2. Toro
  3. PT-46 Power Trowel
PT-46 Power Trowel

Toro PT-46 Power Trowel, PT-36 Power Trowel, PT-36PP Power Trowel, PT-46PP Power Trowel User manual

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FormNo.3382-986RevA
PT-SeriesPowerTrowel
ModelNo.68048—SerialNo.314000001andUp
ModelNo.68049—SerialNo.314000001andUp
ModelNo.68050—SerialNo.314000001andUp
ModelNo.68051—SerialNo.314000001andUp
g019403
Registeratwww.Toro.com.
OriginalInstructions(EN)
*3382-986*A
WARNING
CALIFORNIA
Proposition65Warning
Thisproductcontainsachemicalorchemicals
knowntotheStateofCaliforniatocausecancer,
birthdefects,orreproductiveharm.
Theengineexhaustfromthisproduct
containschemicalsknowntotheStateof
Californiatocausecancer,birthdefects,
orotherreproductiveharm.
Useofthisproductmaycauseexposureto
chemicalsknowntotheStateofCalifornia
tocausecancer,birthdefects,orother
reproductiveharm.
ThissparkignitionsystemcomplieswithCanadianICES-002.
Becauseinsomeareastherearelocal,state,orfederal
regulationsrequiringthatasparkarresterbeusedonthe
engineofthismachine,asparkarresterisavailableas
anoption.Ifyourequireasparkarrester,contactyour
AuthorizedToroServiceDealer.
GenuineTorosparkarrestersareapprovedbytheUSDA
ForestryService.
Important:ItisaviolationofCaliforniaPublic
ResourceCodeSection4442touseoroperatetheengine
onanyforest-covered,brush-covered,orgrass-covered
landwithoutasparkarrestermufermaintainedin
workingorder,ortheengineconstricted,equipped,and
maintainedforthepreventionofre.Otherstatesor
federalareasmayhavesimilarlaws.
Theenclosed
Engine Owner's Man ual
issuppliedfor
informationregardingtheUSEnvironmentalProtection
Agency(EPA)andtheCaliforniaEmissionControl
Regulationofemissionsystems,maintenance,and
warranty.Replacementsmaybeorderedthroughthe
enginemanufacturer.
Introduction
Thismachineisusedtocreateasmoothnishtoconcrete
slabs.
Readthisinformationcarefullytolearnhowtooperateand
maintainyourproductproperlyandtoavoidinjuryand
productdamage.Youareresponsibleforoperatingthe
productproperlyandsafely.
YoumaycontactTorodirectlyatwww .Toro.comforproduct
andaccessoryinformation,helpndingadealer,ortoregister
yourproduct.
Wheneveryouneedservice,genuineToroparts,oradditional
information,contactanAuthorizedServiceDealerorToro
CustomerServiceandhavethemodelandserialnumbersof
yourproductready.
Figure1illustratesthelocationofthe
modelandserialnumbersontheproduct.Writethenumbers
inthespaceprovided.
1
G019402
Figure1
1.Locationofthemodelandserialnumbers
ModelNo.
SerialNo.
Thismanualidentiespotentialhazardsandhassafety
messagesidentiedbythesafetyalertsymbol(Figure2),
whichsignalsahazardthatmaycauseseriousinjuryordeath
ifyoudonotfollowtherecommendedprecautions.
Figure2
1.Safetyalertsymbol
Thismanualuses2wordstohighlightinformation.
Importantcallsattentiontospecialmechanicalinformation
andNoteemphasizesgeneralinformationworthyofspecial
attention.
©2013—TheToro®Company
8111LyndaleAvenueSouth
Bloomington,MN55420
2
Contactusatwww.Toro.com.
PrintedintheUSA
AllRightsReserved
Contents
Introduction..................................................................2
Safety...........................................................................4
SafeOperatingPractices...........................................4
SafetyandInstructionalDecals.................................5
ProductOverview..........................................................6
Controls................................................................6
Specications.........................................................8
Attachments/Accessories.........................................8
Operation.....................................................................8
CheckingtheEngineOilLevel..................................8
CheckingtheGearcaseOilLevel...............................9
CleaningDebrisfromtheMachine.............................9
FoldingandUnfoldingtheHandle.............................9
AddingFuel...........................................................10
StartingandStoppingtheEngine..............................11
OperatingtheMachine............................................12
Maintenance.................................................................13
RecommendedMaintenanceSchedule(s)......................13
PremaintenanceProcedures........................................13
DisconnectingtheSparkPlugWire...........................13
Lubrication...............................................................14
LubricatingtheBladeArms.....................................14
EngineMaintenance..................................................14
ServicingtheAirCleaner.........................................14
ServicingtheEngineOil..........................................15
ServicingtheGearcaseOil.......................................16
ServicingtheSparkPlug..........................................17
BeltMaintenance......................................................17
CheckingtheBelt,PulleyAlignment,BeltTension,
andBelt-guideGap.............................................17
RemovingandInstallingtheBeltGuard.....................18
ReplacingtheBelt...................................................18
AligningthePulleys................................................19
AdjustingtheDyna-Clutch......................................19
AdjustingtheBeltGuide.........................................20
ControlsSystemMaintenance.....................................20
AdjustingtheTiltKnob..........................................20
AdjustingtheProPitchLinkageRod..........................21
TestingtheDyna-ClutchLever.................................21
AdjustingtheBlades...............................................22
AdjustingtheBladeArms........................................23
Storage........................................................................23
Troubleshooting...........................................................24
3
Safety
Improperuseormaintenancebytheoperatoror
ownercanresultininjury.Toreducethepotential
forinjury,complywiththesesafetyinstructionsand
alwayspayattentiontothesafetyalertsymbol,which
means
Caution
,
W ar ning
,or
Danger
—personalsafety
instruction.Failuretocomplywiththeinstructionmay
resultinpersonalinjuryordeath.
SafeOperatingPractices
Training
•ReadtheOperator’sManualandothertrainingmaterial.If
theoperator(s)ormechanic(s)cannotreadorunderstand
theinformation,itistheowner’sresponsibilitytoexplain
thismaterialtothem.
•Becomefamiliarwiththesafeoperationoftheequipment,
operatorcontrols,andsafetysigns.
•Alloperatorsandmechanicsshouldbetrained.The
ownerisresponsiblefortrainingtheusers.
•Neverletchildrenoruntrainedpeopleoperateorservice
theequipment.Localregulationsmayrestricttheageof
theoperator.
•Theowner/usercanpreventandisresponsiblefor
accidentsorinjuriesoccurringpeople,ordamageto
property.
Preparation
•Wearappropriateclothingincludingsafetyglassesand
hearingprotection.Longhair,looseclothing,orjewelry
maygettangledinmovingparts.
•Inspecttheareawheretheequipmentistobeusedand
removeallobjectswhichcanbecontactedbythemachine.
•Useextracarewhenhandlinggasolineandotherfuels.
Theyareammableandvaporsareexplosive.
–Useonlyanapprovedcontainer.
–Neverremovethegascaporaddfuelwiththeengine
running.
–Allowtheenginetocoolbeforerefueling.
–Donotsmoke.
–Neverfuelordrainthemachineindoors.
•Checkthattheoperatorpresencecontrols,safetyswitches,
andshieldsareattachedandfunctioningproperly.Donot
operateunlesstheyarefunctioningproperly.
Operation
•Onlyoperateingoodlight,keepingawayfromholesand
hiddenhazards.
•Besurealldrivesareinneutralbeforestartingengine.
•Neveroperatewithouttheshields,covers,orotherguards
securelyinplace.
•Donotchangetheenginegovernorsettingoroverspeed
theengine.
•Stoptheequipmentandinspectthebladesafterstriking
anobjectorifanabnormalvibrationoccurs.Make
necessaryrepairsbeforeresumingoperation.
•Keephandsandfeetawayfromthebladearea.
•Donotoperatethemachineundertheinuenceof
alcoholordrugs.
•Lightningcancausesevereinjuryordeath.Iflightning
isseenorthunderisheardinthearea,donotoperate
themachine;seekshelter.
•Useextremecarewhenloadingorunloadingthemachine
intoatrailerortruck.
MaintenanceandStorage
•Waitforallmovementtostopbeforeadjusting,cleaning,
orrepairing.Stopthemachine,stoptheengine,and
disconnectthespark-plugwire.
•Cleandebrisfromtheblades,drives,mufer,andengine
tohelppreventres.Cleanupoilorfuelspillage.
•Lettheenginecoolbeforestoringanddonotstorenear
ame.
•Shutoffthefuelwhilestoringortransportingontrailers.
Donotstorefuelnearamesordrainindoors.
•Parkthemachineonlevel,hardground.Neverallow
untrainedpersonneltoserviceit.
•Keepallpartsingoodworkingconditionandallhardware
tightened.Replaceallwornordamageddecals.
4
SafetyandInstructionalDecals
Safetydecalsandinstructionsareeasilyvisibletotheoperatorandarelocatednearanyareaofpotential
danger.Replaceanydecalthatisdamagedorlost.
93-9084
1.Liftpoint
2.Tie-downpoint
117–2718
117–4979
1.Entanglementhazard,belt—keepawayfrommovingparts;
keepallguardsandshieldsinplace
125–4933
1.Warning—readthe
Operator’sManual.
4.Chokinghazard—donot
runtheengineinan
unventilatedarea.
2.Warning—wearhearing
protection.
5.Explosionhazard—stop
theengineandextinguish
allamesbeforerefueling.
3.Warning—keep
bystandersawayfrom
themachine.
125–4934
1.ReadtheOperator’s
Manual.
3.Engageclutch
2.Disengageclutch
125–4935
Models68049and68051only
1.Lowertheblades2.Raisetheblades
5
ProductOverview
1
2
3
4
g019519
5
2
4
1
g020316
Figure3
1.Handle-adjustmentknob
4.Dyna-Clutchlever
2.Throttlehandle5.Tilt-adjustmentknob
(Models68048and68050
only)
3.ProPitchhandle(Models
68049and68051only)
1
2
3
4
5
7
g021560
6
Figure4
1.Liftingpoint5.Sedimentcup
2.Fuel-tankcap6.Recoil-starterhandle
3.Chokelever7.EngineOn/Offswitch
4.Fuelvalve
Controls
Recoil-starterHandle
Pulltherecoil-starterhandletostarttheengine(Figure4).
FuelValve
Closethefuelvalvewhentransportingorstoringthemachine
(Figure4).
ChokeLever
Usethechokelever(Figure4)tostartacoldengine.Before
pullingtherecoil-starterhandle,movethechokelevertothe
closedposition.Oncetheengineisrunning,movethechoke
levertotheopenposition.
Note:Awarmenginerequireslittleornochoking.
EngineOn/OffSwitch
TheOn/Offswitch(Figure4)allowstheoperatorofthe
machinetostartandstoptheengine.Thisswitchislocated
onthefrontoftheengine.RotatetheOn/Offswitchtothe
Onpositiontostartandruntheengine.RotatetheOn/Off
switchtotheOffpositiontostoptheengine.
6
ThrottleHandle
Pullthethrottlehandle(Figure3)toincreasetheenginespeed,
andpushthehandletodecreasetheenginespeed.Turnthe
handleclockwisetolockthethrottleataspecicspeed.Turn
thehandlecounterclockwisetounlockthethrottle.
Handle-adjustmentKnob
Turntheknobcounterclockwisetoloosenandmovethe
handletothedesiredposition.Turntheknobclockwiseto
tightenandlockthehandleinplace(Figure3).
Dyna-ClutchLever
MovetheDyna-Clutchlever(Figure5)totheOnposition
(up)toallowthebladestorotate.MovethelevertotheOff
position(down)tostoptheblades.Intheeventthatthe
operatorreleasesthehandlewhilethebladesareturning,the
centrifugalforcefromtheswingofthehandlewillthrowthe
clutchlevertotheStopposition.
g019978
RUN
STOP
DYNA CLUTCH
1
Figure5
1.Dyna-Clutchlever
ProPitch
TM
Handle
Models68049and68051only
Pullthehandletoincreasetheangleofthebladestothe
concrete.Pressthetripbuttontoreleasethelock,andpush
thehandletodecreasetheangleoftheblades.
2
1
G019367
Figure6
1.Tripbutton2.Handle
Tilt-adjustmentKnob
Models68048and68050only
Turntheknobclockwisetoincreasetheangleoftheblades
(Figure6).Turntheknobcounterclockwisetoattenor
decreasetheangleoftheblades.
1
g021559
Figure7
1.Tilt-adjustmentknob
7
Specications
Note:Specicationsanddesignaresubjecttochange
withoutnotice.
Models68048and6804968050and68051
Width
92cm(36.5inches)117cm(46inches)
Length(operating)177cm(70inches)190.5cm(75
inches)
Height(operating)99cm(39inches)99cm(39inches)
Weight
102kg(225lbs)112kg(245lbs)
Attachments/Accessories
Aselectionofapprovedattachmentsandaccessoriesare
availableforusewiththemachinetoenhanceandexpand
itscapabilities.ContactyourAuthorizedServiceDealeror
Distributororgotowww.Toro.comforalistofallapproved
attachmentsandaccessories.
Operation
Note:Determinetheleftandrightsidesofthemachine
fromthenormaloperatingposition.
CheckingtheEngineOilLevel
ServiceInterval:Beforeeachuseordaily
Themachinecomesfromthefactorywithoilintheengine
crankcase,however,itmaybenecessarytoaddoil.Addonly
enoughoiltoraisetheleveltotheFullmarkonthedipstick;
refertoServicingtheEngineOil(page15).
OilType:4-cycleengineoilthatmeetsorexceedsthe
requirementsforAPIservicecategorySJorhigher
Models
CrankcaseCapacity
68048and68049
0.58L(0.61USqt)
68050and68051
1.1L(1.2USqt)
Important:Iftheoillevelinthecrankcaseistoolow
ortoohighandyouruntheengine,youmaydamage
theengine.
Note:UseSAE10W-30forgeneraluse.Youcanuse
theotherviscositiesshowninthechartwhentheaverage
temperatureinyourareaiswithintheindicatedrange(
Figure
8).
g013375
0 20 40 60 80 100 F
-20 -10 0 10 20 30 40 C
o
o
30
5W - 30 / 10W - 30
Figure8
1.Stopthemachineonalevelsurface.
2.SettheDyna-ClutchlevertotheStopposition,stop
theengine,waitforallmovingpartstostop,andturn
offtheengineswitch.
3.Cleanaroundthedipstick(Figure9)sothatdirtcannot
fallintothellportanddamagetheengine.
8
1
2
3
4
G019746
Figure9
1.Fillport
3.Oil-levelupperlimit
2.Dipstick
4.Oil-levellowerlimit
4.Unscrewthedipstickandwipetheendclean(Figure9).
5.Slidethedipstickfullyintothellport(Figure9)
withoutthreadingitintotheport.
6.Removethedipstickandlookattheend.Iftheengine
oillevelislow ,slowlypouronlyenoughoilintothell
porttoraisetheleveltotheFullmarkonthedipstick
(Figure9).
7.Installandsecurethedipstick.
CheckingtheGearcaseOil
Level
ServiceInterval:Beforeeachuseordaily
1.Stopthemachineonalevelsurface.
2.SettheDyna-ClutchlevertotheStopposition,stop
theengine,andwaitforallmovingpartstostop.
3.Lookatthesightglassinthegearcaseplug(Figure10).
Theoillevelshouldbe3/4full.
g021590
Figure10
Iftheoillevelisnotcorrect,refertoServicingtheGearcase
Oil(page16)
.
CleaningDebrisfromthe
Machine
ServiceInterval:Beforeeachuseordaily
1.SettheDyna-ClutchlevertotheStopposition,stop
theengine,waitforallmovingpartstostop,andturn
offtheengineswitch.
2.Brushdirtanddebrisawayfromtheaircleanerand
engineopenings.
FoldingandUnfoldingthe
Handle
1.Turnthehandle-adjustmentknobcounterclockwise
toloosenthehandle.
2.Placethehandletothedesiredpositionandturn
thehandle-adjustmentknobclockwisetotightenthe
handle(Figure11).
9
1 32
G019366
Figure11
1.Handlefullyextended3.Handlefolded
2.Handle-adjustmentknob
AddingFuel
•Forbestresults,useonlyclean,fresh(lessthan30days
old),unleadedgasolinewithanoctaneratingof87or
higher((R+M)/2ratingmethod).
•ETHANOL:Gasolinewithupto10%ethanol(gasohol)
or15%MTBE(methyltertiarybutylether)byvolume
isacceptable.EthanolandMTBEarenotthesame.
Gasolinewith15%ethanol(E15)byvolumeisnot
approvedforuse.Neverusegasolinethatcontainsmore
than10%ethanolbyvolume,suchasE15(contains15%
ethanol),E20(contains20%ethanol),orE85(contains
upto85%ethanol).Usingunapprovedgasolinemay
causeperformanceproblemsand/orenginedamage
whichmaynotbecoveredunderwarranty..
•Donotusegasolinecontainingmethanol.
•Donotstorefueleitherinthefueltankorfuelcontainers
overthewinterunlessafuelstabilizerisused.
•Donotaddoiltogasoline.
DANGER
Incertainconditions,gasolineisextremely
ammableandhighlyexplosive.Areorexplosion
fromgasolinecanburnyouandothersandcan
damageproperty.
•Fillthefueltankoutdoors,inanopenarea,
whentheengineiscold.Wipeupanygasoline
thatspills.
•Neverllthefueltankinsideanenclosedtrailer.
•Donotllthefueltankcompletelyfull.Add
gasolinetothefueltankuntilthelevelis6to13
mm(1/4to1/2inch)belowthebottomofthe
llerneck.Thisemptyspaceinthetankallows
gasolinetoexpand.
•Neversmokewhenhandlinggasoline,andstay
awayfromanopenameorwheregasoline
fumesmaybeignitedbyaspark.
•Storegasolineinanapprovedcontainerand
keepitoutofthereachofchildren.Donotbuy
morethana30-daysupplyofgasoline.
•Donotoperatewithoutentireexhaustsystemin
placeandinproperworkingcondition.
DANGER
Incertainconditionsduringfueling,static
electricitycanbereleasedcausingasparkwhich
canignitethegasolinevapors.Areorexplosion
fromgasolinecanburnyouandothersandcan
damageproperty.
•Alwaysplacegasolinecontainersontheground
awayfromyourvehiclebeforelling.
•Donotllgasolinecontainersinsideavehicleor
onatruckortrailerbedbecauseinteriorcarpets
orplastictruckbedlinersmayinsulatethe
containerandslowthelossofanystaticcharge.
•Whenpractical,removegas-poweredequipment
fromthetruckortrailerandrefueltheequipment
withitswheelsontheground.
•Ifthisisnotpossible,thenrefuelsuch
equipmentonatruckortrailerfromaportable
container,ratherthanfromagasolinedispenser
nozzle.
•Ifagasolinedispensernozzlemustbeused,
keepthenozzleincontactwiththerimofthe
fueltankorcontaineropeningatalltimesuntil
fuelingiscomplete.
10
UsingFuelStabilizer/Conditioner
Useafuelstabilizer/conditionerinthemachinetokeepthe
fuelfreshduringstorageof90daysorless.Ifyouarestoring
themachineforlonger,drainthefueltank;refertoStorage
(page23).
Important:Donotusefueladditivescontaining
methanolorethanol.
Addthecorrectamountoffuelstabilizer/conditionertothe
fuel,andfollowthedirectionsofthemanufacturer.
Note:Fuelstabilizer/conditionerismosteffectivewhen
mixedwithfreshfuel.Tominimizethechanceofvarnish
depositsinthefuelsystem,usefuelstabilizeratalltimes.
FillingtheFuelTank
Models
FuelTankCapacity
68048and68049
3.1L(0.82USgallons)
68050and68051
5.3L(1.40USgallons)
1.SettheDyna-ClutchlevertotheStopposition,stop
theengine,waitforallmovingpartstostop,andturn
offtheengineswitch.
2.Allowtheenginetocool.
3.Cleanaroundthefuel-tankcapandremoveit(
Figure
12).
Note:Thecapistetheredtothefueltank.
G020679
1
Figure12
1.Maximumfuellevel
4.Addunleadedgasolinetothefueltankuntilthelevelis
atthebottomofthemaximumfuellevel(Figure12).
Important:Theextraspaceinthetankallowsthe
fueltoexpand.Donotllthefueltankcompletely
full.
5.Installthefuel-tankcapsecurely.
6.Wipeupanyfuelthatmayhavespilled.
StartingandStoppingthe
Engine
StartingtheEngine
1.SetthethrottletofullrpmandsettheDyna-Clutch
levertotheStopposition.
2.MovetheengineswitchtotheOnpositionandturn
onthefuelvalve.
3.Movethechokelevertotheleftifyouarestartinga
coldengine.
Note:Awarmorhotenginemaynotrequirechoking.
4.Pulltherecoil-starthandleslowlyuntilyoufeelsome
resistance,thenpulltheitsharplytostarttheengine.
5.Aftertheenginestarts,graduallymovethechoketothe
right.Iftheenginestallsorhesitates,movethechoke
leftagainuntiltheenginewarmsup.
11
6.Movethethrottlelevertodesiredsetting.
StoppingtheEngine
1.Turntheengineswitchandfuelvalveoff.
2.Waitforallmovingpartstostopbeforeproceeding.
OperatingtheMachine
Important:Usethemachineonconcretethathasnot
setcompletely,butensurethattheconcretehasset
enoughtosupporttheweightofthemachine.
1.Starttheengine.
2.Aftertheenginehaswarmedup,adjustthethrottleto
approximatelyhalfspeed.
3.Adjustthebladestothedesiredposition.
•Foroating,setthebladesat,butwithsome
tensiononthecable.
•Fornishing,setthepitchofthebladesto
approximately6to9mm(1/4to3/8inches),or
approximately5to10degrees.Startwith
4.Holdthehandlermlywith1hand,andmovethe
Dyna-ClutchlevertotheOnpositiontostartthe
movementoftheblades.
5.Guidethetrowelovertheconcreteinacircular
back-and-forthmotion.
Note:Ifthebladesstarttodigintotheconcrete
decreasetheamountofthepitch.
6.SettheDyna-ClutchlevertotheOffposition,waitfor
anymovingpartstostopmoving,andstoptheengine;
referto
StoppingtheEngine(page12).
12
Maintenance
RecommendedMaintenanceSchedule(s)
MaintenanceService
Interval
MaintenanceProcedure
Aftertherst25hours
•Changetheengineoil.
Beforeeachuseordaily
•Checktheengineoillevel.
•Checkthegearcaseoillevel.
•Cleandebrisfromtheaircleanerandengine.
•Lubricatethebladearms.
•Inspecttheaircleanerelements.
•Checkforloosefasteners.
Every40hours
•Checkthebelt,pulleyalignment,belttension,andbelt-guidegap.
Every50hours
•Cleantheairlterelements.Cleanthemmorefrequentlyindustyoperating
conditions.
Every100hours
•Changetheengineoil.
•Inspectandadjustthesparkplug;replaceitifnecessary.
Every150hours
•Changethegearcaseoil.
Every200hours
•Replacethesparkplug.
Every300hours
•Replacethepaperaircleanerelement.Replaceitmorefrequentlyindustyoperating
conditions.
Yearlyorbeforestorage
•T ouchupchippedpaint
Premaintenance
Procedures
DisconnectingtheSparkPlug
Wire
Beforeperforminganymaintenanceontheengine,belts,or
blades,disconnectthesparkplugwirefromthesparkplug
(Figure13).
g019430
1
Figure13
1.Spark-plugwire
13
Lubrication
LubricatingtheBladeArms
ServiceInterval:Beforeeachuseordaily
GreaseType:General-purposegrease.
1.Cleanaroundeachgreasettingwitharagandliftthe
plasticcapoffeachgreasetting.
2.Pumpseveralshotsofgreaseintoeachttinguntilit
startstooozeoutofthebearing(Figure14andFigure
15).
Important:Pumpgreaseinslowlyandcarefully
topreventdamagetothebearingseals.
g019383
Figure14
g019396
Figure15
3.Wipeupanyexcessgrease.
EngineMaintenance
ServicingtheAirCleaner
ServiceInterval:Beforeeachuseordaily—Inspecttheair
cleanerelements.
Every50hours—Cleantheairlterelements.Clean
themmorefrequentlyindustyoperatingconditions.
Every300hours/Yearly(whichevercomes
rst)—Replacethepaperaircleanerelement.Replace
itmorefrequentlyindustyoperatingconditions.
Important:Donotoperatetheenginewithouttheair
lterassembly;extremeenginedamagewilloccur.
1.SettheDyna-ClutchlevertotheStopposition,stop
theengine,andwaitforallmovingpartstostop.
2.Disconnectthewirefromthesparkplug.
3.Removethenutthatsecurestheaircleanercover
(Figure16BoxA).
G019679
g019680
A
B
C
D
Figure16
14
4.Removethecover(Figure16BoxB).
Note:Becarefultopreventdirtanddebrisfrom
fallingintothebase.
5.Removethefoamandpaperelementsfromthebase
(Figure16BoxC).
6.Removethefoamelementfromthepaperelement
(Figure16BoxD).
7.Inspectthefoamandpaperelements,andreplacethem
iftheyaredamagedorexcessivelydirty.
Note:Nevertrytobrushdirtoffthepaperelement;
brushingforcesthedirtintothebers.
8.Cleanthefoamelementinwarm,soapywaterorina
nonammablesolvent.
Note:Donotusegasolinetocleanthefoamelement
becauseitcouldcreateariskofreorexplosion.
9.Rinseanddrythefoamelementthoroughly.
10.Dipthefoamelementincleanengineoil,thensqueeze
outtheexcessoil.
Note:Excessoilinthefoamelementrestrictstheair
owthroughtheelementandmayreachthepaper
lterandclogit.
11.Wipedirtfromthebaseandthecoverwithamoistrag.
Note:Becarefultopreventdirtanddebrisfrom
enteringtheairductleadingtothecarburetor.
12.Installtheaircleanerelementsandensurethattheyare
properlypositioned.
13.Securelyinstallthecoverwiththenut.
ServicingtheEngineOil
OilType:4-cycleengineoilthatmeetsorexceedsthe
requirementsforAPIservicecategorySJorhigher
Models
CrankcaseCapacity
68048and68049
0.58L(0.61USqt)
68050and68051
1.1L(1.2USqt)
Important:Iftheoillevelinthecrankcaseistoolow
ortoohighandyouruntheengine,youmaydamage
theengine.
Viscosity:UseSAE10W-30forgeneraluse.Youcanuse
theotherviscositiesshowninthechartwhentheaverage
temperatureinyourareaiswithintheindicatedrange(
Figure
8).
g013375
0 20 40 60 80 100 F
-20 -10 0 10 20 30 40 C
o
o
30
5W - 30 / 10W - 30
Figure17
ChangingtheEngineOil
ServiceInterval:Aftertherst25hours
Every100hours
WARNING
Oilmaybehotaftertheenginehasbeenrun,and
contactwithhotoilcancauseseverepersonalinjury.
Avoidcontactingthehotengineoilwhenyoudrain
it.
1.Movethemachinetoalevelsurface.
2.SettheDyna-ClutchlevertotheStopposition,stop
theengine,andwaitforallmovingpartstostop.
3.Disconnectthewirefromthesparkplug.
4.Placeapanunderthedrainplugtocatchtheoil.
5.Removethedrainplug(
Figure18).
1
g019417
Figure18
1.Drainplug
6.Replacetheplugwhentheoilhasdrainedcompletely.
Note:Disposeoftheusedoilatacertiedrecycling
center.
7.Removethedipstick(
Figure9)andslowlypouroilinto
thellholeuntiltheoilpoursoutofthellhole.
8.Installandsecurethedipstick.
9.Wipeupanyspilledoil.
15
ServicingtheGearcaseOil
ServiceInterval:Every150hours
OilType:80W-90
gear oil
thatmeetsorexceedsAPI
servicecategory
GL-5
.
Capacity:1.18L(1.25USqt)
1.SettheDyna-ClutchlevertotheStopposition,stop
theengine,andwaitforallmovingpartstostop.
2.Disconnectthewirefromthesparkplug.
3.Placeapanunderthedrainplugtocatchtheoil.
4.Removethegearcaseplug(
Figure18).
1
g021574
Figure19
1.Gearcaseplug
5.Tipthemachineanddraintheoilcompletelyoutof
thegearcase.
Note:Disposeoftheusedoilatacertiedrecycling
center.
6.Returnthemachinetoanupright,levelposition.
7.Placea3.8cm(1-1/2inch)blockunderthestationary
bladeguard(outerring)sothatthesideofthegearbox
withtheplugisapproximately6mm(1/4inch)higher
thantheothersideofthegearbox.
8.Slowlypouroilintotheplugholeuntiltheoilreaches
thethreadsofthehole.
Note:Ifnecessary,useaexiblefunnel.
9.Applythread-sealingcompoundtothethreadsofthe
plug.
10.Installandtightenthepluguntilitissecure,andreturn
themachinetoanupright,levelposition.
Note:Theoillevelinthesightglassoftheplugshould
be3/4full(Figure20).
g021590
Figure20
16
ServicingtheSparkPlug
ServiceInterval:Every100hours—Inspectandadjustthe
sparkplug;replaceitifnecessary.
Every200hours—Replacethesparkplug.
UseanNGKBPR6ESsparkplugorequivalent.
1.SettheDyna-ClutchlevertotheStopposition,stop
theengine,andwaitforallmovingpartstostop.
2.Disconnectthewirefromthesparkplug.
3.Cleanaroundthesparkplug.
4.Removethesparkplugfromthecylinderhead.
Important:Replaceacracked,fouled,ordirty
sparkplug.Donotcleantheelectrodes,because
gritenteringthecylindercandamagetheengine.
5.Setthegapontheplugto0.76mm(0.030inch);refer
to
Figure21.
G019300
1 2
4
3
Figure21
1.Sideelectrode
3.Insulator
2.Centerelectrode4.0.76mm(0.030inch)gap
6.Carefullyinstallthesparkplugbyhand(toavoidcross
threading)untilitishandtight.
7.Tightenthesparkpluganadditional1/2turnifitis
new;otherwise,tightenitanadditional1/8to1/4turn.
Important:Aloosesparkplugcanbecomevery
hotandcandamagetheengine;overtighteninga
sparkplugmaydamagethethreadsinthecylinder
head.
8.Connectthewiretothesparkplug.
BeltMaintenance
CheckingtheBelt,Pulley
Alignment,BeltTension,and
Belt-guideGap
ServiceInterval:Every40hours
1.Removethebeltguard;refertoRemovingand
InstallingtheBeltGuard(page18).
2.MovetheDyna-ClutchlevertotheStopposition.
3.Checktheconditionofthebeltforwearordamage.
Note:Ifthebeltiswornordamaged,replacethebelt;
refertoReplacingtheBelt(page18).
4.MovetheDyna-ClutchlevertotheRunposition.
5.Checkthatthebeltisalignedstraightbetweenpulleys.
Note:Ifthebeltdoesnotrunstraightbetweenpulleys,
alignthepulleys;referto
AligningthePulleys(page19).
6.Checkthatthebelthasenoughtensiontoattenit
betweentheenginepulleyandthebelttensionpulley.
Note:Ifbelttensionistoolow,adjustthetension
ofthebelt-tensionpulley;refertoAdjustingthe
Dyna-Clutch(page19)
.
7.Measurethegapbetweenthebeltandthebeltguide.
Theairgapshouldbeapproximately6mm(1/4inch).
Note:Iftheairgapislargerorsmallerthan6mm
(1/4inch),adjustthebeltguide(Figure26);referto
AdjustingtheBeltGuide(page20).
8.Installthebeltguard;refertoRemovingandInstalling
theBeltGuard(page18).
17
RemovingandInstallingthe
BeltGuard
Removethebeltcoverasfollows:
1.Removethe2hex-washerheadbolts(5/16x1inch)
thatsecurethebeltguardtothebelt-guardbracket
(
Figure22).
Figure22
1.Hex-washerheadbolt3.Belt-coverbracket
2.Beltcover
2.Pullthebeltguardawayfromtheengineandthenup
(
Figure22).
Installthebeltcoverasfollows:
1.Aligntheholesinthebeltguardwiththeholesinthe
belt-coverbracket(
Figure22).
2.Securethebeltguardtothebracketwiththe2
hex-washerheadbolts(5/16x1inch).
ReplacingtheBelt
Removethebeltasfollows:
1.Stopthemachineonalevelsurface,placethe
Dyna-ClutchleverintheStopposition,stoptheengine,
anddisconnectthesparkplugwire.
2.Removethebeltguard;refertoRemovingand
InstallingtheBeltGuard(page18).
3.Slipthebeltoffthebelt-tensionpulley(Figure23).
g019382
1
2
3
4
5
Figure23
1.Belt-tensionpulley
3.Gearboxpulley
2.Belt4.Enginepulley
4.Slipthebeltoffthegearboxpulley(Figure23).
5.Slipthebeltofftheenginepulleyandremovethebelt
(Figure23).
Installthebeltasfollows:
1.EnsuretheDyna-ClutchleverintheStopposition.
2.Alignthebeltovertheenginepulley(
Figure23).
3.Alignthebeltoverthegearboxpulley(
Figure23).
4.Slipthebeltoverthebelt-tensionpulley(Figure23).
5.Installthebeltguard;refertoRemovingandInstalling
theBeltGuard(page18)
.
18
AligningthePulleys
1.Placeastraightedgeruleracrosstheenginepulleyand
thegearboxpulley(Figure24).
Figure24
1.Straightedge
3.Enginepulley
2.Gearboxpulley4.Setscrew
2.Ifthepulleysareoutofalignmentperformthe
following:
A.Loosenthe2setscrewsthatsecuretheengine
pulleytotheengineshaft(
Figure24).
B.Gentlytaptheenginepulleytowardorawayfrom
theengineuntilthegearboxandenginepulleys
aligntothestraightedgeruler(Figure24).
C.Tightenthe2setscrewsthatsecuretheengine
pulleytotheengineshaft(Figure24).
AdjustingtheDyna-Clutch
Important:Thisadjustmentprocedureaffectsthe
operationoftheDyna-Clutchandiscriticaltothesafe
operationofthemachine.
Adjustthetension-pulleyspringasneededtotightenthebelt.
1.MovetheDyna-ClutchlevertotheStopposition;refer
to
Dyna-ClutchLever(page7).
2.Loosenthe2jamnutsthatsecurethebarrelofthe
clutchcabletotheclutchbracket,androtatethenuts
toeitherendofthreadsonthebarrel(Figure25).
Figure25
1.Clutchbracket4.Spring
2.Barrel
5.Cable
3.Cablehousing
6.Locknuts
3.Graspthebarrelwithonehandandliftthecable
housinglightly(Figure25).
Note:Liftingthecablehousingatthebarrelshould
removetheslackfromthecablebutapplynotension
tothespring.
4.Whileholdingtensiononthecable,useyourother
hand,rotatethejamnutsuntilthenutsareushtothe
clutchbracket(
Figure25).
5.Tightenthejamnutstosecurethebarreltothebracket
(Figure25).
6.Checkthetensionofthecontrolcable.Repeatsteps
2through4untilthereistensionontheDyna-Clutch
cablebutnotensiononthespring.
Note:Ifthereistoomuchtensiononthecableand
spring,theDyna-Clutchwillnotreleasecompletely.If
thereisnotenoughtensiononthecable,thecablemay
disconnectfromthepulleybracket.
7.Ifnercableadjustmentisneeded,performthe
following:
A.Loosenthe2jamnutsslightly(Figure25).
B.Rotatethejamnutstoclockwisetoincreasecable
tensionorcounterclockwisetodecreasetension
(
Figure25).
C.Tightenthejamnutstosecurethebarreltothe
clutchbracket(Figure25).
8.StartthemachineandsetDyna-Clutchtothe
Runpositionshortfewmoments,thenmovethe
Dyna-ClutchtotheStopposition.
Note:Ifthebladescontinuetorotatewhenthe
Dyna-ClutchisintheStopposition,thereistoomuch
19
tensionontheclutchcable.Shutofftheengineand
repeatstep7untilthebladesdonotrotatewhenthe
engineisrunningandtheDyna-ClutchisintheStop
position.
AdjustingtheBeltGuide
1.PlacetheDyna-ClutchleverintheRunposition.
2.Measuretheairgapbetweenthebeltandthebeltguide
(Figure26).
Figure26
1.6mm(1/4inch)
measures-airgap
3.Beltguide
2.Belt4.
Theairgapshouldbeapproximately6mm(1/4inch).Ifan
adjustmentneedstobedone,performthefollowing:
1.Loosenthehex-angeheadboltthatsecuresthebelt
guidetotheengineplate(Figure26).
2.Whilekeepingthetopofthebeltguideparalleltothe
belt,movethebeltguidetowardorawayfromthebelt
untiltheairgapiscorrect(Figure26).
3.Tightenthehex-angeheadboltthatsecuresthebelt
guidetotheengineplate(Figure26).
ControlsSystem
Maintenance
AdjustingtheTiltKnob
1.SettheDyna-ClutchlevertotheStopposition,stop
theengine,andwaitforallmovingpartstostop.
2.Disconnectthewirefromthesparkplug.
3.Attachanoverheadlifttotheliftingpointonthe
machineandliftitoffoftheground.
4.Turnthetiltknobuntilthereisenoughcableslackto
accessthetiltlocknut(
Figure27).
Figure27
1.Tiltknob6.Nut
2.Bearing7.Tiltblock
3.Tiltrod8.Tiltcable
4.Tiltlocknut
9.Setscrew
5.Washer
5.Tightenthelocknutagainstthebearingthenloosenit
slightly.Setitwiththesetscrew(Figure27).
6.Adjustthenutsinsidethetiltblocktotakeupanycable
slack.
Note:Replacethecablesiffulltiltisnolongerobtainable.
20
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