Troy-Bilt 4 Cycle Trimmer Repair Manual
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ROCKERARMCLEARANCE Thisrequiresdisassemblyoftheengine.Ifyoufeel unsureorunqualifiedtoperformthis,taketheunittoan authorizedservicecenter. NOTE:Inspectthevalvetorockerarmclearancewitha feelergaugeafterthefirst10hoursofoperation andthenevery25hoursofoperationthereafter. •Theenginemustbecoldwhencheckingoradjusting thevalveclearance. •Thistaskshouldbeperformedinside,inaclean,dust freearea. 1. Removethemufflercoverbypressingdownonthe cornerwithaflatbladescrewdriver(Fig.36).Slide...
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. Slidethefeelergaugebetweentherockerarmand thevalvereturnspring.Measuretheclearance betweenthevalvestemandrockerarm(Fig.40). Dobothintakeandexhaustvalves. RockerArms Nuts / / FeelerGauge Gasket Fig.40 Therecommendedclearanceforbothintakeand exhaustis.003-.008in.(.078-0.152mm).Usea standardautomotive.005in.(0.127mm)feelergauge. Thefeelergaugeshouldslidebetweentherockerarm andvalvestemwithaslightamountofresistance, withoutbinding(Fig.41). 10.Iftheclearanceisnotwithinspecification:...
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REPLACINGTHESPARKPLUG UseonlyChampionRDZ19Hsparkplugorequivalent. Thecorrectairgapis0.025in.(0.655mm.).Removethe plugafterevery25hoursofoperationandcheckits condition. 1.Stoptheengineandallowittocool.Grasptheplug wirefirmlyandpullthecapfromthesparkplug. 2.Cleandirtfromaroundthesparkplug.Removethe sparkplugfromthecylinderheadbyturninga5/8in. socketcounterclockwise. 3.Replacecracked,fouledordirtysparkplug.Setthe airgapat0.025in.(0.655mm.)usingafeelergauge (Fig.42). SPARKARRESTORMAINTENANCE...
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CLEANING ,_WARNING:Toavoidseriouspersonalinjury, alwaysturnyourtrimmeroffandallowitto coolbeforeyoucleanordoanymaintenance onit. Useasmallbrushtocleanofftheoutsideoftheunit.Do notusestrongdetergents.Householdcleanersthat containaromaticoilssuchaspineandlemon,andsuch askerosene,candamageplastichousingorhandle. Wipeoffanymoisturewithasoftcloth. STORAGE Neverstoretheunitwithgasolineinthetankwhere fumesmayreachanopenflameorspark. Allowtheenginetocoolbeforestoring....
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CAUSE IgnitionswitchisOFF Emptyfueltank Primerbulbwasntpressedenough Engineflooded OldGasoline Fouledsparkplug CAUSE AirFilterisPlugged OldGasoline Impropercarburetoradjustment CAUSE OldGasoline Impropercarburetoradjustment Cuttingheadboundwithgrass Dirtyairfilter CloggedSparkArrestorScreen CAUSE OldGasoline Impropercarburetoradjustment CloggedSparkArrestorScreen CAUSE Cuttingheadboundwithgrass Cuttingheadoutofline Innerreelboundup Cuttingheaddirty Linewelded...
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ENGINE EngineType.................................................................Air-Cooled,4-Cycle Displacement.................................................................1.6cu.in.(26.2cc) ClutchType.........................................................................Centrifugal OperatingRPM.................................................................7,200-8,300rpm IdleSpeedRPM.................................................................3,000-4,500rpm...
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PartNumbersOnFollowingPage @ @ @ @ ENGINEPARTS-MODELTB475SS 4-CYCLEGASTRIMMER (ppn-41ADT47C063)(SerialNumber011......andgreater) ® ® @ @ Reissued12/0127
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ENGINEPARTS-MODELTB475SS 4-CYCLEGASTRIMMER (ppn-41ADT47C063)(SerialNumber011.........andgreater) ItemPartNO..DescriptionItemPartNO.Description 179%182338EngineCover47791-181247Palnut 279%182339EngineCoverScrews48753-1199RecoilPulley 379%181025ValveCoverScrew49791-613102RecoilSpring 479%182098ValveCover50791-182366NutClip 579%182099ValveCoverGasket51791-181079PullHandle 6791-182340RockerAdjustmentNut52791-611061RopeGuide 779%182101RockerArmPivot53791-613103Rope...
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BOOMANDTRIMMERPARTS-MODELTB475SS 4-CYCLEGASTRIMMER (ppn-41ADT47C063)(SerialNumber011.........andgreater) ItemPartNo. 1753-1211 2791-OO042 3791-182690 4791-182673 5791-180869 6791-181070 7791-182167 8791-182168 9753-1247 10753-1190 11791-182057 12791-181617 13791-181981 14791-181886 15791-182388 16791-181166 17791-153597 18791-145669 19791-180647 20791-180548 21791-180553 22791-18064£ 23791-153619 24791-610660 25791-610317B 26753-1155 27791-153066B 28791-610327...
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