Lawn-Boy 10640, 10640C, 10641, 10641C, 10642 Operator's Manual

FormNo.3361-328RevB

20inMulching/RearBaggingLawn
Mower

ModelNo.10640—SerialNo.290000001andUp

ModelNo.10640C—SerialNo.290000001andUp

ModelNo.10641—SerialNo.290000001andUp

ModelNo.10641C—SerialNo.290000001andUp

ModelNo.10642—SerialNo.290000001andUp

ModelNo.10642C—SerialNo.290000001andUp

ModelNo.10643C—SerialNo.290000001andUp

ModelNo.10644C—SerialNo.290000001andUp

ModelNo.10645—SerialNo.290000001andUp

ModelNo.10646—SerialNo.290000001andUp

ModelNo.10647—SerialNo.290000001andUp

Operator'sManual

Introduction

Readthisinformationcarefullytolearnhowtooperate
andmaintainyourproductproperlyandtoavoidinjury
andproductdamage.Youareresponsibleforoperating
theproductproperlyandsafely.

YoumaycontactLawn-Boydirectlyat
www.Lawn-Boy.comforproductandaccessory
information,helpndingadealer,ortoregisteryour
product.

Wheneveryouneedservice,genuineLawn-Boyparts,
oradditionalinformation,contactanAuthorized
ServiceDealerorLawn-BoyCustomerServiceandhave
themodelandserialnumbersofyourproductready .
Figure1identiesthelocationofthemodelandserial
numbersontheproduct.Writethenumbersinthe
spaceprovided.

Figure1

1.Modelandserialnumberplate

ModelNo.

SerialNo.

Thismanualidentiespotentialhazardsandhas
safetymessagesidentiedbythesafetyalertsymbol
(Figure2),whichsignalsahazardthatmaycauseserious
injuryordeathifyoudonotfollowtherecommended
precautions.

Figure2

1.Safetyalertsymbol

Thismanualusestwowordstohighlightinformation.
Importantcallsattentiontospecialmechanical
informationandNoteemphasizesgeneralinformation
worthyofspecialattention.

Warning

CALIFORNIA

Proposition65Warning

Theengineexhaustfromthisproduct

containschemicalsknowntotheStateof

Californiatocausecancer,birthdefects,

orotherreproductiveharm.

Important:Thisengineisnotequippedwitha
sparkarrestermufer.ItisaviolationofCalifornia

©2008—Lawn-Boy®Inc.
8111LyndaleAvenueSouth
Bloomington,MN55420

Registeratwww.Lawn-Boy .com.

OriginalInstructions(EN)

PrintedintheUSA

AllRightsReserved

PublicResourceCodeSection4442touseoroperate
theengineonanyforest-covered,brush-covered,or
grass-coveredland.Otherstatesorfederalareas
mayhavesimilarlaws.

ThissparkignitionsystemcomplieswithCanadian
ICES-002.

Theenclosed

Engine Owner’ s Man ual

issupplied
forinformationregardingtheUSEnvironmental
ProtectionAgency(EPA)andtheCalifornia
EmissionControlRegulationofemissionsystems,
maintenance,andwarranty.Replacementsmaybe
orderedthroughtheenginemanufacturer.

Formodelswithstatedenginehorsepower,thegross
horsepoweroftheenginewaslaboratoryratedbythe
enginemanufacturerinaccordancewithSAEJ1940.
Asconguredtomeetsafety ,emission,andoperating
requirements,theactualenginehorsepoweronthisclass
oflawnmowerwillbesignicantlylower.

Donottamperwiththeenginecontrolsoralterthe
governorspeed;doingsomaycreateanunsafecondition
resultinginpersonalinjury.

Safety

ThislawnmowermeetsorexceedstheCPSCblade
safetyrequirementsforwalk-behindrotarylawnmowers
andtheB71.1specicationsoftheAmericanNational
StandardsInstituteineffectatthetimeofproduction.

Readandunderstandthecontentsofthismanual
beforeyoustarttheengine.

Thesafetyalertsymbol(Figure2)isusedtoalertyou
topotentialpersonalinjuryhazards.Obeyallsafety
messagesthatfollowthissymboltoavoidpossibleinjury
ordeath.Improperlyusingormaintainingthismower
couldresultininjuryordeath.Toreducethispotential,
complywiththefollowingsafetyinstructions.

Thefollowinginstructionshavebeenadaptedfromthe
ANSI/OPEIstandardB71.1-2003.

Thiscuttingmachineiscapableofamputating
handsandfeetandofthrowingobjects.Failure
toobservethefollowingsafetyinstructionscould
resultinseriousinjuryordeath.

GeneralOperation

•Read,understand,andfollowallinstructionsonthe
machineandinthemanual(s)beforestarting.

•Donotputhandsorfeetnearorunderthemachine.
Keepclearofthedischargeopeningatalltimes.

•Onlyallowresponsibleadults,whoarefamiliarwith
theinstructions,tooperatethismachine.

•Cleartheareaofobjectssuchasrocks,wire,toys,
etc.,whichcouldbethrownbytheblade.Stay
behindthehandlewhentheengineisrunning.

•Besuretheareaisclearofbystandersbefore
operating.Stopmachineifanyoneentersthearea.

•Donotoperatemachinebarefootedorwhilewearing
sandals.Alwayswearsubstantialfootwear.

•Donotpullmachinebackwardunlessabsolutely
necessary.Alwayslookdownandbehindbeforeand
whilemovingbackward.

•Neverdirectdischargedmaterialtowardanyone.
Avoiddischargingmaterialagainstawallor
obstruction.Materialmayricochetbacktoward
theoperator.Stopthebladewhencrossinggravel
surfaces.

•Donotoperatemachinewithouttheentiregrass
catcher,dischargeguard,rearguard,orothersafety
protectivedevicesinplaceandworking.

•Neverleavearunningmachineunattended.

•Stoptheengineandwaituntilthebladecomes
toacompletestopbeforecleaningthemachine,
removinggrasscatcher,oruncloggingthedischarge
guard.

•Operatemachineonlyindaylightorgoodarticial
light.

•Donotoperatemachinewhileundertheinuence
ofalcoholordrugs.

•Neveroperatemowerinwetgrass.Alwaysbesure
ofyourfooting;walk;neverrun.

•Disengagethedrivesystem,ifsoequipped,before
startingtheengine.

•Ifthemachineshouldstarttovibrateabnormally,
stoptheengineandcheckforthecauseimmediately.
Vibrationisgenerallyawarningoftrouble.

•Alwaysweareyeprotectionwhenoperatingmachine.

•Seemanufacturer’sinstructionsforproperoperation
andinstallationofaccessories.Onlyuseaccessories
approvedbythemanufacturer.

SlopeOperation

Slopesareamajorfactorrelatedtoslipandfallaccidents,
whichcanresultinsevereinjury.Operationonallslopes
requireextracaution.Ifyoufeeluneasyonaslope,do
notmowit.

2

•Mowacrossthefaceofslopes;neverupanddown.
Exerciseextremecautionwhenchangingdirection
onslopes.

•Watchforholes,ruts,bumps,rocks,orotherhidden
objects.Uneventerraincouldcauseaslipandfall
accident.Tallgrasscanhideobstacles.

•Donotmowonwetgrassorexcessivelysteepslopes.
Poorfootingcouldcauseaslipandfallaccident.

•Donotmowneardrop-offs,ditches,or
embankments.Youcouldloseyourfootingor
balance.

Children

Tragicaccidentscanoccuriftheoperatorisnotalertto
thepresenceofchildren.Childrenareoftenattractedto
themachineandthemowingactivity.Neverassume
thatchildrenwillremainwhereyoulastsawthem.

•Keepchildrenoutofthemowingareaandunder
thewatchfulcareofaresponsibleadultotherthan
theoperator.

•Bealertandturnmoweroffifachildentersthearea.

•Neverallowchildrentooperatethemachine.

•Useextracarewhenapproachingblindcorners,
shrubs,trees,orotherobjectsthatmayblockyour
viewofachild.

Service

SafeHandlingofGasoline

Toavoidpersonalinjuryorpropertydamage,use
extremecareinhandlinggasoline.Gasolineis
extremelyammableandthevaporsareexplosive.

•Extinguishallcigarettes,cigars,pipes,andother
sourcesofignition.

•Useonlyanapprovedgasolinecontainer.

•Neverremovegascaporaddfuelwiththeengine
running.Allowenginetocoolbeforerefueling.

•Neverrefuelthemachineindoors.

•Neverstorethemachineorfuelcontainerwhere
thereisanopename,spark,orpilotlightsuchas
onawaterheateroronotherappliances.

•Neverllcontainersinsideavehicleoronatruck
ortrailerbedwithaplasticliner.Alwaysplace
containersonthegroundawayfromyourvehicle
beforelling.

•Removegas-poweredequipmentfromthetruck
ortrailerandrefuelitontheground.Ifthisisnot

possible,thenrefuelsuchequipmentwithaportable
container,ratherthanfromagasolinedispenser
nozzle.

•Keepthenozzleincontactwiththerimofthefuel
tankorcontaineropeningatalltimesuntilfuelingis
complete.Donotuseanozzlelock-opendevice.

•Iffuelisspilledonclothing,changeclothing
immediately.

•Neveroverllfueltank.Replacegascapandtighten
securely.

Exhaustcontainscarbonmonoxide,an
odorless,deadlypoisonthatcankillyou.

Donotruntheengineindoorsorinanenclosed
area.

GeneralService

•Neveroperatemachineinaclosedarea.

•Keepallnutsandboltstighttobesuretheequipment
isinsafeworkingcondition.

•Nevertamperwithsafetydevices.Checktheir
properoperationregularly.

•Keepmachinefreeofgrass,leaves,orotherdebris
build-up.Cleanupoilorfuelspillageandremove
anyfuel-soakeddebris.Allowmachinetocool
beforestoring.

•Ifyoustrikeaforeignobject,stopandinspectthe
machine.Repair,ifnecessary,beforestarting.

•Nevermakeanyadjustmentsorrepairswiththe
enginerunning.Disconnectthesparkplugwire
andgroundagainstenginetopreventunintended
starting.

•Checkgrasscatchercomponentsandthedischarge
guardfrequentlyandreplacewithmanufacturer’s
recommendedparts,whennecessary.

•Mowerbladesaresharp.Wrapthebladeorwear
gloves,anduseextracautionwhenservicingthem.

•Donotchangetheenginegovernorsettingor
overspeedtheengine.

•Maintainorreplacesafetyandinstructionlabels,as
necessary.

3

SafetyandInstructionalDecals

Important:Safetyandinstructiondecalsarelocatednearareasofpotentialdanger.Replacedamaged

decals.

94-8072

108-4791

117-4143

1.Warning—readtheOperator’sManual.

2.Thrownobjecthazard—keepbystandersasafedistance
fromthemachine.

3.Cutting/dismembermenthazardofhandorfoot,mower
blade—disconnectthesparkplugwireandreadthe
instructionsbeforeservicingorperformingmaintenance.

4.Cutting/dismembermenthazardofhandorfoot,mower
blade—stayawayfrommovingpartsandkeepallguards
andshieldsinplace.

5.Cutting/dismembermenthazardofhandorfoot,mower
blade—donotmowupanddownslopes,onlymowacross;
stopthemowerandengine,pickupdebrisbeforeoperating;
lookbehindanddownwhenreversing.

104-7953

Electric-startmodelsonly

1.Warning—readtheOperator’sManualforinformationonchargingthebattery;containslead;donotdiscard.

2.ReadtheOperator’sManual.

4

Setup

Important:Removeanddiscardtheprotective

plasticsheetthatcoverstheengine.

1.UnfoldingtheHandle

Procedure

Foldingorunfoldingthehandleimproperlycan
damagethecables,causinganunsafeoperating
condition.

•Donotdamagethecableswhenfoldingor
unfoldingthehandle.

•Ifacableisdamaged,contactanAuthorized
ServiceDealer.

1.Removethehandleknobsfromthemowerhousing
(Figure3).

Important:Routethecablestotheoutsideof
thehandleasyouinstallthehandle.

Figure3

1.Handleknob(2)

2.Movethehandletotheoperatingposition.

3.Installandtightenthehandleknobsthatyou
removedinstep1(Figure3).

2.FillingtheEnginewithOil

Procedure

Yourmowerdoesnotcomewithoilintheengine,butit
doescomewithabottleofoil.

1.Removethedipstick(Figure4).

Figure4

2.Slowlypouroilintotheoillltubeuntiltheoillevel
reachestheFulllineonthedipstick(Figure4).Do
notoverll.(Max.ll:20oz.(0.59l),type:SAE30
detergentoilwithanAPIserviceclassicationofSF,
SG,SH,SJ,SL,orhigher.)

Note:Ifyouoverlltheengine,poursomeoilout
ofitasdirectedinChangingtheEngineOil.

3.Installthedipsticksecurely.

Important:

Change the engine oil after the r st

5 operating hour s

;changeityearlythereafter.

RefertoChangingtheEngineOil.

3.InstallingtheFuse

Procedure

Electric-startmodelsonly

Yourmowercomeswitha40-ampfusethatprotectsthe
electricstarter.

Important:Youcannotstartthemowerwiththe
electricstarterorchargethebatteryunlessyou
installthefuse.

1.Unclipbothendsofthebatterycoverandremoveit
(Figure5).

5