PowerClear
ModelNo.38451—SerialNo.313000001andUp
ModelNo.38452—SerialNo.313000001andUp
®
621R/621ESnowthrower
FormNo.3373-698RevC
Operator'sManual
Introduction
Thismachineisintendedtobeusedbyresidential
homeownersorprofessional,hiredoperators.Itis
designedprimarilyforremovingsnowfrompaved
surfaces,suchasdrivewaysandsidewalks,andother
surfacesfortrafconresidentialorcommercial
properties.Itisnotdesignedforremovingmaterials
otherthansnow,norisitdesignedforclearingoffgravel
surfaces.
Readthisinformationcarefullytolearnhowtooperateand
maintainyourmachineproperlyandtoavoidinjuryand
machinedamage.Youareresponsibleforoperatingthe
machineproperlyandsafely.
YoumaycontactTorodirectlyatwww .Toro.comformachine
andaccessoryinformation,helpndingadealer,ortoregister
yourmachine.
Wheneveryouneedservice,genuineT oroparts,oradditional
information,contactanAuthorizedServiceDealerorToro
CustomerServiceandhavethemodelandserialnumbersof
yourmachineready.Figure1identiesthelocationofthe
modelandserialnumbersonthemachine.Writethenumbers
inthespaceprovided.
Figure1
1.Modelandserialnumberlocation
ModelNo.
SerialNo.
Thismanualidentiespotentialhazardsandhassafety
messagesidentiedbythesafetyalertsymbol(Figure2),
whichsignalsahazardthatmaycauseseriousinjuryordeath
ifyoudonotfollowtherecommendedprecautions.
Figure2
1.Safetyalertsymbol
Thismanualuses2wordstohighlightinformation.
Importantcallsattentiontospecialmechanicalinformation
andNoteemphasizesgeneralinformationworthyofspecial
attention.
Contents
Introduction..................................................................1
Training.................................................................2
Preparation.............................................................2
Operation...............................................................2
ClearingaCloggedDischargeChute..........................3
MaintenanceandStorage..........................................3
ToroSnowthrowerSafety.........................................3
SafetyandInstructionalDecals.................................4
Setup............................................................................5
1UnfoldingtheHandle............................................5
2InstallingtheDischargeChute................................5
3FillingtheEnginewithOil......................................6
4AdjustingtheControlCable...................................7
ProductOverview..........................................................7
Operation.....................................................................7
FillingtheFuelTank................................................8
CheckingtheEngineOilLevel..................................8
StartingtheEngine..................................................8
EngagingtheRotorBlades.......................................10
DisengagingtheRotorBlades..................................10
StoppingtheEngine...............................................10
AdjustingtheDischargeChute.................................10
ClearingaCloggedDischargeChute.........................11
PreventingFreeze-upafterUse.................................11
OperatingTips......................................................11
Maintenance.................................................................12
RecommendedMaintenanceSchedule(s)......................12
AdjustingtheControlCable.....................................13
©2012—TheT oro®Company
8111LyndaleAvenueSouth
Bloomington,MN55420
Registeratwww.T oro.com.
OriginalInstructions(EN)
PrintedintheUSA
AllRightsReserved
*3373-698*C
InspectingtheRotorBlades.....................................14
ChangingtheEngineOil.........................................14
ServicingtheSparkPlug..........................................15
ReplacingtheDriveBelt..........................................16
Storage........................................................................18
StoringtheSnowthrower.........................................18
Safety
Readandunderstandthecontentsofthismanualbefore
youstarttheengine.
Thesafetyalertsymbolshownin
alertyoutopotentialpersonalinjuryhazards.Obeyall
safetymessagesthatfollowthissymboltoavoidpossible
injuryordeath.
Improperlyusingormaintainingthismachinecould
resultininjuryordeath.Toreducethispotential,
complywiththefollowingsafetyinstructions.
Thismachineiscapableofamputatinghandsandfeet
andofthrowingobjects.Failuretoobservethefollowing
safetyinstructionscouldresultinseriousinjury.
Figure2isusedto
thisisnotpossible,thenrefuelsuchmachineryona
trailerwithaportablecontainer,ratherthanfroma
gasolinedispensernozzle.
–Keepthenozzleincontactwiththerimofthefuel
tankorcontaineropeningatalltimes,untilrefueling
iscomplete.Donotuseanozzlelock-opendevice.
–Replacegasolinecapsecurelyandwipeupspilledfuel.
–Iffuelisspilledonclothing,changeclothing
immediately.
•Useextensioncordsandreceptaclesasspeciedby
themanufacturerforallmachineswithelectricstarting
motors.
•Donotattempttoclearsnowfromagravelorcrushed
rocksurface.Thismachineisintendedforuseonlyon
pavedsurfaces.
•Neverattempttomakeanyadjustmentswhiletheengine
isrunning(exceptwhenspecicallyrecommendedby
manufacturer).
•Alwayswearsafetyglassesoreyeshieldsduringoperation
orwhileperforminganadjustmentorrepairtoprotect
eyesfromforeignobjectsthatmaybethrownfromthe
machine.
Training
•Read,understand,andfollowallinstructionsonthe
machineandinthemanual(s)beforeoperatingthis
machine.Bethoroughlyfamiliarwiththecontrolsand
theproperuseofthemachine.Knowhowtostopthe
machineanddisengagethecontrolsquickly.
•Neverallowchildrentooperatethemachine.Neverallow
adultstooperatethemachinewithoutproperinstruction.
•Keeptheareaofoperationclearofallpersons,particularly
smallchildren.
•Exercisecautiontoavoidslippingorfalling.
Preparation
•Thoroughlyinspecttheareawherethemachineistobe
usedandremovealldoormats,sleds,boards,wires,and
otherforeignobjects.
•Donotoperatethemachinewithoutwearingadequate
wintergarments.Avoidloosettingclothingthatcanget
caughtinmovingparts.W earfootwearthatwillimprove
footingonslipperysurfaces.
•Handlefuelwithcare;itishighlyammable.
–Useanapprovedfuelcontainer.
–Neveraddfueltoarunningengineorhotengine.
–Fillfueltankoutdoorswithextremecare.Neverll
fueltankindoors.
–Neverllcontainersinsideavehicleoronatruckor
trailerbedwithaplasticliner.Alwaysplacecontainers
ontheground,awayfromyourvehicle,beforelling.
–Whenpractical,removegas-poweredmachineryfrom
thetruckortrailerandrefuelitontheground.If
Operation
•Donotputhandsorfeetnearorunderrotatingparts.
Keepclearofthedischargeopeningatalltimes.
•Exerciseextremecautionwhenoperatingonorcrossing
graveldrives,walks,orroads.Stayalertforhidden
hazardsortrafc.
•Afterstrikingaforeignobject,stoptheengine,remove
theignitionkey ,thoroughlyinspectthemachineforany
damage,andrepairthedamagebeforerestartingand
operatingthemachine.
•Ifthemachineshouldstarttovibrateabnormally,stopthe
engineandcheckimmediatelyforthecause.Vibrationis
generallyawarningoftrouble.
•Stoptheenginewheneveryouleavetheoperating
position,beforeuncloggingtherotorbladehousing
ordischargechute,andwhenmakinganyrepairs,
adjustmentsorinspections.
•Whencleaning,repairing,orinspectingthemachine,stop
theengineandmakecertainthattherotorbladesandall
movingpartshavestopped.
•Donotruntheengineindoors,exceptwhenstarting
theengineandfortransportingthemachineinorout
ofthebuilding.Opentheoutsidedoors;exhaustfumes
aredangerous.
•Exerciseextremecautionwhenoperatingonslopes.
•Neveroperatethemachinewithoutproperguardsand
othersafetyprotectivedevicesinplaceandworking.
•Neverdirectthedischargetowardpeopleorareaswhere
propertydamagecanoccur.Keepchildrenandothers
away.
2
•Donotoverloadthemachinecapacitybyattemptingto
clearsnowattoofastarate.
•Lookbehindandusecarewhenbackingupwiththe
machine.
•Disengagepowertotherotorbladeswhenmachineis
transportedornotinuse.
•Neveroperatethemachinewithoutgoodvisibilityor
light.Alwaysbesureofyourfooting,andkeeparm
holdonthehandles.Walk;neverrun.
•Nevertouchahotengineormufer(
Figure3
1.Symbolstampedontheexhaustbafeindicatingahot
surface.
Figure3).
ToroSnowthrowerSafety
ThefollowinglistcontainssafetyinformationspecictoToro
productsorothersafetyinformationthatyoumustknow .
•Rotatingrotorbladescaninjurengersorhands.
Staybehindthehandlesandawayfromthedischarge
openingwhileoperatingthemachine.Keepyourface,
hands,feet,andanyotherpartofyourbodyor
clothingawayfrommovingorrotatingparts.
•Beforeadjusting,cleaning,repairing,andinspectingthe
machine,andbeforeuncloggingthedischargechute,stop
theengine,removethekey,andwaitforallmoving
partstostop.
•Beforeleavingtheoperatingposition,stoptheengine,
removetheignitionkey,andwaitforallmovingpartsto
stop.
•Ifashield,safetydevice,ordecalisdamaged,illegible,or
lost,repairorreplaceitbeforebeginningoperation.Also,
tightenanyloosefasteners.
•Donotsmokewhilehandlinggasoline.
•Donotusethemachineonaroof.
ClearingaCloggedDischarge
Chute
Handcontactwiththerotatingrotorbladesinsidethe
dischargechuteisthemostcommoncauseofinjury
associatedwithsnowthrowers.Neveruseyourhandtoclean
outthedischargechute.
Toclearthechute:
•Shuttheengineoff!
•Wait10secondstobesuretherotorbladeshavestopped
rotating.
•Alwaysuseaclean-outtool,notyourhands.
MaintenanceandStorage
•Checkallfastenersatfrequentintervalsforproper
tightnesstobesurethemachineisinsafeworking
condition.
•Neverstorethemachinewithfuelinthefueltankinsidea
buildingwhereignitionsourcesarepresent,suchashot
waterheaters,spaceheaters,orclothesdryers.Allowthe
enginetocoolbeforestoringinanyenclosure.
•Donottouchtheenginewhileitisrunningorsoonafter
ithasstoppedbecausetheenginemaybehotenoughto
causeaburn.
•Performonlythosemaintenanceinstructionsdescribedin
thismanual.Beforeperforminganymaintenance,service,
oradjustment,stoptheengineandremovethekey .If
majorrepairsareeverneeded,contactanAuthorized
ServiceDealer.
•Donotchangethegovernorsettingsontheengine.
•Whenstoringthemachineformorethan30days,drain
thefuelfromthefueltanktopreventapotentialhazard.
Storefuelinanapprovedfuelcontainer.Removethekey
fromtheignitionswitchbeforestoringthemachine.
•PurchaseonlygenuineTororeplacementpartsand
accessories.
•AlwaysrefertotheOperator’ sManualforimportantdetails
ifthemachineistobestoredforanextendedperiod.
•Maintainorreplacesafetyandinstructionlabels,as
necessary.
•Runthemachineafewminutesafterthrowingsnowto
preventfreeze-upoftherotorblades.
3
SafetyandInstructionalDecals
Important:Safetyandinstructiondecalsarelocatednearareasofpotentialdanger.Replacedamageddecals.
94-2577
1.Toengagetherotorblades,holdthecontrolbaragainst
thehandle.
2.Todisengagetherotorblades,releasethecontrolbar.
117-9103(Model38452only)
Orderpartno.117-6046
115-5660
1.Cuttingdismembermenthazards,impellerandauger—do
notplaceyourhandinthechute;removetheignitionkey
andreadtheinstructionsbeforeservicingorperforming
maintenance.
1.Warning—readthe
Operator'sManual.
2.Cutting/dismemberment
hazard,impeller—stopthe
enginebeforeleavingthe
machine.
3.Thrownobject
hazard—keepbystanders
asafedistancefromthe
machine.
4.Fuelspillhazard—donot
tipmachinebackward.
5.EngineswitchOn
6.EngineswitchOff
7.Primer
8.Pushtheprimerthree
timestoprimetheengine.
9.ReadtheOperator's
Manualbeforechecking
engineoillevel.
10.Plugthemachineinto
powertheelectricstarter.
117-9102(Model38451only)
Orderpartno.117-6036
1.Warning—readthe
Operator'sManual.
2.Cutting/dismemberment
hazard,impeller—stopthe
enginebeforeleavingthe
machine.
3.Thrownobject
hazard—keepbystanders
asafedistancefromthe
machine.
4.Fuelspillhazard—donot
tipmachinebackward.
5.EngineswitchOn
6.EngineswitchOff
7.Primer
8.Pushtheprimerthree
timestoprimetheengine.
9.ReadtheOperator's
Manualbeforechecking
engineoillevel.
4
Setup
LooseParts
Usethechartbelowtoverifythatallpartshavebeenshipped.
ProcedureDescription
1
2
Nopartsrequired
Dischargechute1
Chutehandle
Phillipsheadbolts3
Washers3
Locknuts3
1
UnfoldingtheHandle
NoPartsRequired
Procedure
1.Loosenthehandleknobs,pulloutthe“U”-shaped
handlelocksuntilyoucanmovethehandlefreely,and
rotatethehandletotheoperatingposition(Figure4).
Qty.
–
1
Important:Ensurethatyoudonotpinchorkink
thecontrolcable(Figure6).
Unfoldthehandle.
Installthedischargechute.
Figure5
Use
Figure4
1.“U”-shapedhandlelock(2)
2.Inserttheendofthe“U”-shapedhandlelockintothe
openholeinthehandleandtightenthehandleknobs
untiltheyaresnug(Figure5).
2.Handleknobs
Figure6
1.Controlcable
5
2
3
InstallingtheDischargeChute
Partsneededforthisprocedure:
1Dischargechute
1
Chutehandle
3Phillipsheadbolts
3Washers
3Locknuts
Procedure
Installthedischargechuteasshown(Figure7).
FillingtheEnginewithOil
NoPartsRequired
Procedure
Yourmachinedoesnotcomewithoilintheengine,butit
doescomewithabottleofoil.
Important:Beforestartingtheengine,lltheengine
withoil.
Note:Thebottleofoilmaycontainanounceortwomore
thantheenginerequires.Donotoverllorunderllthe
engine.
Maxll:20oz.(0.6l),type:automotivedetergentoilwithan
APIserviceclassicationofSJ,SL,orhigher.
Figure8belowtoselectthebestoilviscosityforthe
Use
outdoortemperaturerangeexpected:
Figure7
Figure8
1.Movethemachinetoalevelsurface.
2.Cleanaroundtheoilllcap(
Figure9
1.Oilllcap
6
Figure9).
3.Unscrewtheoilllcapandremoveit.
4.Withthemachineintheoperatingposition,carefully
pouroilintothecrankcase.Wait3minutesfortheoil
tosettleandaddenoughtobringittothepointof
overow .Thereshouldbeverylittle,ifany,oilleftin
thebottle.
Note:Youmaytipthemachineforward(handleup)
tomakeaddingoileasier.Remembertoreturnthe
machinetotheoperatingpositionbeforecheckingthe
oillevel.
Important:Donottipthemachinealltheway
forwardontoitsnose,orfuelmayleakoutofthe
machine.
5.Screwtheoilllcapintotheoilllholeandtightenit
securely.
ProductOverview
Figure10
4
AdjustingtheControlCable
NoPartsRequired
Procedure
RefertoAdjustingtheControlCableinMaintenance.
1.Dischargechute7.Electric-startbutton
2.Dischargechutehandle8.Ignitionkey
3.Fueltankcap
4.Controlbar10.Oildrainplug
5.Recoilstarthandle
6.Primer
(model38452only)
9.Chokelever
11.Oilllcap
Operation
Note:Determinetheleftandrightsidesofthemachine
fromthenormaloperatingposition.
DANGER
Gasolineisextremelyammableandexplosive.A
reorexplosionfromgasolinecanburnyouand
others.
•Topreventastaticchargefromignitingthe
gasoline,placethecontainerand/ormachine
onthegroundbeforelling,notinavehicleor
onanobject.
•Fillthetankoutdoorswhentheengineiscold.
Wipeupspills.
•Donothandlegasolinewhensmokingoraround
anopenameorsparks.
•Storegasolineinanapprovedfuelcontainer,out
ofthereachofchildren.
•Donottipthemachinebackwardwithfuelin
thefueltank;otherwise,fuelmayleakoutof
themachine.
7
FillingtheFuelTank
•Forbestresults,useonlyclean,fresh,unleadedgasoline
withanoctaneratingof87orhigher((R+M)/2rating
method).
•Oxygenatedfuelwithupto10%ethanolor15%MTBE
byvolumeisacceptable.
•DoNotuseethanolblendsofgasoline(suchasE15
orE85)withmorethan10%ethanolbyvolume.
Performanceproblemsand/orenginedamagemayresult
whichmaynotbecoveredunderwarranty.
•DoNotusegasolinecontainingmethanol.
•DoNotstorefueleitherinthefueltankorfuelcontainers
overthewinterunlessafuelstabilizerisused.
•DoNotaddoiltogasoline.
Figure12
1.Oilllcap
3.Unscrewtheoilllcapandremoveit.
4.Iftheoillevelislow,keepthemachineintheoperating
positionandcarefullypouroilintothecrankcase
untilthepointofoverow .Wait3minutesfortheoil
tosettleandaddenoughtobringittothepointof
overow .(Max.ll:20oz.(0.6l),type:automotive
detergentoilwithanAPIserviceclassicationofSJ,
SL,orhigher.)
Figure11
1.1/4inch(6mm)
Note:Forbestresults,purchaseonlythequantityofgasoline
thatyouexpecttousein30days.Otherwise,youmayadd
fuelstabilizertonewlypurchasedgasolinetokeepitfreshfor
upto6months.
CheckingtheEngineOilLevel
ServiceInterval:Beforeeachuseordaily—Checktheengine
oillevelandaddoilifnecessary.
Note:Youmaytipthemachineforward(handleup)
tomakeaddingoileasier.Remembertoreturnthe
machinetotheoperatingpositionbeforecheckingthe
oillevel.
Important:Donottipthemachinealltheway
forwardontoitsnose,orfuelmayleakoutofthe
machine.
5.Screwtheoilllcapintotheoilllholeandhand
tightenitsecurely.
StartingtheEngine
1.TurntheignitionkeyclockwisetotheOnposition
(
Figure13).
1.Movethemachinetoalevelsurface.
2.Cleanaroundtheoilllcap(Figure12).
Figure13
2.Pulloutthechokelever(Figure14andFigure15).
8