MAX-18TM W/11K-R & T-Maxx Revo Manifold

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MAX-18TMw/11K-R & T-Maxx Revo ManifoldOWNER'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.

CONTENTSFINALSAFETY INSTRUCTIONS ANDWARNINGS ABOUT YOUR O.S. ENGINE. 2-5ADJUSTMENT . 20-22CARBURETOR CLEANLINESS . 22ENGINE CONSTRUCTION. 6CARE AND MAINTENANCE . 23-24NOTES WHEN APPLYING AN ELECTRICSTARTER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7CHECKING THE ENGINE . 25ABOUT THE ENGINE . 8TROUBLE SHOOTING . 26-29BEFORE STARTING . 8-10ENGINE EXPLODED VIEW & PARTS LIST. 30-31BASIC ENGINE PARTS . 10CARBURETOR EXPLODED VIEW &PARTS L I S T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 - 3 3CARBURETOR CONTROLS . 11O.S. GENUINE PARTS & ACCESSORIES . 34FACTS ABOUT GLOWPLUG .12THREE VIEW DRAWING . 35INSTALLATION OF THE CARBURETOR . 13INSTALLATION .13-16GUARANTEED TO KEEP YOURR/C CAR RUNNING WELL . 36-39STARTING THE ENGINE & RUNNING-IN .17-19LIMITED WARRANTY. 411

SAFETY INSTRUCTIONS AND WARNINGS ABOUTYOUR O.S. ENGINERemember that your engine is not a "toy", but a highly efficient internalcombustion 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.NOTESWARNINGSThese cover the many otherpossibilities, generally less obvioussources of danger, but which, undercertain circumstances, may alsocause damage or injury.These cover events whichmight involve serious (inextreme circumstances, evenfatal) injury.2

WARNINGS Never operate your engine in an enclosed space. Model engines, likeautomobile engines, exhaust deadlycarbon-monoxide. Run your engineonly in an open area. Model engine fuel is poisonous. Do not allow it tocome into contact with theeyes or mouth. Always storeit in a clearly marked container and out of the reachof children. 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. 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.3

NOTESThis engine is intended for model cars.Do not attempt to use it for any otherpurpose.The wearing of safety glasses is alsostrongly recommended.Mount the engine in your modelsecurely, following the manufacturers'recommendations, using appropriatescrews and locknuts.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.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.4

NOTESTake care that the glowplug clip orbattery leads do not come into contactwith rotating parts. Also check that thelinkage to the throttle arm is secure.Warning! Immediately after a glowplugignition 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.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.5

Near TDCENGINE CONSTRUCTIONWith this engine, the piston willfeel tight at the top of its stroke(TDC) when the engine is cold.PistonCylinder LinerThis is normal. The cylinder borehas a slight taper. The pistonand cylinder are designed toCrankshaftachieve a perfect runningclearance when they reachSlight taperoperating temperature.When the engine is cold. When the engine-is hot.6

NOTES WHEN APPLYINGAN ELECTRIC STARTERDo 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 ENGINEBEFORE STARTINGThis engine is designed especially to power the TMaxx 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.Tools, 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."T-Maxx Revo" is a trademark of Traxxas Corp.Standard accessoriesGlow Plug LC3Exhaust Seal Ring 1 pieceExhaust Manifold for T-Maxx Revo8

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

TOOLSHEX WRENCHNecessary for engine installation.1.5mm, 2mm, 2.5mm, 3mmBASIC ENGINE PARTSHeatsinkHeadCarburetorType 11 K-RSCREWDRIVERNecessary for carburetor adjustments.No-1, No.2,etcExhaustLONG SOCKET WRENCH WITH PLUG GRIPRecommended for easy removal andreplacement of the angled and recessedglowplug, the O.S.Long Socket Wrenchincorporates a special grip.Rear AdaptorMounting LugsCrankcaseCrankshaft10

CARBURETOR CONTROLSFour adjustable controls are provided onthis carburetor.The Needle-Valve;For adjusting the mixture strength when thethrottle is fully open.Needle ValveThe 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 partthrottle and idling speeds, to obtain steadyidling and smooth acceleration to midspeeds.The Throttle Stop Screw:For setting the minimum idle speed:Mixture Control ValveThrottle StopScrewThermo InsulatorMetering NeedleNOTE: 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.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.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.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.Glowplug lifeStarting qualities deteriorate.Particularly in the case of very high performanceengines, glowplugs must be regarded as expendableitems.12

INSTALLATIONInstall 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.Fill the tank completely with fuel.Temporarily remove the glowplug to checkthat it glows bright red when energized.Element glows when energized.PliersThe 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.Replace the plug when theelement does not glow or isburnt out.Glow Plug IgniterNever run your vehicle without installing theair cleaner. Dust and dirt that may otherwisebe drawn into the engine will rapidly shortenits life.17

The carburetor of this engine is set at startingsetting when the engine leaves the factory.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 overrich, 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 .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.The position of the needle-valvewhen starting the engine.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.NeedleClose the needle-valve approx.30 deg after running the vehicleevery one full tank of fuel.Repeat this procedure aroundfive times.18

Note:Warning!Do not touch rotating parts, engine and silencer when stopping the engine as theybecome very hot, and contact with themmay result in a serious burn.If the engine should need to be disassembled (e.g. for cleaning or minor parts replacement), it is advisable to return the needle-valve to the original rich, starting setting 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.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.Fuel19

FINAL ADJUSTMENTFinal adjustment should be carried out only afterthe running-in has been completed.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 NeedleValve 30 and repeat the run, taking note ofthe improvement in performance.Needle ValveContinue 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.Metering NeedleThrottle Stop ScrewOpenCloseMore fuelLess fuelMetering NeedleOpenCloseMore fuelLess fuelNeedle Valve20

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 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.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.Carry out adjustments patiently, under actualrunning conditions, until the engine respondsquickly and positively to the throttle control.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.Carburetor BodySlide ValveThrottle LeverRotate the MeteringNeedle until its slottedhead is flush with theThrottle Lever body.This is the standardposition.Metering NeedleThe correct functioning of the carburetordepends on its small fuel orifices remainingclear.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.REALIGNMENT OF METERING NEEDLE ANDMIXTURE CONTROL VALVEIn 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 adjustmentMixture Control ValveCarburetor Bodyrange.The basic positions can be found by rotatingthe Metering Needle until its slotted head isflush with the Throttle Lever body.22

CARE AND MAINTENANCE1 .The minute particles of foreign matter, thatare 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.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.2. Do not forget to clean the filters regularly toremove dirt and lint that accumulate on thefilter screens. Also, clean the carburetor itselfoccasionally.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.Dirt and dust may lodge inCaution: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.Installing Dust CapsWhen storing the engine, install the cap onthe exhaust port, carburetor, etc. to preventdust from entering the engine.24marked places.

CHECKING THE ENGINEEngine will not develop normal perfor

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