Troy-Bilt 4 Cycle Trimmer Repair Manual
Have a look at the manual Troy-Bilt 4 Cycle Trimmer Repair Manual online for free. It’s possible to download the document as PDF or print. UserManuals.tech offer 8 Troy-Bilt manuals and user’s guides for free. Share the user manual or guide on Facebook, Twitter or Google+.
![Page 14
DECORATIVETRIMMING
Decorativetrimmingisaccomplishedbyremovingall
vegetationaroundtrees,posts,fences,etc.
Rotatethewholeunitsothatthecuttingattachmentisat
a30°angletotheground(Fig.15).
\
\
Fig.15
NOTE:Somemaintenanceproceduresmayrequire
specialtoolsorskills.Ifyouareunsureabout
theseprocedurestakeyourunittoanauthorized
servicedealer.
MAINTENANCESCHEDULE
Theserequiredmaintenanceproceduresshouldbe
performedatthefrequencystatedinthetable.They
shouldalsobeincludedaspartofanyseasonaltune-up....](http://img.usermanuals.tech/thumb/79/93644/w64_d_1504183727-troy-bilt-4-cycle-trimmer-repair-manual_d-13.png "Page 14
DECORATIVETRIMMING
Decorativetrimmingisaccomplishedbyremovingall
vegetationaroundtrees,posts,fences,etc.
Rotatethewholeunitsothatthecuttingattachmentisat
a30°angletotheground(Fig.15).
\
\
Fig.15
NOTE:Somemaintenanceproceduresmayrequire
specialtoolsorskills.Ifyouareunsureabout
theseprocedurestakeyourunittoanauthorized
servicedealer.
MAINTENANCESCHEDULE
Theserequiredmaintenanceproceduresshouldbe
performedatthefrequencystatedinthetable.They
shouldalsobeincludedaspartofanyseasonaltune-up....")
STARTINGINSTRUCTIONS ColdStart-FirstStartoftheDayorEngineRanOut ofFuel ,_WARNING:Operatethisunitonlyinawell ventilatedareaoutdoors.Carbonmonoxide exhaustfumescanbelethalinaconfined area, 1.Checkoillevelincrankcase.SeeCheckingtheOil Level. 2.Fillthefueltankwithfresh,clean,unleadedgasoline (seepage10). 3.PuttheStart/StopEngineControlintheSTARTill position.(Fi9.7) On/OffStopControl Fig.7 4.PlacethechokeleverintheFULLchoke(A)I_ position(Fig.8). NOTE:Slidethechokeleverdirectlyabovethe appropriatesymbolonairfiltercoverdecal (Fig.8). 5.Fullypressandreleasetheprimerbulbslowly7 times.Gasolineshouldbefeltandvisibleinthebulb (Fig.8).Ifgasolinehasnotenteredthebulb,press threemoretimes,oruntilitdoes. ChokeLever PrimerBulb Fig,8 6.Squeezethethrottlecontroltothewideopen (fullthrottle)position. 7.Withtheunitinthestartingposition(Fig.9)pullthe starterropebriskly5timesintheFULLchoke(A)a position.Iftheengineattemptstorunbeforethefifth pull,proceedtostep8. 8.MovethechokelevertothePARTIAL(B)I,1position (Fig.8). NOTE:TheenginewillnotrunintheFULLchoke(A)H position. 9.Pullthestarterrope1to3pullsuntiltheengine starts.Runfor15-30seconds.Iftheunitfailstostart returntostep7. 10.MovethechokelevertotheRUN(C)141positionand runatfullthrottlefor30seconds. I,_ARNING:Avoidaccidentalstarting.Bein thestartingpositionwheneverpullingthe startingrope.Toavoidseriouspersonal injury,theoperatorandunitmustbeina stablepositionwhilestarting. StartmRope ThrottleControl Fig.9 11.Releasethethrottlecontroltotheidlepositionand beginoperation. NOTE:Iftheenginedoesnotstartusingthese procedures,repeatsteps5through11using TWO(2)pullsintheFULLchoke(A)position. EngineRe-Start-WarmEngineWithFuel 1.PuttheStart/StopEngineControlintheSTART[I] position(Fig.7). 2.MovethechokelevertothePARTIAL(13)position (Fig.8). 3.Fullypressandreleasetheprimerbulbslowly7 times.Gasolineshouldbefeltandvisibleinthebulb (Fig.8).Ifgasolinehasnotenteredthebulb,press threemoretimes,oruntilitdoes. 4.Squeezethethrottlecontroltothewideopen(full throttle)position. 5.Withtheunitinthestartingposition(Fig.9),pullthe starterropebrisklyuntiltheenginestarts. 6.Whentheenginestarts,movethechokelevertothe RUN(C)position,andrunatfullthrottlefor30 seconds. NOTE:IftheenginedoesnotstartusingtheEngine Re-startprocedures,reverttotheColdStart procedures. NOTE: 4-strokeengines,likecars,areabletostartinthe idleposition.Asanalternatemethod,youmay wanttostartyourunitintheidlepositionwhen theunitiswarm.WiththeStart/Stopcontrolin theSTARTposition,pullthestarterropebriskly. Whentheenginestarts,runatfullthrottlefor30 seconds.Iftheunitfailstostartordies,revertto theEngineRe-Startprocedure. STOPPINGINSTRUCTIONS 1.Releaseyourhandfromthethrottlecontrol(Fig.9). Allowtheenginetoidle. 2.Tostoptheengine,puttheStart/StopEngine ControlintheSTOP[O]position(Fig.7). 11
/ OPERATINGTHEEZ-LINKTMSYSTEM TheEZ-LinkrMsystemenablestheuseofthese optionaladd-ons. Blower/Vacuum..........................BV720r Cultivator..............................GC720r Edger..................................LE720r HedgeTrimmer..........................HS720r SnowThrower...........................ST720r StraightShaftTrimmer....................SS725r Sweeper/Blower.........................SB720r TreePruner.............................TP720r TurboBlower............................TB720r _iWARNING:Readandunderstandoperators manualforadd-onpriortooperation. RemovingtheCuttingAttachmentorAdd-Ons: 1.Turntheknobcounterclockwisetoloosen(Fig.10). 2.Pressandholdthereleasebutton(Fig.10). 3.Whilefirmlyholdingtheuppershafthousing,pull thecuttingattachmentoradd-onstraightoutofthe EZ-LinkrM_coupler(Fig.10). InstallingtheCuttingAttachmentorAdd-Ons: ,_WARNING:Toavoidseriouspersonalinjury anddamagetotheunit,shutunitoffbefore removingorinstallingadd-ons. NOTE:Tomakeinstallingorremovingtheadd-on easier,placetheunitonthegroundoronawork bench. 1.Turnknobcounterclockwisetoloosen(Fig.10). EZ:LinkTMcouplerReleaseButton \ GuideRecess Fig.10 2.Whilefirmlyholdingtheadd-on,pushitstraightinto theEZ-LinkTMcoupler(Fig.11). NOTE:Aligningthereleasebuttonwiththeguiderecess willhelpinstallation(Fig.11). ReleaseButton EZ-LinkTMCoupler Hole UpperShaftHousing/ LowerShaftHouSing Fig.11 3.Turntheknobclockwisetotighten(Fig.12). iAC OTO°: ock hereeo e0uttooo hei primaryholeandsecurelytightentheknob beforeoperatingthisunit. A 90EdgingHole 180EdgingHole Fig.12 l&AUTION:Thecuttingattachmentand add-onswiththeEZ-LinkTMsystemaretobe usedintheprimaryholeunlessstated otherwiseinthespecificadd-onsoperators manual.Usingthewrongholecouldleadto personalinjury,ordamagetotheunit. Foredgingwhenusingthelineheadcuttingattachment withEZ-LinkTMmodels,lockthereleasebuttonofthe cuttingattachmentintothe90°edgingholeorthe180° edginghole(Fig.12). 12
L1 HOLDINGTHETRIMMER I_bARNING:Alwaysweareye,hearing,foot andbodyprotectiontoreducetheriskof injurywhenoperatingthisunit. Beforeoperatingtheunit,standintheoperatingposition (Fig.13).Checkforthefollowing: Theoperatoriswearingeyeprotectionandproper clothing. Therightarmisslightlybent,andthehandisholding theshaftgrip. Theleftarmisstraight,andthehandisholdingthe D-handle. Fig.13 Theunitisatwaistlevel. Thecuttingattachmentisparalleltothegroundand ispositionedsodebrisisblownawayfromoperator. ADJUSTINGTRIMMINGLINELENGTH TheBumpHeadTMcuttingattachmentallowsyouto releasetrimminglinewithoutstoppingtheengine.To releasemoreline,lightlytapthecuttingattachmenton theground(Fig.14)whileoperatingthetrimmerathigh speed. NOTE:Alwayskeepthetrimminglinefullyextended. Linereleasebecomesmoredifficultascutting linebecomesshorter Eachtimetheheadisbumped,about1inch(25.4mm.) oftrimminglineisreleased.Abladeinthecutting attachmentshieldwillcutthelinetotheproperlengthif excesslineisreleased. Forbestresults,taptheBumpHeadTMonbareground orhardsoil.Iflinereleaseisattemptedintallgrass,the enginemaystall.Alwayskeepthetrimminglinefully extended.Linereleasebecomesmoredifficultasthe cuttinglinebecomesshorter. NOTE:DonotresttheBumpHeadTMontheground whiletheunitisrunning. i_AUTION:Donotremoveoraltertheline cuttingbladeassembly.Excessivelinelength willmaketheclutchoverheat.Thismaylead toseriouspersonalinjuryordamagetothe unit. Somelinebreakagewilloccurfrom: Entanglementwithforeignmatter Normallinefatigue Attemptingtocutthick,stalkyweeds Forcingthelineintoobjectssuchaswallsorfence posts TIPSFORBESTTRIMMINGRESULTS Keepthecuttingattachmentparalleltotheground. Donotforcethecuttingattachment.Allowthetipof thelinetodothecutting,especiallyalongwalls. Cuttingwithmorethanthetipwillreducecutting efficiencyandmayoverloadtheengine. Cutgrassover8inches(200mm)byworkingfrom toptobottominsmallincrementstoavoid prematurelinewearorenginedrag. Cutfromlefttorightwheneverpossible.Cuttingto therightimprovestheunitscuttingefficiency. Clippingsarethrownawayfromtheoperator. Slowlymovethetrimmerintoandoutofthecutting areaatthedesiredheight.Moveeitherinaforward- backwardorside-to-sidemotion.Cuttingshorter lengthsproducesthebestresults. Trimonlywhengrassandweedsaredry. Thelifeofyourcuttinglineisdependentupon; Followingtheprevioustrimmingtechniques Whatvegetationisbeingcut Whereitsbeingcut Forexample,thelinewillwearfasterwhentrimming againstafoundationwallasopposedtotrimming aroundatree. Fig.14 13
DECORATIVETRIMMING Decorativetrimmingisaccomplishedbyremovingall vegetationaroundtrees,posts,fences,etc. Rotatethewholeunitsothatthecuttingattachmentisat a30°angletotheground(Fig.15). \ \ Fig.15 NOTE:Somemaintenanceproceduresmayrequire specialtoolsorskills.Ifyouareunsureabout theseprocedurestakeyourunittoanauthorized servicedealer. MAINTENANCESCHEDULE Theserequiredmaintenanceproceduresshouldbe performedatthefrequencystatedinthetable.They shouldalsobeincludedaspartofanyseasonaltune-up. WARNING:Topreventseriousinjury,never1 domaintenanceorrepairswithunitrunning. J Alwaysdomaintenanceandrepairsona coolunit.Disconnectsparkplugwireto ensuretheunitwillnotstart. FREQUENCY BeforeStartingEngine Every10Hours 1stChangeat10Hours Every25Hoursthereafter Every25Hours 10hoursonnewengine Every25Hours Every25Hours MAINTENANCEREQUIRED Fillfueltankwithfreshfuel Checkoil Cleanandre-oilairfilter. Changeoil Changeoil CleanSparkArrestor Checkrockerarmtovalveclearanceandadjustas required Checkrockerarmtovalveclearanceandadjustas required Checksparkplugconditionandgap REFERTO: Page10 Page17 Page19 Page17 Page17 Page23 Page22 Page22 Page23 14
LINEINSTALLATION ThissectioncoversbothMembranelineandstandard singlelineinstallation. Alwaysusemanufacturers0.095inch(2.41mm) replacementline.Usinglineotherthanspecifiedmay maketheengineoverheatorfail. I,_ARNING:Neverusemetal-reinforcedline, wire,chain,orrope,etc.Thesecanbreakoff andbecomedangerousprojectiles. ndexngTeeth BumpKnob / / / Bolt f / / Fig.16 Therearetwomethodstoreplacethetrimmingline. •Windtheinnerreelwithnewline •Installaprewoundinnerreel WindingtheExistingInnerReel 1.Holdtheouterspoolwithonehandandunscrewthe bumpknobcounterclockwise(Fig.16).Inspectthe boltinsidethebumpknobtomakesureitmoves freely.Replacethebumpknobifdamaged. 2.Removetheinnerreelfromtheouterspool(Fig.17). 3.Removespringfromtheinnerreel(Fig.17). 4.Useacleanclothtocleantheinnerreel,spring, shaft,andinnersurfaceoftheouterspool. 5.Checktheindexingteethontheinnerreelandouter spoolforwear(Fig.18).Ifnecessary,removeburrsor replacethereelandspool. OuterSpool InnerReel ShaE Spring Fig.17 Fig.18 NOTE:Membranelinecanonlybeusedwiththe innerreelwiththeslottedholes.Singlelinecanbe usedoneithertypeofinnerreel.UseFigure18to identifytheinnerreelyouhave. NOTE:Alwaysusethecorrectlinelengthwhen installingtrimminglineontheunit.Thelinemaynot releaseproperlyifthelineistoolong. ForUsewithForUsewithMembrane SingleLineONLYorSingleLine / SlottedHoles Fig.19 SingleLineInstallation GoToStep8forMembraneLineInstallation 6.Takeapproximately20feet(6.1m)ofnewtrimming line,loopitintotwoequallengths.Inserteachendof thelinethroughoneofthetwoholesintheinnerreel (Fig.20).Pullthelinethroughtheinnerreelsothat theloopisassmallaspossible. \ Loop Fig.20 15
7.Windthelinesintightevenlayers,ontothereel (Fig.21).Windthelineinthedirectionindicatedon theinnerreel.Placeyourindexfingerbetweenthe twolinestostopthelinesfromoverlapping.Donot overlaptheendsoftheline.Proceedtostep11. Fig.21 MembraneLineInstallation 8.Takeapproximately10feet(3m)ofnewtrimming line.Insertoneendofthelinethroughoneofthetwo holesintheinnerreel(Fig.21).Pullthelinethrough theinnerreeluntilonlyabout4inchesisleftout. 9.Inserttheendofthelineintotheopenholeinthe innerreelandpullthelinetighttomaketheloopas smallaspossible(Fig.22). Loop Fig.22 10.Beforewinding,splitthelinebackabout6inches (15cm). 11.Windthelineintightevenlayersinthedirection indicatedontheinnerreel. NOTE:Failuretowindthelineinthedirection indicatedwillcausethecuttingattachmentto operateincorrectly. 12.Inserttheendsofthelineintothetwoholdingslots (Fig.23). 13.Inserttheendsofthelinethroughtheeyeletsinthe outerspoolandplaceinnerreelwithspringinsidethe outerspool(Fig.24).Pushtheinnerreelandouter spooltogether.Whileholdingtheinnerreelandouter spool,grasptheendsandpullfirmlytoreleasethe linefromtheholdingslotsinthereel. NOTE:Thespringmustbeassembledontheinner reelbeforereassemblingthecuttingattachment. 14.Holdtheinnerreelinplaceandinstallthebumpknob byturningclockwise.Tightensecurely. HoldingSlots Fig.23 Fig.24 INSTALLINGAPREWOUNDREEL 1.Holdtheouterspoolwithonehandandunscrewthe bumpknobcounterclockwise(Fig.16).Inspectthe boltinsidethebumpknobtomakesureitmoves freely.Replacethebumpknobifdamaged. 2.Removetheoldinnerreelfromtheouterspool (Fig.17). 3.Removethespringfromtheoldinnerreel (Fig.17).Useacleanclothtocleanthespring,shaft, andinnersurfaceoftheouterspool. 4.Placethespringinthenewinnerreel. NOTE:Thespringmustbeassembledontheinner reelbeforereassemblingthecuttingattachment. 5.Inserttheendsofthelinethroughtheeyeletsinthe outerspool(Fig.24). 6.Placethenewinnerreelinsidetheouterspool.Push theinnerreelandouterspooltogether.Whileholding theinnerreelandouterspool,grasptheendsand pullfirmlytoreleasethelinefromtheholdingslotsin thespool. 7.Holdtheinnerreelinplaceandinstallthebumpknob byturningclockwise.Tightensecurely. ReplacementParts: SeeAccessories/ReplacementParts. 16
CHECKINGTHEOILLEVEL CAUTION:Topreventextensiveenginewear anddamagetotheunit,alwaysmaintainthe properoillevelinthecrankcase.Never operatetheunitwiththeoillevelbelowthe bottomofthedipstick. Theimportanceofcheckingandmaintainingtheproper oillevelinthecrankcasecannotbeoveremphasized. Checkoilbeforeeachuse: 1.Stopengineandallowoiltodrainintothecrankcase. 2.Placetheunitonaflat,levelsurfacetogetaproper oillevelreading. 3.Keepdirt,grassclippings,etc.,outoftheengine. Cleantheareaaroundtheoilfillplug/dipstickbefore removingit. 4.Removetheoilfillplug/dipstickandwipeoffoil. Reinsertitallthewaybackin. 5.Removetheoilfillplug/dipstickandcheckoillevel. Oilshouldbeuptothetopofthedipstick(Fig.25). OilFillPlug/Dipstick\ O-Ring Add1.4-1.5Oz. (41-44ml) TopofDipstick , Fig.25 Ifthelevelislow,addasmallamountofoiltotheoil fillholeandrecheck(Fig.28).Repeatuntiltheoil levelreachesthetopofthedipstick. NOTE:Donotoverfilltheunit. O-Ring OilFillPlug/Dipstickf\ OilFillHole/ Fig.26 NOTE:MakesuretheO-ringisinplaceontheoilfill plug/dipstickwhencheckingandchangingthe oil(Fig.26). CHANGINGTHEOIL Foranewengine,changetheoilafterthefirst10hours ofoperation.Changetheoilwhiletheengineisstill warm.Theoilwillflowfreelyandcarryawaymore impurities. i_lbAUTION:Wearglovestopreventinjury whenhandlingtheunit. 1.Unplugsparkplugboottoeliminatestarting 2.Removetheoilfillplug/dipstick. 3.Pourtheoiloutoftheoilfillholeandintoacontainer bytippingtheunittoaverticalposition(Fig.27). Allowampletimeforcompletedrainage. 4. 5. Fig.27 Wipeupanyoilresidueontheunitandcleanupany oilthatmayhavespilled.Disposeoftheoil accordingtoFederal,Stateandlocalregulations. Refillthecrankcasewith3.4fluidounce(100ml)of SAE30SF,SG,SHoil. NOTE:Usethebottleandspoutsavedfrominitialuseto measurethecorrectamount.3.4ounce(100ml) isapproximatelytothetopofthelabelonthe bottle(Fig.28).Checkthelevelwiththedipstick. Ifthelevelislow,addasmallamountofoiland recheck(Fig.29).Donotoverfill.(Fig.29) OI_mF.mlLT 4-_deMotorOil FillLevel Fig.28 6.Replacetheoilfillplug/dipstick. 7.Reconnectsparkplugboot. 17
DANGER:OVERFILLINGOILCRANKCASE MAYCAUSESERIOUSPERSONALINJURY! Theimportanceofcheckingandmaintaining theproperoillevelinthecrankcasecannot beoveremphasized.Checkoilbeforeeach useandchangeasneeded.SeeChanging theOil. Fig.29 18
AIRFILTERMAINTENANCE CleaningtheAirFilter [,_ARNING:TOavoidseriouspersonalinjury, alwaysturnyourtrimmeroffandallowitto coolbeforeyoucleanordoanymaintenance onit. Cleanandre-oiltheairfilterevery10hoursofoperation. Itisanimportantitemtomaintain.Notmaintainingthe airfilterwillVOIDthewarranty. 1.Opentheairfiltercover.Pushthetabontheright sideofthecoverin,pulltheairfiltercoveroutandto theleft(Fig.30). NOTE:Itmaybenecessarytoremovethefuelcapto completelyremovetheairfiltercover 2.Removetheairfilter(Fig.30). ChokeLever AirFilter_\/_._ Cover Tab \ Fig.30 3.Washthefilterindetergentandwater(Fig31LRinse Lhefilterthoroughlyandallowittodry. Fig,31 4.ApplyenoughcleanSAE30motoroiltolightlycoat thefilter(Fig.32). . Fig.32 Squeezethefiltertospreadandremoveexcessoil (Fig.33). /, Fig.33 6.Replacethefilter(Fig.34). NOTE:iftheunitisoperatedwithouttheairfilter,you willVOIDthewarranty. BackPlate \ BackPlateSlot Slots Fig.34 7.Reinstalltheairfiltercover.Positionthehookson theleftsideoftheairfiltercoverintotheslotsatthe leftsideofthebackplate(Fig.34). NOTE:Itmaybenecessarytoremovethefuelcapto reinstalltheairfiltercover 8.Swingthecovertotherightuntilthetabontheair filtercoversnapsintoplaceintheslotontheback plate(Fig.34). 9.Replacethefuelcap,ifremoved. 19
CARBURETORADJUSTMENT Theidlespeedoftheengineisadjustable.Anidle adjustmentscrewisreachedthoughaholeinthetopof theenginecover(Fig.35). NOTE:Carelessadjustmentscanseriouslydamageyour unit.Anauthorizedservicedealershouldmake carburetoradjustments. CheckFuel Oldfuelisusuallythemainreasonfortheunitnot runningproperly.Drainandrefillthetankwithclean, freshunleadedfuelpriortodoinganyadjustments.Refer toOilandFuelInformation. CleanAirFilter Theconditionoftheairfilterisimportanttothe operationoftheunit.Adirtyairfilterwillrestrictairflow andchangetheair/fuelmixture.Thisisoftenmistaken foranoutofadjustmentcarburetor.Checkthecondition oftheairfilterbeforeadjustingtheidlespeedscrew. RefertoAirFilterMaintenance. AdjustIdleSpeedScrew _lbARNING:Thecuttingattachmentmaybe spinningduringidlespeedadjustment.Wear protectiveclothingandobserveallsafety instructionstopreventseriouspersonal injury. Ifaftercheckingthefuelandcleaningtheair filtertheenginestillwillnotidle,adjusttheidlespeed screwasfollows. 1.Starttheengineandletitrunatahighidlefora minutetowarmup. 2. Releasethethrottletriggerandlettheengineidle.If theenginestops,insertasmallphillipsorflatblade screwdriverintotheholeintheenginecover (Fig.35).Turntheidlespeedscrewin,clockwise, 1/8ofaturnatatime(asneeded)untiltheengine idlessmoothly. NOTE:Thecuttingattachmentshouldnotrotatewhen theengineidles. jIdleAdjustmentScrew J Fig.35 3.Ifthecuttingattachmentrotateswhentheengine idles,turntheidlespeedscrewcounterclockwise1/8 ofaturnatatime(asneeded),toreduceidlespeed. Checkingthefuel,cleaningtheairfilter,andadjusting theidlespeedscrewshouldsolvemostengine problems. Ifnotand: Theenginewillnotidle, Theenginehesitatesorstallsonacceleration, Thereisalossofenginepower, havethecarburetoradjustedbyanauthorizedservice dealer. [,_ARNING:Whentheunitisturnedoffmake] surethecuttingattachmenthasstopped| beforetheunitissetdowntopreventseriousI personalinjury. J 20