie et l’entretien a été expliquée à l’acheteur au détail.
OUTBOARD MOTOR MODEL AND SERIAL NUMBER (From I.D. label on clamp bracket)MODÉLE ET NO. DE SÉRIE DU MOTEUR HORS-BORD (sur l’étiquette d’identification de la presse de fixation)
(For Dealer Use Only)(A l’usage du concessionnaire)YAMAHA DEALER NUMBERNO. DU CONCESSIONNAIRE YAMAHA
DEALER NAMENOM DU CONCESSIONNAIRE
DATE SOLDDATE DELIVRAISON
OWNER’S NAMENOM DUPROPRIÉTAIRE
ADDRESSADRESSE
PHONE NUMBER ( )NUMÉRO DE TÉLÉPHONE
USAGE(Check One)UTILISATION(En cocher un.)
PLEASURELOISIRCOMMERCIALCOMMERCIAL
MONTH DAY YEARMOIS JOUR ANNÉE
FIRST LASTPRÉNOM NOM DE FAMILLE
STREETRUE
CITY STATE/PROVINCE ZIPVILLE PROVINCE CODE POSTAL
Warranty card-04 2/17/03 2:41 PM Page 1