F115LF115

OWNER’S MANUAL

68V-28199-18

U.S.A.EditionLIT-18626-07-13

68V-9-18 Hyoshi 06.2.24 9:19 ページ 1

EMU25060

ZMU01690

Read this owner’s manual carefully before operating your outboard motor.

68V-9-18 Hyoshi 06.2.24 9:20 ページ 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 F115TR, LF115TR and the standard ac-cessories are used as a base for the expla-nations and illustrations in this manual.Therefore some items may not apply to ev-

ery model.

EMU25110

F115, LF115OWNER’S MANUAL

©2006 by Yamaha Motor Corporation, USA1st edition, March 2006

All rights reserved.Any reprinting or unauthorized usewithout the written permission ofYamaha Motor Corporation, USA

is expressly prohibited.Printed in Japan

P/N LIT-18626-07-13

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 .................................. 4

Basic boating rules (Rules of the road) .............................................. 5

Steering and sailing rules and sound signals.................................. 5

Rules when encountering vessels .... 5Other special situations..................... 6

Fueling instructions ......................... 8

Gasoline............................................ 9Engine oil .......................................... 9

Battery requirement....................... 10

Battery specifications ...................... 10

Propeller selection......................... 10Start-in-gear protection ................. 11

Basic components .......................... 12

Main components.......................... 12

Remote control................................ 13Remote control lever ....................... 14Neutral interlock trigger ................... 14Neutral throttle lever........................ 14Free accelerator .............................. 15Tiller handle .................................... 15Gear shift lever................................ 15Throttle grip ..................................... 16Throttle indicator ............................. 16Throttle friction adjuster................... 16Engine stop lanyard switch ............. 17Engine stop button .......................... 18Main switch ..................................... 18Steering friction adjuster ................. 18Power trim and tilt switch on remote

control or tiller handle ................... 19Power trim and tilt switch on bottom

engine cowling .............................. 19Power trim and tilt switches (twin

binnacle type) ............................... 20

Trim tab with anode.........................20Tilt support lever for power trim and

tilt or hydro tilt model.....................21Top cowling lock lever

(pull up type) .................................21Flushing device ...............................22Water separator ..............................22Tachometer .....................................22Digital tachometer ...........................22Low oil pressure warning

indicator ........................................23Low oil pressure warning

indicator ........................................23Overheat warning indicator .............24Overheat warning indicator (digital

type) ..............................................24Speedometer (digital type) ..............24Trim meter .......................................25Trim meter (digital type) ..................25Hour meter (digital type)..................25Trip meter ........................................26Clock ...............................................26Fuel gauge ......................................26Fuel warning indicator .....................27Low battery voltage warning

indicator ........................................27Fuel management meter .................27Fuel flow meter................................28Fuel consumption meter..................28Fuel economy..................................28Twin-engine speed synchronizer ....29Command link multifunction

meters ...........................................30Tachometer unit ..............................30Speed & fuel meter unit...................33Speedometer unit ............................34Fuel management meter .................35

Warning system ............................ 36

Overheat warning (twin engines) ....36Low oil pressure warning ................37

Operation ......................................... 38

Installation..................................... 38

Mounting the outboard motor ..........38

Breaking in engine ........................ 39

Procedure for 4-stroke models........39

Table of contents

Preoperation checks ..................... 40

Fuel ................................................. 40Controls........................................... 40Engine............................................. 40Checking the engine oil level .......... 40

Filling fuel ...................................... 41

Ring Free Fuel Additive .................. 41

Operating engine........................... 41

Feeding fuel .................................... 41Starting engine................................ 42

Warming up engine ....................... 45

Manual start and electric start models .......................................... 45

Shifting .......................................... 45

Forward (tiller handle and remote control models) ............................. 45

Reverse (automatic reverse lock and power trim and tilt models)..... 46

Stopping engine ............................ 47

Procedure ....................................... 47

Trimming outboard motor.............. 48

Adjusting trim angle ........................ 48Adjusting boat trim .......................... 49

Tilting up and down ....................... 50

Procedure for tilting up (power trim and tilt models / power tilt models) ......................................... 51

Procedure for tilting down (power trim and tilt models / power tilt models) ......................................... 52

Cruising in shallow water .............. 53

Power trim and tilt models / power tilt models...................................... 53

Cruising in other conditions........... 54

Maintenance..................................... 56

Specifications ................................ 56Transporting and storing outboard

motor ........................................... 57

Storing outboard motor ................... 57Procedure ....................................... 58Lubrication ...................................... 59Cleaning and anticorrosion

measures ...................................... 59Battery care..................................... 59Flushing power unit ......................... 60

Cleaning the outboard motor...........61Checking painted surface of

motor.............................................61

Periodic maintenance ................... 61

Replacement parts ..........................61Maintenance chart...........................62Maintenance chart (additional) ........63Greasing..........................................64Cleaning and adjusting spark

plug ...............................................64Checking fuel system ......................65Inspecting idling speed....................66Changing engine oil ........................66Checking wiring and connectors .....68Exhaust leakage..............................68Water leakage .................................68Engine oil leakage...........................68Checking power trim and tilt

system...........................................68Checking propeller ..........................69Removing the propeller ...................70Installing the Propeller.....................70Changing gear oil ............................71Inspecting and replacing

anode(s)........................................72Checking battery (for electric start

models) .........................................73Connecting the battery ....................73Disconnecting the battery................74Checking top cowling ......................74Coating the boat bottom..................74

Trouble Recovery............................ 75

Troubleshooting ............................ 75Temporary action in emergency ... 78

Impact damage ...............................78Running single engine.....................78Replacing fuse ................................79Power trim and tilt / power tilt will

not operate....................................79Water separator warning indicator

blinks while cruising ......................80Starter will not operate ....................81Emergency starting engine .............82

Treatment of submerged motor .... 83

Procedure........................................83

Table of contents

Consumer information.................... 84

Important warranty information for U.S.A. and Canada ..................... 84

YAMAHA MOTOR CORPORATION, U.S.A. FOUR-STROKE OUTBOARD MOTOR THREE-YEAR LIMITED WARRANTY ................................ 86

IMPORTANT WARRANTY INFORMATION IF YOU USE YOUR YAMAHA OUTSIDE THE USA OR CANADA ...................... 88

1

General information

EMU25170

Identification numbers record

EMU25183

Outboard motor serial number

The outboard motor serial number isstamped on the label attached to the portside of the clamp 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.

EMU31560

Approval label of emission control certif-icate

This label is attached to the bottom cowling.New Technology; (4-stroke) MFI

1. Outboard motor serial number location

1. Key number

1. Approval label location

ZMU04276

1

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

ZMU04277

1

ZMU04776

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.

ZMU04275

General information

5

EMU25413

Label (counter rotation models)

WARNING

EWM01281

Use only a counterclockwise rotationpropeller with this engine.Counterclockwise propellers are markedwith a letter “L” after the size indication.The wrong type of propeller could causethe boat to go in an unexpected direction,

which could lead to an accident.

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 thesame 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-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-

General information

6

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 riskof 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 theother 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 a

General information

7

bend 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 anyfishing vessel.

3. In a narrow channel, a sailing vesselshould 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.

EMU31440

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:YAMALUBE 4-M FC-W oil or 4-stroke motor oil with a combination of the fol-lowing SAE and API oil classifications

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):4.3 L (4.55 US qt) (3.78 Imp.qt)

General information

10

EMU25700

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

NOTE:

The engine cannot be started if battery volt-

age is too low.

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 to

Minimum cold cranking amps (CCA/SAE):

380.0 AMinimum marine cranking amps (MCA/ABYC):

502.0 AMinimum reserve capacity (RC/SAE):

124 minutes

ZMU01710

1. Propeller diameter in inches2. Propeller pitch in inches3. Type of propeller (propeller mark)

ZMU04608

-x1 2 3

General information

11

rise 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 69.

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.

12

Basic components

EMU25799

Main componentsNOTE:

* May not be exactly as shown; also may not be included as standard equipment on all mod-

els.

F115, LF115

1

2

2

3

4

56

7

8

9

11

12 13 14

15 16

17 18 19

ZMU04773

10

1. Top cowling2. Top cowling lock lever(s)3. Drain screw4. Anti-cavitation plate5. Trim tab (anode)6. Propeller*7. Cooling water inlet8. Anode9. Flushing device10. Water separator11. Power trim and tilt switch12. Remote control box (side mount type)*13. Remote control box (binnacle mount type)*14. Switch panel (for use with binnacle type)*

15. Tachometer*16. Trim meter*17. Digital speedometer*18. Digital tachometer*19. Fuel management meter*

Basic components

13

EMU26180

Remote control

The remote control lever actuates both theshifter and the throttle. The electrical switch-es are mounted on the remote control box.

1

4 6

32

5

ZMU05429

1. Tachometer unit (Square type)*2. Tachometer unit (Round type)*3. Speedometer unit (Square type)*4. Speed & fuel meter unit (Square type)*5. Speed & fuel meter unit (Round type)*6. Fuel management meter (Square type)*

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

Basic components

14

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.

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.

1. Remote control lever2. Power trim and tilt switch3. Free accelerator4. Throttle friction adjuster

1. Neutral “ ”

2. Forward “ ”

3. Reverse “ ”4. Shift5. Fully closed6. Throttle7. Fully open

23

21

4

ZMU04569

1. Neutral “ ”

2. Forward “ ”

3. Reverse “ ”4. Shift5. Fully closed6. Throttle7. Fully open

1. Neutral interlock trigger

N1F

7

6

2R

34 4

65

7

5

ZMU04573

Basic components

15

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.

EMU26232

Free accelerator

To open the throttle without shifting into ei-ther forward or reverse, push the free accel-erator button and move the remote controllever.

NOTE:

�

The free accelerator button can only be

used when the remote control lever is inthe neutral position.

�

After the button is pushed, the throttle be-gins to open after the remote control leveris moved at least 35°.

�

After using the free accelerator, return theremote control lever to the neutral position.The free accelerator button will return au-tomatically to its set position. The remotecontrol will then engage forward and re-

verse normally.

EMU25911

Tiller handle

To change direction, move the tiller handle tothe left or right as necessary.

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.

1. Fully open2. Fully closed

1. Fully open2. Fully closed3. Free accelerator

1

3

2

ZMU04575

Basic components

16

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.

EMU25971

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

EWM00031

Do not overtighten the friction adjuster. Ifthere is too much resistance, it could bedifficult to move the remote control leveror throttle grip, which could result in an

accident.

1. Forward “ ”

2. Neutral “ ”

3. Reverse “ ”

1. Throttle indicator

Basic components

17

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 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.

NOTE:

The engine cannot be started with the lock

plate removed.

ZMU04646

1. Lanyard2. Lock plate

1. Lanyard2. Lock plate

ONSTARTOFF

ONSTARTOFF

1ZMU04564

2

Basic components

18

EMU26001

Engine stop button

To open the ignition circuit and stop the en-gine, push this 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.

EMU26111

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 theport side “A”.

1. Lanyard2. Lock plate

ONOFF START

ONOFF START

ZMU04566

Basic components

19

To decrease resistance, turn the lever to thestarboard side “B”.

WARNING

EWM00040

Do not overtighten the friction adjuster. Ifthere is too much resistance, it could bedifficult to steer, which could result in an

accident.

NOTE:

�

Check the tiller handle for smooth move-ment when the lever is turned to the star-board side “B”.

�

Do not apply lubricants such as grease tothe friction areas of the steering friction ad-

juster.

EMU26141

Power trim and tilt switch on remote control or tiller handle

The power trim and tilt system adjusts theoutboard motor angle in relation to the tran-som. Pressing the switch “ ” (up) trims theoutboard motor up, then tilts it up. Pressingthe switch “ ” (down) tilts the outboard mo-tor down and trims it down. When the switchis released, the outboard motor will stop in itscurrent position.

NOTE:

For instructions on using the power trim and

tilt switch, see pages 48 and 50.

EMU26151

Power trim and tilt switch on bottom engine cowling

The power trim and tilt switch is located onthe side of the bottom engine cowling. Press-ing the switch “ ” (up) trims the outboardmotor up, then tilts it up. Pressing the switch“ ” (down) tilts the outboard motor downand trims it down. When the switch is re-leased, the outboard motor will stop in its

ZMU03591AB

Basic components

20

current position.

WARNING

EWM01030

Use the power trim and tilt switch locatedon the bottom engine cowling only whenthe boat is at a complete stop with the en-gine off. Attempting to use this switchwhile the boat is moving could increasethe risk of falling overboard and coulddistract the operator, increasing the riskof collision with another boat or an obsta-

cle.

NOTE:

For instructions on using the power trim and

tilt switch, see page 50.

EMU26161

Power trim and tilt switches (twin binnacle type)

The power trim and tilt system adjusts theoutboard motor angle in relation to the tran-som. Pushing the switch “ ” (up) trims theoutboard motor up, then tilts it up. Pressingthe switch “ ” (down) tilts the outboard mo-tor down and trims it down. When the switchis released, the outboard motor will stop in itscurrent position.

NOTE:

�

On the dual engine control, the switch onthe remote control grip controls both out-board motors at the same time.

�

For instructions on using the power trim

and tilt switches, see pages 48 and 50.

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 thestarboard side “B” in the figure.

CAUTION:

ECM00840

The trim tab also serves as an anode to

1. Power trim and tilt switch

UP

DN

ZMU04223

1

1. Power trim and tilt switch

ZMU04601

DN

UP

1

Basic components

21

protect the engine from electrochemicalcorrosion. Never paint the trim tab as it

will become ineffective as an anode.

EMU26340

Tilt support lever for power trim and tilt or hydro tilt model

To keep the outboard motor in the tilted upposition, lock the tilt support lever to theclamp bracket.

EMU26382

Top cowling lock lever (pull up type)

To remove the engine top cowling, pull upthe lock lever(s) and lift off the cowling.When installing the cowling, check to be sureit fits properly in the rubber seal. Then lockthe cowling by moving the lever(s) down-ward.

1. Trim tab2. Bolt3. Cap

1

2

3

ZMU02525

A

B

AB

ZMU01863

1. Tilt support lever

1. Top cowling lock lever(s)

ZMU03979

1

ZMU04225

1

Basic components

22

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 60.

EMU31702

Water separator

This engine has a combination fuel filter/wa-ter separator and associated warning sys-tem. If water separated from the fuelexceeds a specific volume, the warning de-vice will activate.

Activation of warning device

�

The water separator warning indicator willblink.

�

The buzzer will sound intermittently onlywhen the gear shift is in neutral.

�

If the warning system has activated, stopthe engine and consult a Yamaha dealerimmediately.

EMU26470

Tachometer

This gauge shows the engine speed and hasthe following functions.

EMU26491

Digital tachometer

The tachometer shows the engine speedand has the following functions.

NOTE:

All segments of the display will light momen-

1. Top cowling lock lever(s)

1. Flushing device

ZMU04226

1

1

ZMU04256

1. Tachometer2. Warning indicator(s)

ZMU05483

ZMU04578

1

2

Basic components

23

tarily after the main switch is turned on and

will return to normal thereafter.

NOTE:

The water separator and engine troublewarning indicators only operate when the en-gine is equipped with the appropriate func-

tions.

EMU26503

Low oil pressure warning indicator

If oil pressure drops too low, this indicator willflash. For further information, see page 36.

CAUTION:

ECM00020

�

Do not continue to run the engine if thelow oil pressure warning indicator is onand the engine oil level is lower. Seri-ous engine damage will occur.

�

The low oil pressure warning indicatordoes not indicate the engine oil level.Use the oil dipstick to check the re-maining oil quantity. For further infor-

mation, see page 40.

EMU26522

Low oil pressure warning indicator

If oil pressure drops too low, the warning in-dicator will start to blink. For further informa-tion, see page 36.

CAUTION:

ECM00020

�

Do not continue to run the engine if thelow oil pressure warning indicator is onand the engine oil level is lower. Seri-ous engine damage will occur.

�

The low oil pressure warning indicatordoes not indicate the engine oil level.Use the oil dipstick to check the re-maining oil quantity. For further infor-

mation, see page 40.

1. Tachometer2. Trim meter3. Hour meter4. Low oil pressure warning indicator5. Overheat warning indicator6. Water separator warning indicator7. Engine trouble warning indicator8. Set button9. Mode button

1

5

2

4

3

76

8 9 ZMU04185

1. Low oil pressure warning indicator

ZMU04754

ZMU017361

Basic components

24

EMU26572

Overheat warning indicator

If the engine temperature rises too high, thisindicator will flash. For further information onreading the indicator, see page 36.

CAUTION:

ECM00050

Do not continue to run the engine if theoverheat warning indicator is on. Serious

engine damage will occur.

EMU26581

Overheat warning indicator (digital type)

If the engine temperature rises too high, thewarning indicator will start to blink. For fur-ther information on reading the indicator, seepage 36.

CAUTION:

ECM00050

Do not continue to run the engine if theoverheat warning indicator is on. Serious

engine damage will occur.

EMU26600

Speedometer (digital type)

This gauge shows the boat speed.

NOTE:

After the main switch is first turned on, allsegments of the display come on as a test.After a few seconds, the gauge will changeto normal operation. Watch the gauge whenturning on the main switch to make sure all

segments come on.

NOTE:

The speedometer displays km/h, mph, orknots, according to operator preference. Se-lect the desired unit of measurement by set-

ZMU04715

1. Overheat warning indicator

1. Speedometer2. Fuel gauge3. Trip meter/clock/voltmeter4. Warning indicator(s)

ZMU01737

1

Basic components

25

ting the selector switch on the back of the

gauge. See the illustration for settings.

EMU26610

Trim meter

This gauge shows the trim angle of your out-board motor.

NOTE:

Memorize the trim angles that work best foryour boat under different conditions. Adjustthe trim angle to the desired setting with the

power trim and tilt switch.

EMU26620

Trim meter (digital type)

This meter shows the trim angle of your out-board motor.

NOTE:

�

Memorize the trim angles that work bestfor your boat under different conditions.Adjust the trim angle to the desired usingthe power trim and tilt switch.

�

If the trim angle of your motor exceeds thetrim operating range, the top segment on

the trim meter display will blink.

EMU26650

Hour meter (digital type)

This meter shows the number of hours theengine has been run. It can be set to showthe total number of hours or the number ofhours for the current trip. The display canalso be turned on and off.

�

Changing the display format

�

Pressing the “ ” (mode) button chang-es the display format in the following pat-tern:

�

Total hours

→

Trip hours

→

Display off

1. Cap2. Selector switch (for speed unit)3. Selector switch (for fuel sensor)

ZMU04581

ZMU01740

ZMU01741

Basic components

26

�

Resetting the trip hours

�

Simultaneously pressing the “ ” (set)and “ ” (mode) buttons for more than1 second while the trip hours are displayedresets the trip counter to 0 (zero).

NOTE:

The total number of hours the engine has

been run cannot be reset.

EMU26690

Trip meter

This gauge displays the distance the boathas traveled since the gauge was last reset.Press the “ ” (mode) button repeatedlyuntil the indicator on the face of the gaugepoints to “ ” (trip). To reset the trip meterto zero, press the “ ” (set) and “ ”(mode) buttons at the same time.

NOTE:

�

The trip distance is shown in kilometers ormiles depending upon the unit of measure-ment selected for the speedometer.

�

The trip distance is kept in memory by bat-tery power. The stored data will be lost if

the battery is disconnected.

EMU26700

Clock

Press the “ ” (mode) button repeatedlyuntil the indicator on the face of the gaugepoints to “ ” (time). To set the clock, besure the gauge is in the “ ” (time) mode.

Press the “ ” (set) button; the hour displaywill begin blinking. Press the “ ” (mode)button until the desired hour is displayed.Press the “ ” (set) button again, the minutedisplay will begin blinking. Press the “ ”(mode) button until the desired minute is dis-played. Press the “ ” (set) button again tostart the clock.

NOTE:

The clock operates on battery power. Dis-connecting the battery will stop the clock.

Reset the clock after connecting the battery.

EMU26710

Fuel gauge

The fuel level is indicated by eight segments.When all segments are showing, the fueltank is full.

CAUTION:

ECM00860

The Yamaha fuel tank sensor differs fromconventional sensors. Incorrectly settingthe selector switch on the gauge will givefalse readings. Consult your Yamahadealer on how to correctly set the selec-

tor switch.

NOTE:

The fuel level reading can be affected by theposition of the sensor in the fuel tank and theattitude of the boat in the water. Operationwith bow-up trim or continuous turning can

Basic components

27

give false readings.

EMU26720

Fuel warning indicator

If the fuel level decreases to one segment,the fuel level warning segment will begin toblink.

CAUTION:

ECM00880

Do not continue to operate the enginewith full throttle if a warning device hasactivated. Get back to the port within troll-

ing engine speed.

EMU26730

Low battery voltage warning indicator

If battery voltage drops, the display will auto-

matically turn on and begin to blink.

CAUTION:

ECM00870

Get back to the port soon if a warning de-vice has activated. For charging the bat-

tery, consult your Yamaha dealer.

EMU26740

Fuel management meter

The fuel management meter shows the stateof the fuel consumption while the engine isrunning.

NOTE:

After the main switch is first turned on, all

1. Fuel level warning segment

ZMU01745

1. Low battery indicator

1. Fuel flow meter2. Fuel consumption meter / Fuel economy meter / Twin engine speed synchronizer3. Water separator warning indicator (operates only if the sensor has been installed)

ZMU01748

1

23

Basic components

28

segments of the display come on as a test.After a few seconds, the gauge will changeto normal operation. Watch the gauge whenturning on the main switch to make sure all

segments come on.

EMU26750

Fuel flow meter

The fuel flow meter displays the amount offuel flow over a one hour period, at the cur-rent rate of engine operation.If twin engines are installed on your boat, thefuel flow meter displays the total fuel flow ofboth the port and starboard engines. It alsodisplays “ ” (for port and starboard).

Use the “ ” (set) button to rotate the fuelflow display in the following order:

�

Press the “ ” (set) button once to displaythe fuel flow of the starboard engine. An“ ” (for starboard) will also be displayed.

�

Press the “ ” (set) button a second timeto display the fuel flow of the port engine.A “ ” (for port) will also be displayed.

�

Press the “ ” (set) button a third time toreturn the display to the total fuel flow ofboth engines. “ ” (for port and starboard)will also be displayed to indicate both theport and starboard engines.

NOTE:

�

The fuel flow meter displays gallons/houror liters/hour according to operator prefer-ence. Select the desired unit of measure-

ment by setting the selector switch on theback of the gauge during installation.

�

The fuel consumption meter and fueleconomy meter will indicate the same unit

of measurement.

EMU26760

Fuel consumption meter

This gauge displays the total amount of fuelconsumed since the gauge was last reset.Press the “ ” (mode) button repeatedlyuntil the indicator on the face of the gaugepoints to total “ ” (total). To reset the totalfuel consumption to zero, press the “ ”(set) and “ ” (mode) buttons at the sametime.

EMU26770

Fuel economy

This gauge displays the distance per liter orgallon when cruising, and is only for refer-

ZMU01749

1. Selector switch

ZMU01751

Basic components

29

ence use by the operator.Press the “ ” (mode) button repeatedlyuntil the indicator on the face of the gaugepoints to “ ” (economy).

NOTE:

If twin engines are installed on your boat, thegauge will only display the total fuel economy

of both engines.

NOTE:

�

Fuel consumption varies greatly with boatdesign, weight, propeller used, engine trimangle, sea conditions (including wind), andthrottle position. Fuel consumption alsovaries slightly with the type of water (salt,fresh, and contaminate levels), air temper-ature and humidity, cleanliness of the boatbottom, engine mounting height, skill ofthe operator, and individual gasoline for-mulation (winter or summer fuel andamount of additives).

�

The Yamaha digital speedometer and fuelmanagement meter calculates speed,miles traveled, and fuel economy by watermovement at the stern of the boat. Thisdistance can vary greatly from the actualdistance traveled because of water cur-rents, sea swells, and the condition of thewater speed sensor (partially plugged ordamaged).

�

Individual engines may slightly vary in their

fuel consumption due to manufacturingvariations. These variations can be evengreater if the engines are of different yearmodels. In addition, variations in propel-lers, even of the same basic dimensions ofthe same design, can also cause a slight

variation in fuel consumption.

EMU26780

Twin-engine speed synchronizer

This gauge displays the difference in enginespeed (r/min) between the port and star-board engines for reference purposes whensynchronizing the two engines’ speeds.Press the “ ” (mode) button repeatedlyuntil the indicator on the face of the gaugepoints to “ ” (synchronizer).

ZMU01752

1. Port engine speed is higher2. Port engine speed is slightly higher3. Engine speed is synchronized evenly between port and starboard engines4. Starboard engine speed is slightly higher

ZMU01753

ZMU01754

1

2

3

4

5

Basic components

30

NOTE:

If the two engines’ speeds are not synchro-nized while cruising, they can be synchro-

nized by adjusting trim angle or throttle.

EMU31640

Command link multifunction meters

Command link multifunction meters have 6kinds of meter units; tachometer unit (squareor round types), speedometer unit (squaretype), speed & fuel meter unit (square orround types), and fuel management meter(square type). The indicator system is slight-ly different between the round and squaretypes. Check the model and type of your unitcarefully. This manual describes mainly thewarning indicators. For more details on set-ting meters or changing indicator systems,see the attached operation manual.

EMU31680

Tachometer unit

The tachometer shows the engine revolu-tions per minute. It has functions of trimmeter, adjusting trolling speed, cooling wa-ter/engine temperature display, battery volt-age display, total hour/trip hour display, oilpressure display, water detection warning,engine trouble warning, and periodic mainte-nance notification. If optional sensors areconnected to the unit, cooling water pressuredisplay will be available. For the optionalsensor, consult your Yamaha dealer. The ta-chometer unit is available in round or squaretypes. Check your tachometer unit type.

5. Starboard engine speed is higher

1. Set button2. Mode button

1. Tachometer2. Trim meter3. Multifunction display4. Cooling water pressure5. Cooling water/engine temperature6. Water detection warning indicator7. Battery voltage8. Oil pressure (4-stroke models)

21

ZMU05415

2

3

1

4

5

6

7

8 ZMU05416

Basic components

31

NOTE:

The tachometer unit shows various kinds ofinformation according to the setting madeusing the “ ” (set) and “ ” (mode) but-tons. For details, see the attached operation

manual.

Preoperation checks

Place the gear shift lever in neutral and turnthe main switch to “ ” (on). After all the dis-plays come on and the total hour displaycomes on, the gauge will change to normaloperation. If the buzzer sounds and the wa-ter separator warning indicator blinks, con-sult your Yamaha dealer immediately.

NOTE:

To stop the buzzer, press the “ ” (set) or

“ ” (mode) button.

Low oil pressure warning

When the engine oil pressure drops too low,the low oil pressure warning indicator willstart to blink, and the engine speed will auto-matically decrease to about 2000 r/min.

Stop the engine immediately if the buzzersounds and the low oil pressure warning in-dicator blinks. Check the engine oil quantityand replenish oil if necessary. If the warning

1. Set button2. Mode button

1. Tachometer2. Trim meter3. Multifunction display4. Water detection warning indicator5. Engine trouble warning/maintenance indica-tor6. Cooling water pressure7. Oil pressure (4-stroke models)8. Cooling water/engine temperature9. Battery voltage

21

ZMU05417

1 4 5 2

3

6 87 9 ZMU05418

ZMU05430

ZMU05431

Basic components

32

device has activated while the appropriateengine oil quantity is maintained, consultyour Yamaha dealer.

CAUTION:

ECM01600

Do not continue to run the engine if thelow oil pressure warning device has acti-

vated. Serious engine damage will occur.

Overheat warning

If the engine temperature rises too high whilecruising, the overheat warning indicator willstart to blink. The engine speed will automat-ically decrease to about 2000 r/min.

Stop the engine immediately if the buzzersounds and the overheat warning device hasactivated. Check the cooling water inlet forclogging.

CAUTION:

ECM01590

�

Do not continue to run the engine if theoverheat warning indicator blinks. Seri-

ous engine damage will occur.

�

Do not continue to operate the engine ifa warning device has activated. Con-sult your Yamaha dealer if the problem

cannot be located and corrected.

Water separator warning

This indicator will blink when water has accu-mulated in the water separator (fuel filter)while cruising. In such an event, stop the en-gine immediately and see page 78 of thismanual to drain the water from the fuel filter.Get back to the port soon and consult aYamaha dealer immediately.

CAUTION:

ECM00910

Gasoline mixed with water could cause

damage to the engine.

Engine trouble warning

This indicator will blink when the engine mal-functions while cruising. Get back to the port

ZMU05421

ZMU05422

ZMU05423

ZMU05424

Basic components

33

soon and consult a Yamaha dealer immedi-ately.

CAUTION:

ECM00920

In such an event, the engine will not oper-ate properly. Consult a Yamaha dealer

immediately.

Low battery voltage warning

When the battery voltage drops, the low bat-tery voltage warning indicator and the bat-tery voltage value will start to blink. Get backto the port soon if the low battery voltagewarning device has activated. For chargingthe battery, consult your Yamaha dealer.

EMU31610

Speed & fuel meter unit

This unit shows the boat speed and has thefunctions of fuel meter, total fuel consump-tion display, fuel economy display, fuel flowdisplay, and system voltage display. If op-tional sensors are connected to the unit, tripdisplay, water surface temperature display,depth display, and clock will be available. Forthe optional sensor, consult your Yamahadealer. The speed & fuel meter unit is avail-able in round or square types. Check yourspeed & fuel meter unit type.

ZMU05425

ZMU05426

ZMU05427

ZMU05428

Basic components

34

NOTE:

After the main switch is first turned on, all thedisplays come on as a test. After a few sec-onds, the gauge will change to normal oper-

ation.

NOTE:

The speed & fuel meter unit shows variouskinds of information according to the settingmade with the “ ” (set) and “ ” (mode)buttons. For details, see the attached opera-

tion manual.

EMU31620

Speedometer unit

This unit shows the boat speed and hasfunctions of fuel meter and system voltagedisplay. If optional sensors are connected tothe unit, trip display, water surface tempera-ture display, depth display, and clock will beavailable. For the optional sensor, consultyour Yamaha dealer.

1. Set button2. Mode button

1. Speedometer2. Fuel meter3. Multifunction display

1. Set button2. Mode button

21

ZMU05432

1

23

ZMU05433

21

ZMU05434

1. Speedometer2. Fuel meter3. Multifunction display

1 2

3 ZMU05435

Basic components

35

NOTE:

After the main switch is first turned on, all thedisplays come on as a test. After a few sec-onds, the gauge will change to normal oper-

ation.

NOTE:

The speedometer unit shows various kindsof information according to the setting madeusing the “ ” (set) and “ ” (mode) but-tons. In addition, the speedometer can showthe desired unit of measurement such as km/h, mph, or knots. For details, see the at-

tached operation manual.

EMU31630

Fuel management meter

This meter has functions of fuel flow meter,total consumption display, fuel economy dis-play, and remaining fuel display.

NOTE:

After the main switch is first turned on, all thedisplays come on as a test. After a few sec-onds, the gauge will change to normal oper-

ation.

NOTE:

The fuel management meter shows variouskinds of information when the operator usesthe “ ” (set) and “ ” (mode) buttons.For details, see the attached operation man-

1. Set button2. Mode button

1. Speedometer2. Fuel meter3. Multifunction display

21

ZMU05436

1

23

ZMU05437

1. Set button2. Mode button

1. Fuel flow meter2. Multifunction display

21

ZMU05438

1

2

ZMU05439

Basic components

36

ual.

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.

EMU30341

Overheat warning (twin engines)

This engine has an overheat warning device.If the engine temperature rises too high, thewarning device will activate.Activation of warning device

�

Engine speed will automatically decreaseto 2000–3500 r/min.

�

If equipped with an overheat warning indi-cator, it will light or blink.

�

The buzzer will sound.

If the warning system has activated, stop theengine and check the cooling water inlet forclogging.

NOTE:

Dual engine drive users:Should the overheat warning system of oneengine activate, the engine will slow downand the buzzer will sound. This will cause theother engine to slow down and the buzzer tosound. To switch off the warning activation

ZMU04746

ZMU04227

ZMU03025

OFF START

ON

OFF START

ON

ZMU04584

ZMU02630

Basic components

37

on the engine not affected by overheating,turn off the main switch of the engine over-

heating.

EMU30352

Low oil pressure warning

If the oil pressure drops too low, the warningdevice will activate.Activation of warning device

�

Engine speed will automatically decreaseto 2000–3500 r/min.

�

The low oil pressure warning indicator willlight or blink.

�

The buzzer will sound.

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, 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.

ZMU04587

ZMU04254

ZMU02360

OFF START

ON

OFF START

ON

ZMU04584

38

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.

1. Center line (keel line)

ZMU017601

Operation

39

EMU26930

Mounting height (boat bottom)

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 outboardmotor 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 in alignment with the bottom of theboat.

NOTE:

�

The optimum mounting height of the out-

board motor is affected by the boat/motorcombination and the desired use. Testruns at different heights can help deter-mine the optimum mounting height. Con-sult your Yamaha dealer or boatmanufacturer for further information on de-termining the proper mounting height.

�

For instructions on setting the trim angle of

the outboard motor, see page 48.

EMU30173

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.

EMU27081

Procedure for 4-stroke models

Run the engine under load (in gear with apropeller installed) for 10 hours as follows.1. First hour:

Run the engine at 2000 r/min or at ap-proximately half throttle.

2. Second hour:Run the engine at 3000 r/min or at ap-proximately three-quarter throttle.

3. Remaining eight hours:Run the engine at any speed. However,avoid operating at full throttle for morethan 5 minutes at a time.

4. After the first 10 hours:Operate the engine normally.

1. Center line (keel line)

ZMU01874

Operation

40

EMU27103

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.

EMU31550

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).

�

Check the water in the fuel filter with thewater separator warning device. Place thegear shift lever in neutral and turn the mainswitch to “ ”(on). If the buzzer soundsand the water separator warning indicatorblinks, consult your Yamaha dealer imme-diately.

EMU27130

Controls

�

Check throttle, shift, and steering for prop-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.

EMU27150

Engine

�

Check the engine and engine mounting.

�

Look for loose or damaged fasteners.

�

Check the propeller for damage.

�

Check that the battery is in good conditionand the battery connections are secure.

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.

1. Oil dipstick

ZMU04257

1

Operation

41

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.

EMU27450

Operating engine

EMU27482

Feeding fuel

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,

1. Lower level mark2. Oil dipstick3. Upper level mark

ZMU02082

13

2

Operation

42

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 or a fuel cock on theboat, firmly connect the fuel line to thejoint or open the fuel cock.

3. Squeeze the primer pump, with the ar-row pointing up, until you feel it becomefirm.

EMU27490

Starting engine

EMU27592

Electric start / prime start models

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 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.

1. Arrow

Operation

43

4. Turn the main switch to “ ” (start),and hold it for a maximum of 5 seconds.

5. 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.

NOTE:

�

When the engine is cold, it needs to bewarmed up. For further information, seepage 45.

�

If the engine is warm and fails to start,open the throttle slightly and try to start theengine again. If the engine still fails to

start, see page 75.

EMU27624

Electric start and 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-

N

ZMU04588

Operation

44

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. Turn the main switch to “ ” (on).

NOTE:

Dual engine users: When the main switch is

turned on, the buzzer operates for a few sec-onds then stops automatically. The buzzer

also operates if one of the engines stalls.

4. Turn the main switch to “ ” (start),and hold it for a maximum of 5 seconds.

5. Immediately after the engine starts, re-lease the main switch to return it 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,

ONSTARTOFF

ONSTARTOFF

ZMU04589

STARTON

ZMU04590

Operation

45

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 thecooling 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

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).

EMU27764

Forward (tiller handle and remote control models)

Tiller handle models1. Place the throttle grip in the fully closed

position.

2. Move the gear shift lever quickly and

ZMU04229

Operation

46

firmly 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.

EMU27785

Reverse (automatic reverse lock and power trim and 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 handle models1. Place the throttle grip in the fully closed

position.

2. Move the gear shift lever quickly andfirmly from neutral to reverse.

Remote control models1. Pull up the neutral interlock trigger (if

equipped) and move the remote controllever quickly and firmly from neutral toreverse.

NF

ZMU04597

Operation

47

EMU27820

Stopping engine

Before stopping the engine, first let it cool offfor a few minutes at idle or low speed. Stop-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

NR

ZMU04598

OFFON

OFFON

ZMU04600

Operation

48

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.

EMU27882

Adjusting trim angle

Power trim and tilt models

WARNING

EWM00751

�

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.

�

If equipped with a power trim and tiltswitch located on the bottom cowling,use the switch only when the boat is ata complete stop with the engine off. Donot adjust the trim angle with this

1. Trim operating angle

1ZMU04258

Operation

49

switch while the boat is moving.

Adjust the outboard motor trim angle usingthe power trim and tilt switch.

To raise the bow (trim-out), press the switch“ ” (up).To lower the bow (trim-in), press the switch“ ” (down).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.

1. Power trim and tilt switch

1. Power trim and tilt switch

1. Power trim and tilt switch

ZMU04601

DN

UP

1

UP

DN

1

ZMU04231

1. Power trim and tilt switch

Operation

50

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.

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 reducesalt corrosion.

WARNING