18TM w/11K-R & T-Maxx Revo ManifoldMAX-

OWNER'S INSTRUCTION MANUALIt is of vital importance, before attempting tooperate your engine, to read the general•SAFETY INSTRUCTIONS AND WARNINGS'section on pages 2-5 of this booklet and to strictlyadhere to the advice contained therein.

Also, please study the entire contents of thisinstruction manual, so as to familiarize yourselfwith the controls and other features of theengine.Keep these instructions in a safe place so thatyou may readily refer to them whenevernecessary.

It is suggested that any instructions suppliedwith the vehicle, radio control equipment, etc.,are accessible for checking at the same time.

CONTENTSSAFETY INSTRUCTIONS ANDWARNINGS ABOUT YOUR O.S. ENGINE...... 2-5

ENGINE CONSTRUCTION........................... 6

NOTES WHEN APPLYING AN ELECTRICSTARTER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

ABOUT THE ENGINE ...................................... 8

BEFORE STARTING ....................................... 8-10

BASIC ENGINE PARTS .................................... 10

CARBURETOR CONTROLS ........................... 11

FACTS ABOUT GLOWPLUG ........................12

INSTALLATION OF THE CARBURETOR ....... 13

INSTALLATION ..............................................13-16

STARTING THE ENGINE & RUNNING-IN .....17-19

FINAL ADJUSTMENT .................... 20-22

CARBURETOR CLEANLINESS ............. 22

CARE AND MAINTENANCE ........................... 23-24

CHECKING THE ENGINE ................. 25

TROUBLE SHOOTING ......................... 26-29

ENGINE EXPLODED VIEW & PARTS LIST.... 30-31

CARBURETOR EXPLODED VIEW &PARTS LIST... . . . . . . . . . . . . . . . . . . . . . . . . . . 32-33

O.S. GENUINE PARTS & ACCESSORIES ........... 34

THREE VIEW DRAWING ............................ 35

GUARANTEED TO KEEP YOURR/C CAR RUNNING WELL .............. 36-39

LIMITED WARRANTY............................. 41

1

SAFETY INSTRUCTIONS AND WARNINGS ABOUTYOUR O.S. ENGINERemember that your engine is not a "toy", but a highly efficient internal-combustion machine whose power is capable of harming you, or others, if it ismisused.As owner, you, alone, are responsible for the safe operation of your engine, so actwith discretion and care at all times.If at some future date, your O.S. engine is acquired by another person, we wouldrespectfully request that these instructions are also passed on to its new owner.

The advice which follows applies basically to ALL MODEL ENGINES and isgrouped under two headings according to the degree of damage or dangerwhich might arise through misuse or neglect.

These cover events whichmight involve serious (inextreme circumstances, evenfatal) injury.

These cover the many otherpossibilities, generally less obvioussources of danger, but which, undercertain circumstances, may alsocause damage or injury.

WARNINGS NOTES

2

• Model engine fuel is poi-sonous. Do not allow it tocome into contact with theeyes or mouth. Always storeit in a clearly marked con-tainer and out of the reachof children.

• Model engine fuel is alsohighly flammable. Keep itaway from an open flame,excessive heat, sources ofsparks, or anything elsewhich might ignite it. Do notsmoke or allow anyone elseto smoke, near to it.

• Never operate your engine in an en-closed space. Model engines, likeautomobile engines, exhaust deadlycarbon-monoxide. Run your engineonly in an open area.

•Model engines generateconsiderable heat. Do nottouch any part of yourengine until it has cooled.Contact with the muffler(silencer), cylinder heador exhaust header pipe, inparticular, may result in aserious burn.

WARNINGS

3

This engine is intended for model cars.Do not attempt to use it for any otherpurpose.

Mount the engine in your modelsecurely, following the manufacturers'recommendations, using appropriatescrews and locknuts.

Install an effective Silencer (muffter).Frequent close exposure to a noisyexhaust (especially in the case of themore powerful highspeed engines)may eventually impair your hearingand such noise is also likely to causeannoyance to others over a wide area.

The wearing of safety glasses is alsostrongly recommended.

Before starting the engine, alwayscheck the tightness of all the screwsand nuts especially those of joint andmovable parts such as throttle arm.Missing retightening the loose screwsand nuts often causes the partsbreakage that is capable of harmingyou.

NOTES

4

Take care that the glowplug clip orbattery leads do not come into contactwith rotating parts. Also check that thelinkage to the throttle arm is secure.

For their safety, keep all onlookers(especially small children) well back(at least 20 feet or 6 meters) whenpreparing your model for running.

To stop the engine, fully retard thethrottle stick and trim lever on thetrans-mitter, or, in an emergency, cutoff the fuel supply by pinching the fueldelivery line from the tank.

NOTESWarning! Immediately after a glowplug-ignition engine has been run and is stillwarm, conditions sometimes existwhereby it is just possible for the engineto abruptly restart if it is rotated overcompression WITHOUT the glowplugbattery being reconnected.

5

ENGINE CONSTRUCTION

With this engine, the piston willfeel tight at the top of its stroke(TDC) when the engine is cold.This is normal. The cylinder borehas a slight taper. The pistonand cylinder are designed toachieve a perfect runningclearance when they reachoperating temperature.

Cylinder Liner

When the engine is cold. When the engine-is hot.

Near TDC

Piston

CrankshaftSlight taper

6

NOTES WHEN APPLYINGAN ELECTRIC STARTER

Do not over-prime. This couldcause a hydraulic lock and damagethe engine on application of theelectric starter.

If over-primed, remove glowplug,close needle-valve and applystarter to pump out surplus fuel.Cover the head with a rag toprevent pumped out fuel cominginto your eyes.

7

ABOUT THE ENGINEThis engine is designed especially to power the T-Maxx Revo. Purposelly designed LC3 glow plug issupplied with the engine for improved power, fueleconomy and durability. The new 11K-Rcarburetor offers easy handling as well as highperformance.

Standard accessories

Glow Plug LC3

Exhaust Seal Ring 1 piece

Exhaust Manifold for T-Maxx Revo

"T-Maxx Revo" is a trademark of Traxxas Corp.

BEFORE STARTINGTools, accessories, etc.The following items arenecessary for operating the engine.

Items necessary for startingFUELGenerally, it is suggested that the user selects a fuelthat is commercially available for model two-strokeengines and contains 10-30% nitromethane. As astarting point, we recommend a fuel containing 20%nitromethane, changing to a fuel containing morenitro if necessary. When the brand of fuel ischanged, or the nitro content increased, it isadvisable to repeat the running-in procedurereferred to in the RUNNING-IN paragraphs. Pleasenote that with high-nitro fuels,although power may be increasedfor competition purposes,glowplug elements do not last aslong and engine life will beshortened.

8

Model engine fuel is poisonous. Donot allow it to come into contact withthe eyes or mouth. Always store it in aclearly marked container and out ofthe reach of children.

Model engine fuel is also highlyflammable. Keep it away from openflame, excessive heat, sources ofsparks, or anything else which mightignite it. Do not smoke or allow anyoneelse to smoke, near to it.

FUEL PUMPFor filling the fuel tank, a simple,polyethylene "squeeze" bottle,with a suitable spout, is required.

SILICONE FUEL LINEHeatproof silicone tubing ofapprox. 5mm o.d. and 2mm i.d.is required for the connectionbetween the fuel tank andengine.

FUEL FILTERTo installed in the fuel line betweenfuel tank and carburetor to preventdust coming into the carburetor.

GLOWPLUG IGNITERCommercialy available handyglowplug heater in which theglowplug battery and batteryleads are integrated.

9

BASIC ENGINE PARTSTOOLSHEX WRENCHNecessary for engine installation.1.5mm, 2mm, 2.5mm, 3mm

SCREWDRIVERNecessary for carburetor adjustments.No-1, No.2,etc

LONG SOCKET WRENCH WITH PLUG GRIPRecommended for easy removal andreplacement of the angled and recessedglowplug, the O.S.Long Socket Wrenchincorporates a special grip.

Crankshaft

CrankcaseMounting Lugs

Rear Adaptor

Exhaust

CarburetorType 11 K-R

HeatsinkHead

10

CARBURETOR CONTROLS Four adjustable controls are provided onthis carburetor.

Needle Valve

Throttle StopScrew

Mixture Control Valve

Thermo Insulator

Metering Needle

The Needle-Valve;For adjusting the mixture strength when thethrottle is fully open.The Mixture Control Valve:For changing the mixture strength at midspeed and acceleration. (Do not rotate thescrew more than one turn.)The Metering Needle:For adjusting the mixture strength at part-throttle and idling speeds, to obtain steadyidling and smooth acceleration to midspeeds.The Throttle Stop Screw:For setting the minimum idle speed:

NOTE: Readjustment may be necessary,occasionally to allow for changes in fuelformula gear ratio or clutch engagementpoint.

11

FACTS ABOUT GLOWPLUGSSince the compatibility of glowplug and fuel may havea marked effect on performance and reliability, it maybe worthwhile to choose the R/C type plug foundmost suitable after tests. Recommended O.S. plugsare LC3. Carefully install plug finger-tight, before finaltightening with the correct size plug wrench.

The role of the glowplugWith a glowplug engine, ignition is initiated by theapplication of a 1.5-volt power source. When thebattery is disconnected, the heat retained within thecombustion chamber remains sufficient to keep theplug filament glowing, thereby continuing to keep theengine running. Ignition timing is 'automatic': underreduced load, allowing higher rpm, the plug becomeshotter and, appropriately, fires the fuel/air chargeearlier; conversely, at reduced rpm, the plug becomecooler and ignition is retarded.

Glowplug lifeParticularly in the case of very high performanceengines, glowplugs must be regarded as expendableitems.

However, plug life can be extended and engineperformance maintained by careful use, i.e.:

Install a plug suitable for the engine.Use fuel containing a moderate percentage ofnitromethane.Do not run the engine too lean and do not leave thebattery connected while adjusting the needle.

When to replace the glowplugApart from when actually burned out, a plug mayneed to be replaced because it no longer delivers itsbest performance, such as when:

Filament surface has roughened and turned white.Filament coil has become distorted.Foreign matter has adhered to filament or plugbody has corroded.Engine tends to cut out when idling.Starting qualities deteriorate.

12

INSTALLATION

Install the flywheel and clutch.

First, remove the engine, installed as standard,with the engine mount.

13

Install the engine on the engine mount withearth wire.

Install the electric starter taken from theoriginal engine.Install the manifold supplied with the engine.

Adjust the aluminum stopper end so that thethrottle linkage may be made correctly.

15

Finally, insert the wire for glow plug heating inthe glow plug.

16

STARTING THE ENGINE & RUNNING-IN ('Breaking-in')For long life and high performance, everyengine needs to be 'run-in' or 'broken-in'. Withcare, running-in of the MAX-18TM can becarried out with the engine installed in thevehicle. Be sure to install the air-cleaner on thecarburetor and use a muffler-pressurized fuelsystem.The somewhat violent changes of vehicleattitude that occur in off-road running,combined with the fact that, in buggy typecars, the fuel tank is often located somedistance from the carburetor, means that fuel'head' at the carburettor can vary and upsetrunning.Thereforejt is recommended that amuffler pressurized fuel feed system be used.

Never run your vehicle without installing theair cleaner. Dust and dirt that may otherwisebe drawn into the engine will rapidly shortenits life.

Fill the tank completely with fuel.

Temporarily remove the glowplug to checkthat it glows bright red when energized.

Element glows when energized.Pliers

Replace the plug when theelement does not glow or isburnt out.

Glow Plug Igniter

17

The carburetor of this engine is set at startingsetting when the engine leaves the factory.

Switch on the transmitter, and check that all thelinkage movescorrectly.

Remember!It is vitally important to setthe throttle at the correctposition before attemptingto start the engine. If theengine is allowed to runwith the throttle too faropen under "no load"conditions, it will rapidlyoverheat and may beseriously damaged.

When the engine starts, first allow it to operatein short runs on its very rich starting settings,with the glowplug battery still connected andwith its driving wheels clear of the ground. Therich mixture will, under these conditions,provide adequate lubrication and cooling,indicated by profuse smoke from the exhaust.

Next, disconnect the glowplug battery and tryrunning the car on the track. If the enginestalls, open the throttle fractionally, but try tokeep the engine running as rich as possible: ifit stops because of being excessively over-rich, close the Needle-Valve 30° and tryagain.Run the car on the track until one tank of fuel hasbeen consumed, then close the Needle-Valve30°. Repeat this procedure again until five tanksof fuel have been consumed, during which timethe throttle may be opened for brief bursts ofincreased power. If the engine stops at mediumspeeds, close the Mixture Screw 45-90°.

Needle

The position of the needle-valvewhen starting the engine.

Close the needle-valve approx.30 deg after running the vehicleevery one full tank of fuel.Repeat this procedure aroundfive times.

18

Note:If the engine should need to be disassem-bled (e.g. for cleaning or minor parts re-placement), it is advisable to return the nee-dle-valve to the original rich, starting set-ting and check whether further running-intime is required before the car is racedagain. In the event of any major workingparts (e.g. piston/cylinder liner assembly)being replaced or the fuel being changed,especially to high nitro fuel, the completerunning-in should be repeated.

Warning!Do not touch rotating parts, engine and si-lencer when stopping the engine as theybecome very hot, and contact with themmay result in a serious burn.

To stop the engine, close the throttle toidling speed, then shut it off completely withthe trim lever on the transmitter.To cut off the fuel supply,pinch the fuel delivery tubeto the carburetor.

Fuel

19

Needle Valve

FINAL ADJUSTMENTFinal adjustment should be carried out only afterthe running-in has been completed.

Throttle Stop Screw

Close

More fuel Less fuelMetering Needle

Open

More fuel Less fuelNeedle Valve

Open

Metering Needle

Close

Run the vehicle (with throttle fully open) overthe longest available straight course, in orderto observe the model's speed. Next returnthe car to the starting point, close the Needle-Valve 30° and repeat the run, taking note ofthe improvement in performance.

Continue with further runs, graduallyreducing the Needle-Valve setting andaiming to achieve the highest straight-linespeed. Remember, however, that, if theNeedle-Valve is shut down too far, theengine will overheat and, accompanied byvisibly diminished exhaust smoke, the modelwill lose speed. At this point, throttle downimmediately, stop the vehicle and reopen theNeedle-Valve 45~90 degrees.

20

With the engine running, close the throttleand allow it to idle for about five seconds,then reopen the throttle fully. If, at this point,the engine puffs out an excessive amount ofsmoke and the vehicle does not acceleratesmoothly and rapidly, it is probable that theidle mixture is top rich. In this case, turn theMetering Needle clockwise 45-90°. If, on theother hand, the engine tends to speed upmomentarily and then cut out abruptly whenthe throttle is opened, the idle mixture is toolean. Correct this by turning the MeteringNeedle counter-clockwise 45-90°.

MOTE:Metering Needle adjustment should bemade in steps of not more than 45-90°,carefully checking the effect.on throttleresponse, of each small adjustment.

Carry out adjustments patiently, under actualrunning conditions, until the engine respondsquickly and positively to the throttle control.

Warning!Mixture adjustments (whether via theMetering Needle, or the Needle-Valve)cannot be made accurately under 'no-load'conditions, which, in any case, are notadvised, since such operation carries therisk of seriously damaging the enginethrough over-revving and overheating.

With the optimum mixture control position,light smoke is visible during high speedrunning,and the engine rpm increasessmoothly during acceleration. Rememberthat, if the engine is operated with the fuel/airmixture slightly too lean, it will overheat andrun unevenly. As with all engines, it isadvisable to set both the needle-valve andmetering needle slightly on the rich side ofthe best rpm setting, as a safety measure.

If the engine runs too fast with the throttleclosed, the throttle stop screw should beturned counter-clockwise to allow the throttleopening to be reduced.

21

Finally, beyond the nominal break-in period,a slight readjustment toward a leaner needlesetting may be required to maintainmaximum performance.

The correct functioning of the carburetordepends on its small fuel orifices remainingclear.

REALIGNMENT OF METERING NEEDLE ANDMIXTURE CONTROL VALVE

In the course of making carburetoradjustments, it is just possible that the MeteringNeedle and the Mixture Control Valve may beinadvertently screwed in or out too far andthereby moved beyond its effective adjustmentrange.The basic positions can be found by rotatingthe Metering Needle until its slotted head isflush with the Throttle Lever body.

First rotate the MixtureControl Valve until itsslotted head is flush withthe carburetor body.Then screw the valve inexactly 0.5 turn. This isthe standard position.

Mixture Control ValveCarburetor Body

Rotate the MeteringNeedle until its slottedhead is flush with theThrottle Lever body.This is the standardposition.

Throttle LeverCarburetor Body

Slide Valve Metering Needle

22

CARE AND MAINTENANCE1 .The minute particles of foreign matter, that

are present in any fuel may, by accumulatingand partially obstructing fuel flow, causeengine performance to become erratic andunreliable.O.S. 'Super-Filters' (large and small) areavailable, as optional extras, to deal with thisproblem.One of these filters installed to the pickuptube inside your refueling container, willprevent the entry of foreign material into thefuel tank. It is also recommended that a goodin-line filter be installed between the tank andcarburetor.

2. Do not forget to clean the filters regularly toremove dirt and lint that accumulate on thefilter screens. Also, clean the carburetor itselfoccasionally.

3-Atthe end of each operating session, drain outany fuel that may remain in the fuel tank.Afterwards,energize the glow-plug and try torestart the engine, to burn off any fuel that mayremain inside the engine. Repeat thisprocedure until the engine fails to fire. Do thiswhile the engine is still warm.

4. Then, inject some after-run oil into theengine, and rotate the engine with anelectric starter for 4 to 5 seconds todistribute the oil to all the working parts.

Note:Do not inject after-run oil into thecarburetor as this may cause the 0-ringsinside the carburetor to deteriorate. Theseprocedures will reduce the risks of startingdifficulties or corrosion after a period ofstorage.

23

5. Finally, when cleaning the exterior of theengine, use methanol or kerosene. Do notuse gasoline or any solvent that mightdamage the silicone fuel tubing.

Caution:The rear crankshaft bearing of this engineuses a special plastic retainer. If the fronthousing needs to be heated to remove orreplace the bearing, do not allow thebearing to exceed 120C (248F), otherwiseit may be damaged and renderedunserviceable.

Dirt and dust may lodge in

Installing Dust CapsWhen storing the engine, install the cap onthe exhaust port, carburetor, etc. to preventdust from entering the engine.

marked places.

24

CHECKING THE ENGINEEngine will not develop normal performanceafter long time running due to wearing of parts.It is suggested to replace necessary parts whenthe following symptoms are detected.

Engine sound changes and easily overheats.

Power has dropped extremely.Idling is unstable and/or engine tends to stopat idling.

In most cases, ball bearings, cylinder & pistonassembly, connecting rod and/or crankcase havebecome worn out or abnormal. Check theparts carefully and replace them if necessary.

25

TROUBLE SHOOTING

Engine fails to fire.

Fuel tank is empty.Fuel not reaching the engine.Glowplug element is burnt out.Glowplug battery dischargedClogged fuel filterAir cleaner and silencer inside is dirty.

Over priming

Fuel tubing is disconnected.Fuel tubing is kinked, split or has a hole.

Incorrect carburetor settings

Incorrect servo linkage Re-linkage after setting servo at neutral.

Return the metering needleand mixture control valve to basic position.

Connect fuel tubing securely.Check the tubing carefully and replace if necessary.

Remove glowplug and pump excess fuel.

Clean or replace fuel filter.Replace cleaner element and clean inside silencer.

Replace glowplug.Recharge or replace the battery.

Fill the tank with fuel and repeatPriming procedure.

26

Engine fires intermittently but does not run.

Insufficient fuel in the tank. Fill the tank with fuel.

Deteriorated glowplug Replace glowplug.

Clogged fuel filterAir cleaner and silencer inside is dirty.

Clean or replace fuel filter.Replace cleaner element and clean inside silencer.

Wait until engine is cooled.Engine overheated

Adjust the tension of clutch spring.Incorrect clutch release

Too immediately disconnecting plug battery. Do not disconnect plug battery and wait untilr.p.m, become stable.

Fuel in the tank extremely bubbled

Fit "0" rings to the tank screws toprevent bubbles.

27

Unsuitable glowplug

Unstable idle

Use suggested glowplug in the instructions.

Unsuitable fuel

Extremely light flywheel

Do not use extremely high nitro or low oil fuel.

Add suitable load.

Install silencer securely.Silencer is disconnected or has play

Replace the tubing.

Replace seal ring.Check the connections and secure them.

insufficient warming up or running-in.

Fuel tubing from tank to is split or broken.

Silencer or manifold is not securely connectedor disconnected.

Set the needle only after warming up.Complete running-in.

Not reaching expected peak r.p.m.

28

Poor r.p.m, drop

Too much throttle opening at idle.

Incorrect setting of transmitter Exponential function.

Incorrect carburetor fitting Fit carburetor securely.

Poor response

Deteriorated glowplug Replace glowplug.

Incorrect carburetor settings Readjust low r.p.m, range with meteringneedle and mixture control valve.

Close metering needle to adequate positionto lower idle r.p.m.

Check the transmitter setting.

29

ENG

INE

EXPL

OD

ED V

IEW

C.M

3X16

1

2

16

14M

.+M

2.6X

7

3

5

4

615

137

12

11

8

10

9

*Typ

e of

scre

w C

-Cap

Scr

ew M

—O

val F

illist

er-H

ead

Scre

wF'

-Fla

t Hea

d Sc

rew

N"-

Rou

nd H

ead

Scre

w S

-"Se

t Scr

ew

ENG

INE

PA

RTS

LIS

T

The

spec

ificat

ions a

re su

bject

to a

ltera

tion

for i

mpr

ovem

ent w

ithou

t noti

ce.

Man

ifold

Spr

ing

(2pc

s.)

Exha

ust M

anifo

ld fo

rT-M

axx

Revo

Exha

ust S

eal R

ing

(2pc

s.)

Glow

Plug

LC3

Scre

w S

etRe

ar Ad

aptor

Gas

ket S

etSt

artin

g Sh

aft

Cran

ksha

ftC

rank

shaf

t Ball

Bea

ring

(Rea

r)Cr

ankc

ase

Cra

nksh

aft B

all B

earin

g (F

ront

)C

arbu

reto

r R

etai

ner

Car

bure

tor C

ompl

ete

(Typ

e 11

K-R

)C

onne

ctin

g R

odPi

ston

Pin

Ret

aine

r (2p

cs.)

Pist

on P

inC

ylin

der &

Pis

ton

Asse

mbl

yIn

ner H

ead

Out

er H

ead

1 2 3 4 5 6 7 8 9

2191

4000

2191

4100

2191

3000

2181

6000

2181

7000

2191

5000

2198

2010

2538

1701

2373

1000

10 11 12 13 14

2191

1000

2193

1000

2191

2000

2192

2000

2182

4000

2191

1800

2192

3000

7165

3000

2142

7200

7210

3710

7210

6172

15 16

CARBURETOR EXPLODED VIEW

32

*s Type of screwC...Cap Screw M...0val Fillister-Head ScrewF...Flat Head Screw N...Round Head Screw S...Set Screw

2-1

2

2-2

33-1

45

1-11-2

1 6-1

10

9

8

S.M3X3

7

6

CARBURETOR PARTS LIST

The specifications are subject to alteration for improvement without notice.

33

Carburetor Rubber GasketThermo InsulatorThrottle Lever23818440

219829002261500010

987 21982520 Dust Cover

"0" Ring(S) (2pcs.)Metering Needle AssemblySlide ValveCarburetor Body (w/Thermo Insulator)

"0" Ring(S) (2pcs.)Throttle Stop Screw

No. 14 Universal Nipple Assembly

6-1 22781800219825406

5 219822002198210022781800

43-13 21982620

218819502-2"0" Ring (2pcs.)

Needle Valve Assembly"0" Ring(S) (2pcs.)"0" Ring(L) (2pcs.)

Mixture Control Valve Assembly21982600278818202278180021285901278818202-1

21-21-11

RACING ENGINE PARTSO.S. GENUINE PARTS & ACCESSORIES

O.S. Glow Plug

LC3(71653000)

Exhaust Seal Ring(2pcs.)

(21427200)

Manifold Spring (2pcs.)(72106172)

Long Socket WrenchWith Plug Grip(71521000)

34

The specifications are subject to alteration for improvement without notice.

Dust Cap Set3 (73300305)

For Carburetor Nipple7(73300712)

For Silencer

12(73301212)For Carburetor

THREE VIEW DRAWING

35

Dimensions (mm)

SPECIFICATIONS

3.0cc (0.183cu.in.)16.0mm (0.629in.)15.0mm (0.590m.)3,000-34,000 r.p.m.1.6ps/29,000 r.p.m.233g (8.22oz.)

DisplacementBoreStrokePractical R.P.M.Power outputWeight

GUARANTEED TOKEEP YOUR R/C CARRUNNING WELL

KEEP IT CLEANDirt is the most common way to ruin your engine. If it gets inside,the dirt will act just like sandpaper and ruin the close fit that theparts need for your engine to operate correctly• Use an air filter to keep as much dirt outside as possible.

A two or three stage filter with an oiled foam element is thebest way to go.

• Dirt on the outside of the engine acts just like a blanket ofinsulation and prevents proper cooling. Keep your engineclean.

• Use a fuel filter. Dirt getting Into the fuel will clog the fuelpassages in the carburetor and also get those abrasiveparticles inside. Keep your engine clean.

•Dirt will damage your engine very quickly and repairs for dirtare not covered by the engine manufacturer's warranty.

KEEP IT RICHThe high-speed needle valve is used to adjust the mixture of fueland air needed to get the optimum performance from your engine.If it's adjusted too lean, your engine will get less fuel than it should.•You must remember that the engine gets its lubrication from

the oil that's in the fuel. If you run it too lean, the engine willnot get enough oil to keep the internal parts lubricated, eventhought It sounds better.

• Parts will start to run hot and then seize. The result is atypical problem as a broken connecting rod that seized tothe crankshaft, and then broke as the crankshaft tried tocontinue to turn.

• Keep the engine running on the rich side of the highestRPM setting to ensure proper lubrication.

KEEP IT ON THE GROUNDYou should run your engine at high speeds only when you aredriving the car.• Do not put the car on the box or stand with the wheels off

the ground and then run the engine.You'll quickly overspeedyour engine and ruin It. Generally, the connecting rod willbreak from the over-revving.

• Do not remove the engine from the car and try to run it withjust the flyweel. That does the same as described above. Theengine must be run with the load of the car when driving.

36

KEEP IT COOLIf you run your engine good and hot, you'll have a nice chunck ofuseless aluminum in a short time.•Running the engine hot causes the oil in the fuel to break

down and quit working. The repairs won't be cheap.Your engine is equipped with a special heat-sink cylinder head tomake sure it gets enough cooling..•Keep the head clean so that the dirt doesn't act like an

insulating blanket.•Make sure that any airflow passes through the fins of the

cylinder and head.• Make as many cutouts in the car's body as necessary, and

don't skimp on the size.

KEEP IT LUBEDMake sure you're using a fuel from a reputable, name-brandmanufacturer.•Your fuel should have at least the amount of oil

recommended by the engine manufacturer. If you can't finda particular recommendation on oil content, then use a fuelwith 20%-22% oil content.

•If you're trying to run a fuel with more than 20%Nitromelhane, you should add some oil to your fuel, such asKlotzTechniplate™or Baker "AA" Castor Oil".

KEEP IT PROPERLYLUBED DURINGSTORAGEIf you let your engine sit with nothing done to it after you last ran it,the internal parts will start to corrode... especially the steelcrankshaft and ball bearings. They'll rust. If the fuel has castor oilin It, it will begin to dry out and become gummy.• Rust inside an engine will erode tight clearances and score

polished surfaces.• Gummy fuel residue blocks oil holes in connecting rods and

crankshafts.

37

GUARANTEED TOKEEP YOUR R/C CARRUNNING WELL

(Continued)

(CONTINUED)Here's how to prevent rust;• At the end of the day's running, pull the fuel line from the engine.• Drain the tank, and then start the engine.• Let it run until it's absolutely dry of fuel.

•Add several drops of an after-run oil. There are several after-runoils on the hobby market. You can also make your own from a 50-50 mixture of "Marvel Mystery Oil" and automatic transmissionfluid.

•After adding the after-run oil, turn the engine over several timesto make sure it's worked into all of the engine's internals. Addmore if you are not sure that you put in enough.

KEEP GOOD POWERNitro, or Nitromethane, is the main power ingredient in model fuels.Raising the nitro content will make the fuel "hotter"— that is, allowthe engine to develop more power. More is better, right? Not really.•Unless your engine is designed and ported for high-nitro

fuels, you won't see much gain in performance above 20%-25%.

•While some people are running nitro levels as high as 50%,they have modified their engines to handle it. They've alsocarefully blended their fuel to make sure they have enoughoil.

•The best performance enhancer Is a good driver, A driverwho can keep the car on the track will usually beat a lessexperienced driver with a hotter set up.

KEEP IT SMOOTHWhen you tighten the pilot shaft onto your flywheel, it can be hardto keep the engine from turning over. It may be tempting to sticksomething into the exhaust port to keep the piston from moving,but do not do this! You'll also put a nice "ding" in the piston and inthe cylinder liner. You've just ruined your nice, new engine. A newABC piston/cylinder assembly (the most commonly-used kind inR/C car engines) will put a nice hole In your pocketbook.

38

(CONTINUED)This kind of damage is not covered under the warranty.• If the flywheel can't be tightened onto the engine without it trying

to turn over, grip the drive washer in a pair of large adjustablepliers, like Channel Locks'", with the drive washer protectedunder several layers cloth. You could also try a strap wrench.

•If you feel more adventurous, you can remove the rear cover ofthe engine and insert a piece of wooden dowel stock or plasticrod to keep the crankshaft from turning. Don't put anything intothe engine that will hit the piston.

KEEP AWAY FROMSILICONE SEAL ANDTHREAD STICKERSSilicone sealers usually have a smell like vinegar when they'recuring. Vinegar is mostly acetic acid and that causes corrosion.•The inside of an engine has two kinds of metal in it...

aluminum for most of the parts and steel for the crankshaftand bearings.

•Two different kinds of metal will start to corrode if they havesome kind of electrolyte between them and a tiny bit of acidwill do the job.

• Aluminum corrosion can cause the entire inside of theengine to turn a dark grey or nearly black color. Corrodedsteel is rust. See above about rust.

KEEP IT DRYWhile it sounds obvious, keeping water out of your engine isn't aseasy as it sounds. Sure, you can dry it out when you've runthrough some mud or puddles, but how about condensation?

•Changes in temperature can cause moisture in the air tocondense inside the engine. This can happen in the winterand summer, so keep your model inside the house, not in thegarage.

• Keeping it Inside the house also gives you good reason tokeep it clean just try to explain oil spots on the carpet whenyour engine is dripping oil from a just-finished runningsession.

© Copyright 1999-3032046

39

40

LIMITED WARRANTY

Your engine is guaranteed to be free of defects in parts and workmanship for a period of 2 yearsfrom the date of purchase when returned for service accompanied by Your proof of purchase.Crash damage and problems caused by neglect or abuse will not be covered under warranty.Damagecaused by customer disassembly, tampering, use of substandard fuel, use of incorrectaccessories (glow plug, prop, etc.) ,or any use of the engine for which it is not specifically intendedwill automatically void the warranty of the engine.Should your engine require warranty or non-warranty service please return it via UPS orinsured Parcel Post to our national servicing facility:Hobby ServicesP.O.Box 40211610 Interstate Dr.Champaign IL 61821Ph. 217-398-0007Along with Your engine and proof of purchase date please enclose a complete written explanationdetailing the problems. State your name and address clearly.For repairs not covered under warranty, you must specify whether you wish the charges tobe billed C.O.D. or if you wish to be notified of the charges so you can send a check.

6-15 3-Chome Imagawa Higashisumiyoshi-kuOsaka 546-0003, Japan TEL. (06) 6702-0225

FAX. (06) 6704-2722URL: http://www.os-engines.co.jp

© Copyright 2004 by O.S.Engines Mfg. Co., Ltd. All rights reserved. Printed in Japan. 60091540 090400