COMMERCIAL21
ForSerialNos.
850,000&Higher
PartNo.4500-674Rev.A
WARNING
CALIFORNIA
Proposition65Warning
Theengineexhaustfromthisproduct
containschemicalsknowntotheStateof
Californiatocausecancer,birthdefects,or
otherreproductiveharm.
Important:Theengineinthisproductisnot
equippedwithasparkarrestermufer.Itisa
violationofCaliforniaPublicResourceCode
(CPRC)Section4442touseoroperatethis
engineonanyforest-covered,brush-covered,or
grass-coveredlandasdenedinCPRC4126.
Otherstatesorfederalareasmayhavesimilar
laws.
Toacquireasparkarresterforyourunit,seeyour
EngineServiceDealer.
ThissparkignitionsystemcomplieswithCanadian
ICES-002Cesystèmed’allumageparètincellede
vèhiculeestconformeàlanormeNMB-002du
Canada.
TheenclosedEngineOwner’sManualis
suppliedforinformationregardingTheU.S.
EnvironmentalProtectionAgency(EPA)and
theCaliforniaEmissionControlRegulationof
emissionsystems,maintenanceandwarranty.
KeepthisengineOwner’sManualwithyourunit.
ShouldthisengineOwner’sManualbecome
damagedorillegible,replaceimmediately.
Replacementsmaybeorderedthroughthe
enginemanufacturer.
Exmarkreservestherighttomakechangesor
addimprovementstoitsproductsatanytime
withoutincurringanyobligationtomakesuch
changestoproductsmanufacturedpreviously.
Exmark,oritsdistributorsanddealers,accept
noresponsibilityforvariationswhichmaybe
evidentintheactualspecicationsofitsproducts
andthestatementsanddescriptionscontained
inthispublication.
©2010—ExmarkMfg.Co.,Inc.
IndustrialParkBox808
Beatrice,NE68310
2
Contactusatwww.Exmark.com.
PrintedintheUSA
AllRightsReserved
Introduction
CONGRATULATIONSonthepurchaseofyour
ExmarkMower.Thisproducthasbeencarefully
designedandmanufacturedtogiveyouamaximum
amountofdependabilityandyearsoftrouble-free
operation.
Thismanualcontainsoperating,maintenance,
adjustment,andsafetyinstructionsforyourExmark
mower.
BEFOREOPERATINGYOURMOWER,
CAREFULLYREADTHISMANUALINITS
ENTIRETY.
Byfollowingtheoperating,maintenance,andsafety
instructions,youwillprolongthelifeofyourmower,
maintainitsmaximumefciency,andpromotesafe
operation.
Ifadditionalinformationisneeded,orshouldyou
requiretrainedmechanicservice,contactyour
authorizedExmarkequipmentdealerordistributor.
Exmarkpartsmanualsareavailableonlineat
http://www.exmark.com/manuals.htm.
AllExmarkequipmentdealersanddistributorsare
keptinformedofthelatestmethodsofservicing
andareequippedtoprovidepromptandefcient
serviceintheeldorattheirservicestations.They
carryamplestockofservicepartsorcansecurethem
promptlyforyoufromthefactory.
AllExmarkpartsarethoroughlytestedandinspected
beforeleavingthefactory,however,attentionis
requiredonyourpartifyouaretoobtainthefullest
measureofsatisfactionandperformance.
Wheneveryouneedservice,genuineExmarkparts,
oradditionalinformation,contactanAuthorized
ServiceDealerorExmarkCustomerServiceandhave
themodelandserialnumbersofyourproductready.
Figure1identiesthelocationofthemodelandserial
numbersontheproduct.Writethenumbersinthe
spaceprovided.
Figure1
1.Modelandserialnumberlocation
ModelNo.
SerialNo.
3
Contents
Introduction...........................................................3
Safety.....................................................................5
SafetyAlertSymbol.........................................5
SafeOperatingPractices..................................5
SafetyandInstructionalDecals.......................9
Specications.......................................................12
ModelNumbers............................................12
Systems.........................................................12
Dimensions...................................................12
ProductOverview................................................13
Operation.............................................................13
Controls........................................................13
Pre-Start........................................................15
OperatingInstructions..................................15
Maintenance.........................................................22
RecommendedMaintenanceSchedule(s)...........22
PeriodicMaintenance.......................................23
CheckEngineOilLevel.................................23
CheckingtheBladeBrakeClutch(Blade
BrakeClutchOnly)....................................23
ChecktheMowerBlade.................................24
CheckforLooseHardware............................25
ChecktheBladeBrakeClutchBail
Operation(BladeBrakeClutchUnits
Only).........................................................25
ServiceAirFilter(KawasakiUnits).................26
ServiceAirFilter(EC21ASHNUnits)............26
ServiceAirFilter(EC21HNBBCand
EC21HNBBCXUnits)..............................27
ChangeEngineOil........................................28
ChangeOilFilter(EC21KA,
EC21KABBC,EC21KAX,
EC21KAY ,EC21KABBCX,
EC21KABBCY ,EC21KACA,and
EC21KABBCCA).....................................29
CheckConditionOfBelt(Self-Propelled
UnitsOnly)...............................................29
CheckSparkPlugs.........................................29
EmptyingtheFuelTankandCleaningthe
FuelFilter..................................................29
Adjustments.....................................................30
AdjustingtheSelf-PropelDrive
(Self-PropelledUnitsOnly)........................30
AdjustingtheBladeBrakeCable(Blade
BrakeClutchUnitsOnly)...........................31
Cleaning...........................................................32
CleanGrassBuild-UpUnderDeck................32
CleaningtheDischargeTunneland
Plug...........................................................32
CleaningUndertheBeltCover
(Self-PropelledUnitsOnly)........................33
CleaningtheBladeBrakeClutchShield
(BladeBrakeClutchUnitsOnly)................33
CleaningUndertheCoverPlate
(Non-BladeBrakeClutchUnits
Only).........................................................33
WasteDisposal..............................................34
Storage.................................................................35
PreparingtheFuelSystem..............................35
PreparingtheEngine.....................................35
GeneralStorageInformation.........................35
RemovingtheLawnMowerfrom
Storage......................................................35
Troubleshooting...................................................36
4
Safety
Safety
SafetyAlertSymbol
ThislawnmowermeetsorexceedstheConsumer
ProductSafetyCommissionbladesafety
requirementsforwalk-behindrotarymowersand
theB71.4specicationsoftheAmericanNational
StandardsInstituteineffectatthetimeofproduction.
Exmarkdesignedandtestedthislawnmowertooffer
reasonablysafeservice;however,failuretocomply
withthefollowinginstructionsmayresultinpersonal
injury.
ThisSafetyAlertSymbol(Figure2)isusedbothin
thismanualandonthemachinetoidentifyimportant
safetymessageswhichmustbefollowedtoavoid
accidents.
Thissymbolmeans:ATTENTION!BECOME
ALERT!YOURSAFETYISINVOLVED!
Figure2
1.Safetyalertsymbol
Thesafetyalertsymbolappearsaboveinformation
whichalertsyoutounsafeactionsorsituations
andwillbefollowedbythewordDANGER,
WARNING,orCAUTION.
DANGER:Whitelettering/Redbackground.
Indicatesanimminentlyhazardoussituationwhich,if
notavoided,Willresultindeathorseriousinjury.
WARNING:Blacklettering/Orangebackground.
Indicatesapotentiallyhazardoussituationwhich,if
notavoided,Couldresultindeathorseriousinjury.
CAUTION:Blacklettering/Yellowbackground.
Indicatesapotentiallyhazardoussituationwhich,if
notavoided,Mayresultinminorormoderateinjury.
Thismanualusestwootherwordstohighlight
information.Importantcallsattentiontospecial
mechanicalinformationandNoteemphasizes
generalinformationworthyofspecialattention.
SafeOperatingPractices
Training
•ReadtheOperator’sManualandothertraining
material.Iftheoperator(s)ormechanic(s)can
notreadEnglishitistheowner’sresponsibilityto
explainthismaterialtothem.
•Becomefamiliarwiththesafeoperationofthe
equipment,operatorcontrols,andsafetysigns.
•Alloperatorsandmechanicsshouldbetrained.
Theownerisresponsiblefortrainingtheusers.
•Neverletchildrenoruntrainedpeopleoperate
orservicetheequipment.Localregulationsmay
restricttheageoftheoperator.
•Onlyadultsandmatureteenagersshouldoperate
amower,andevenmatureteenagersshouldhave
adultsupervision.Besureateenager:
1.hasreadandunderstandstheOperator’s
Manualandrecognizestherisksinvolved;
2.issufcientlymaturetousecaution;and
3.isofsufcientsizeandweighttooperate
thecontrolscomfortablyandtomanagethe
mowerwithouttakingrisks.
•Theowner/usercanpreventandisresponsible
foraccidentsorinjuriesoccurringtohimselfor
herself,otherpeopleorproperty.
Preparation
•Evaluatetheterraintodeterminewhataccessories
andattachmentsareneededtoproperlyand
safelyperformthejob.Onlyuseaccessoriesand
attachmentsapprovedbyExmark.
•Wearappropriateclothingincludingsafetyglasses,
substantialfootwear,longtrousers,andhearing
protection.DoNotoperatewhenbarefootor
whenwearingopensandals.Longhair,loose
clothingorjewelrymaygettangledinmoving
parts.
CAUTION
Thismachineproducessoundlevelsin
excessof85dBAattheoperator’searand
cancausehearinglossthroughextended
periodsofexposure.
Wearhearingprotectionwhenoperatingthis
machine.
5
Safety
•Inspecttheareawheretheequipmentistobe
usedandremoveallrocks,toys,sticks,wires,
bones,andotherforeignobjectswhichcanbe
thrownbythemachineandmaycausepersonal
injurytotheoperatororbystanders.
DANGER
Incertainconditionsgasolineisextremely
ammableandvaporsareexplosive.
Areorexplosionfromgasolinecanburn
you,others,andcausepropertydamage.
•Fillthefueltankoutdoorsinanopen
area,whentheengineiscold.Wipeup
anygasolinethatspills.
•Neverrellthefueltankordrainthe
machineindoorsorinsideanenclosed
trailer.
•DoNotllthefueltankcompletely
full.Addgasolinetothefueltankuntil
thelevelis1/4to1/2inch(6–13mm)
belowthebottomofthellerneck.This
emptyspaceinthetankallowsgasoline
toexpand.
•Neversmokewhenhandlinggasoline,
andstayawayfromanopenameor
wheregasolinefumesmaybeignitedby
spark.
•Storegasolineinanapprovedcontainer
andkeepitoutofthereachofchildren.
•Addfuelbeforestartingtheengine.
Neverremovethecapofthefueltankor
addfuelwhenengineisrunningorwhen
theengineishot.
•Iffuelisspilled,DoNotattempttostart
theengine.Moveawayfromtheareaof
thespillandavoidcreatinganysourceof
ignitionuntilfuelvaporshavedissipated.
•DoNotoperatewithoutentireexhaust
systeminplaceandinproperworking
condition.
DANGER
Incertainconditionsduringfueling,static
electricitycanbereleasedcausingaspark
whichcanignitegasolinevapors.Areor
explosionfromgasolinecanburnyouand
othersandcausepropertydamage.
•Alwaysplacegasolinecontainersonthe
groundawayfromyourvehiclebefore
lling.
•DoNotllgasolinecontainersinsidea
vehicleoronatruckortrailerbedbecause
interiorcarpetsorplastictruckbedliners
mayinsulatethecontainerandslowthe
lossofanystaticcharge.
•Whenpractical,removegas-powered
equipmentfromthetruckortrailerand
refueltheequipmentwithitswheelson
theground.
•Ifthisisnotpossible,thenrefuelsuch
equipmentonatruckortrailerfroma
portablecontainer,ratherthanfroma
gasolinedispensernozzle.
•Ifagasolinedispensernozzlemustbe
used,keepthenozzleincontactwiththe
rimofthefueltankorcontaineropening
atalltimesuntilfuelingiscomplete.
WARNING
Gasolineisharmfulorfatalifswallowed.
Long-termexposuretovaporshascaused
cancerinlaboratoryanimals.Failuretouse
cautionmaycauseseriousinjuryorillness.
•Avoidprolongedbreathingofvapors.
•Keepfaceawayfromnozzleandgas
tank/containeropening.
•Keepawayfromeyesandskin.
•Neversiphonbymouth.
•Checkthattheoperator’spresencecontrols,
safetyswitches,andshieldsareattachedand
functioningproperly.DoNotoperateunlessthey
arefunctioningproperly.
6
Safety
Operation
WARNING
Operatingengineparts,especiallythe
mufer,becomeextremelyhot.Severeburns
canoccuroncontactanddebris,suchas
leaves,grass,brush,etc.cancatchre.
•Allowengineparts,especiallythemufer,
tocoolbeforetouching.
•Removeaccumulateddebrisfrommufer
andenginearea.
•Installandmaintaininworkingordera
sparkarresterbeforeusingequipment
onforest-covered,grass-covered,or
brush-coveredunimprovedland.
WARNING
Engineexhaustcontainscarbonmonoxide,
whichisanodorlessdeadlypoisonthatcan
killyou.
DoNotrunengineindoorsorinasmall
connedareawheredangerouscarbon
monoxidefumescancollect.
•Operateonlyindaylightorgoodarticiallight,
keepingawayfromholesandhiddenhazards.
•Starttheenginecarefullyaccordingtoinstructions
withfeetwellawayfromtheblade.
•Neverraisedeckwithbladesrunning.
•Neveroperatethemowerwithdamagedguards,
shields,orcovers.Alwayshavesafetyshields,
guards,switchesandotherdevicesinplaceandin
properworkingcondition.
•Nevermowwithoutthedischargedoor.DoNot
operateunlessthedischargedoor,grasscatcher,
mulchplug,orreardischargechutekitareinplace
andworkingproperly.
•Grasscatchercomponentsaresubjecttowear,
damageanddeterioration,whichcouldexpose
movingpartsorallowobjectstobethrown.
Frequentlycheckthecomponentsandreplace
themwiththemanufacturer’srecommendedparts
whennecessary.
•DoNotchangetheenginegovernorsettingor
overspeedtheengine.
•Neverattempttomakewheelheightadjustments
whiletheengineisrunning.
•Stopengine,waitforallmovingpartstostop,
removethesparkplugwire(s).
–Beforechecking,cleaningorworkingonthe
mower.
–Afterstrikingaforeignobjectorabnormal
vibrationoccurs(inspectthemowerfor
damageandmakerepairsbeforerestarting
andoperatingthemower).
–Beforeclearingblockages.
–Wheneveryouleavethemower.
•Stopengine,waitforallmovingpartstostop:
–Beforerefueling.
–Beforedumpingthegrasscatcher.
–Beforemakingheightadjustments.
WARNING
Hands,feet,hair,clothing,oraccessoriescan
becomeentangledinrotatingparts.Contact
withtherotatingpartscancausetraumatic
amputationorseverelacerations.
•DoNotoperatethemachinewithout
guards,shields,andsafetydevicesin
placeandworkingproperly.
•Keephands,feet,hair,jewelry,orclothing
awayfromrotatingparts.
•Keepclearofthedischargeopeningatalltimes.
•Thismowerwasdesignedforoneoperator
only.Keepallothersawayfrommowerduring
operation.
•DONOToperatethemowerwhenpeople,
especiallychildren,orpetsareinthearea.
•Bealert,slowdownandusecautionwhenmaking
turns.Lookbehindandtothesidebefore
changingdirections.
•Stoptheblades,slowdown,andusecautionwhen
crossingsurfacesotherthangrassandwhen
transportingthemowertoandfromtheareato
bemowed.
•Beawareofthemowerdischargepathanddirect
dischargeawayfromothers.
7
Safety
•DoNotoperatethemowerundertheinuence
ofalcoholordrugs.
•Useextremecarewhenloadingorunloadingthe
machineintoatrailerortruck.
•Usecarewhenapproachingblindcorners,shrubs,
trees,orotherobjectsthatmayobscurevision.
SlopeOperation
UseExtremecautionwhenmowingand/orturning
onslopesaslossoftractionand/ortip-overcould
occur.Theoperatorisresponsibleforsafeoperation
onslopes.
DANGER
Operatingonwetgrassorsteepslopescan
causeslidingandlossofcontrol.Lossof
controland/orlossofoperator’sfooting
couldresultinafallwithanarmorleg
gettingunderthemowerorenginedeck
whichmayresultinseriousinjury,deathor
drowning.
•Mowacrossslopes,neverupanddown.
•DoNotmowslopeswhengrassiswet.
•DoNotmowneardrop-offsornearwater.
•DoNotmowexcessivelysteepslopes.
•Reducespeedanduseextremecaution
onslopes.
•Avoidsuddenturnsorrapidspeed
changes.
•Whenfeasible,avoidoperatingtheequipmentin
wetgrass.
•Progressivelygreatercareisneededastheslope
increases.
•Removeormarkobstaclessuchasrocks,tree
limbs,etc.fromthemowingarea.Tallgrasscan
hideobstacles.
•Watchforditches,holes,rocks,dipsandrisesthat
changetheoperatingangle,asroughterraincould
overturnthemachine.
•Useextremecarewithgrasscatchersor
attachments.Thesecanchangethestabilityofthe
machineandcauselossofcontrol.
MaintenanceandStorage
•Stoptheengineandremovethesparkplug
wire(s).Waitforallmovementtostopbefore
adjusting,cleaningorrepairing.
•Keepengineandengineareafreefrom
accumulationofgrass,leaves,excessivegrease
oroil,andotherdebriswhichcanaccumulate
intheseareas.Thesematerialscanbecome
combustibleandmayresultinare.
•LetenginecoolbeforestoringandDoNotstore
nearameoranyenclosedareawhereopenpilot
lightsorheatappliancesarepresent.
•Shutofffuelwhilestoringortransporting.Do
Notstorefuelnearamesordrainindoors.
•Parkmachineonlevelground.Neverallow
untrainedpersonneltoservicemachine.
•Removesparkplugwirebeforemakingany
repairs.
•Usecarewhencheckingblades.Wraptheblade(s)
orweargloves,andusecautionwhenservicing
them.Onlyreplacedamagedblades.Never
straightenorweldthem.
•Keephandsandfeetawayfrommovingparts.
Ifpossible,DoNotmakeadjustmentswiththe
enginerunning.
•Keepallguards,shieldsandallsafetydevicesin
placeandinsafeworkingcondition.
•Checkallboltsfrequentlytomaintainproper
tightness.
•Frequentlycheckforwornordeteriorating
componentsthatcouldcreateahazard.
•Allreplacementpartsmustbethesameas
orequivalenttothepartssuppliedasoriginal
equipment.
8
Safety
SafetyandInstructionalDecals
•Keepallsafetysignslegible.Removeallgrease,
dirtanddebrisfromsafetysignsandinstructional
labels.
•Replaceallworn,damaged,ormissingsafety
signs.
•Whenreplacementcomponentsareinstalled,be
surethatcurrentsafetysignsareafxedtothe
replacedcomponents.
•Ifanattachmentoraccessoryhasbeeninstalled,
makesurecurrentsafetysignsarevisible.
•Newsafetysignsmaybeobtainedfrom
yourauthorizedExmarkequipmentdealeror
distributororfromExmarkMfg.Co.Inc.
•Safetysignsmaybeafxedbypeelingoffthe
backingtoexposetheadhesivesurface.Apply
onlytoaclean,drysurface.Smoothtoremove
anyairbubbles.
•Familiarizeyourselfwiththefollowingsafetysigns
andinstructionlabels.Theyarecriticaltothesafe
operationofyourExmarkcommercialmower.
68-7410
94-8072
103-6328
EC21KABBCX
1.Choke4.Slow
2.Fast5.Engine—stop
3.Continuousvariable
setting
109-8191
EC21KABBC,EC21KAY ,EC21KA,EC21KABBCCA,
EC21KACA,EC21KAX,EC21KABBCY
9
Safety
109-8194
EC21KABBCY ,EC21KABBCCA
1.Fast
3.Slow
2.Continuousvariable
setting
4.Engine—stop
109-9317
116-1922
116-2685
117-2718
116-1900
10
Safety
116-2737
11
Specications
Specications
ModelNumbers
SerialNos:850,000andHigher
EC21ASHN;EC21ASKA;EC21ASKAP;EC21HNBBC;EC21HNBBCX;EC21KA;EC21KACA;EC21KAX;
EC21KAY;EC21KABBC;EC21KABBCCA;EC21KABBCX;EC21KABBCY
Systems
Engine
•EngineSpecications:SeeyourEngineOwner’s
Manual
•RPM:3000(NoLoad):EC21ASHN
•RPM:3300(NoLoad):Allunitsexcept
EC21ASHN
FuelSystem
•Capacity:
EC21ASHN,EC21KACA,EC21KABBCCA,
EC21ASKAandEC21ASKAPUnits:
2.0qt(1.9L)
Allotherunits:4.0qt(3.8L)
•TypeofFuel:Regularunleadedgasoline,87
octaneorhigher;containingnomorethan10%
methanolorethanol.
•FuelFilter:Non-replaceable,intank
•FuelShut-OffValve:
EC21KACA,EC21KABBCCA,EC21ASKAand
EC21ASKAPUnitsDoNothaveashut-offvalve.
Allotherunitshaveashut-offvalve.
SafetyInterlockSystem
ForunitswithoutaBladeBrakeClutch:Operator
musthavethebladecontrolbaildepressedtostart
theengine.Releasingthebladecontrolbailwillcause
theenginetostop.
Transmission(SelfPropelledUnits)
Variable
SpeedRange:0–4.2mph(6.8km/hr)
CuttingDeck
•CuttingWidth:21inches(53.3cm)
•BladeBrake:Whenthebladeengagementcontrol
ismovedtothedisengagedpositionafriction
brakepadstopstherotationoftheblades.
•BladeSize:(1ea.):20.88inches(53.0cm)
•Deck:21inchesrigid.Deckdesignallowsfor
bagging,mulchingorreardischarge.
•CuttingHeightAdjustment:
Adjustsfrom1inch(2.5cm)to41/2inches(11.4
cm)in1/2inch(1.3cm)increments.
•MulchingKit:StandardonEC21KA,
EC21KABBC,EC21HNBBC,EC21KACA,
EC21KABBCCA,EC21KAX,EC21KAY ,
EC21KABBCX,andEC21KABBCYUnits
•RearDischargeKit:Optional
Dimensions
CurbWeight:
98-122lb(44-55kg)Weightsmayvaryslightly
dependingonengineoption.
OverallWidth:
22inches(55.9cm)
OverallLengthandHeightat
21/2inchCuttingHeight:
HandleSettingLengthHeight
High61.00inches
(154.9cm)
39.00inches
(99.1cm)
Medium
63.00inches
(160.0cm)
37.50inches
(95.3cm)
Low
64.50inches
(163.8cm)
35.00inches
(88.9cm)
12
Operation
ProductOverview
Figure3
1.Grassbag
5.Dischargedoor
2.Handle6.Rearwheelheight
adjustment
3.DriveBail
(Self-PropelledUnits
Only)
7.Frontwheelheight
adjuster
4.BladeControlBail
Operation
Note:Determinetheleftandrightsidesofthe
machinefromthenormaloperatingposition.
Controls
BladeControlBail
LocatedontheupperhandleasshowninFigure4.
Whenthebladecontrolbailisdepressed,thesystem
sensesthattheoperatorisinthenormaloperator’s
position.
•ForUnitswithaBladeBrakeClutch:When
thebladecontrolbailisreleased,thesystem
sensesthattheoperatorhasmovedfromthe
normaloperatingpositionandwillstoptheblade.
•ForUnitswithoutaBladeBrakeClutch:
Whenthebladecontrolbailisreleased,thesystem
sensesthattheoperatorhasmovedfromthe
normaloperatingpositionandwillkilltheengine.
Figure4
BladeBrakeUnitShown
1.Bladecontrollocklever(BladeBrakeUnitsOnly)
2.Bladecontrolbail
3.Handle
4.Drivebail(Self-PropelledUnitsOnly)
Self-PropelDriveBail(Self-Propelled
UnitsOnly)
LocatedontheupperhandleasshowninFigure4.
Whentheself-propeldrivebailissqueezed,the
unitwillmoveforwardbasedonhowfarthebail
isdepressedtowardthehandle.Whenthisbailis
releasedtheunitwillstopmoving.
13
Operation
Throttle-ChokeLever(EC21KABBCX,
EC21KABBCY,EC21KABBCCA)
Locatedontheleftsideoftheengineasshownin
Figure11.
Theleverisusedtocontrolenginespeed.Moving
thethrottletothefullforward(Choke)positionwill
placetheleverinthechokeposition.Thechokeaids
instartingacoldengine.Movingthethrottlecontrol
forwardwillincreaseenginespeedandmovingitto
therearwilldecreaseenginespeed.
Thethrottle-chokecontrolalsoincludesanengine
killposition.Movingtheleverintothefullrearward
(Stop)positionwillkilltheengine.
Note:Someunitswillnothavethechokeposition.
ChokeControl(EC21HNBBC,
EC21HNBBCX)
Locatedonthefrontleftsideoftheengineasshown
inFigure10.
Thechokeaidsinstartingacoldengine.Pulling
outwardwillplacethecontrolinthechokeposition.
Pushingthecontrolinwardshutsoffthechoke.
BladeControlLockLever(Blade
BrakeClutchUnitsOnly)
Thebladecontrollockleverislocatedontheright
sideofthehandlenexttotheBladeControlBailas
showninFigure4.
Movingthebladecontrollockleverintothefull
forwardpositionreleasesthebladecontrolbail.
Squeezingthebladecontrolbailagainstthehandle
engagestheblade.Releasingthebladecontrolbail
automaticallydisengagestheblade.Thebladecontrol
lockleverwillresettolockthebladecontrolbail.
EngineStopSwitch
Locatedontheleftsideoftheengineinfrontof
thefueltankasshowninFigure5.Theenginestop
switchisusedonEC21HNBBC,EC21HNBBCX,
andEC21KABBC(seeFigure10andFigure11).
Presstheswitchto“STOP”tokilltheengine.Press
“|”beforestartingtheengine.
Figure5
Clearplasticcoverremovedforclarity
1.Enginestopswitch
2.Press“STOP”tokillengine
3.Press“I”beforestartingengine
FuelShut-OffValve
Thefuelshutoffvalveislocatedbetweenthe
carburetorandthefueltank.Thefuelshutoffvalve
shutsofftheowoffuelwhenthemachinewill
notbeusedforafewdays,whenparkinginsidea
building,andduringtransporttoandfromthejob.
Figure6
KawasakiUnit
1.Fuelvalve
14
Operation
Figure7
HondaUnit
1.Aircleaner3.Fuelcap
2.Fuelvalve
OnEC21KA,EC21KABBC,EC21KAX,EC21KAY ,
EC21KABBCX,EC21KABBCY ,andEC21ASHN
units,rotatethevalve1/4turnclockwisetoshutoff
fuel.Rotatethevalve1/4turncounterclockwiseto
turnonfuel.
Figure8
1.Rotateclockwisetoclose
2.Rotatecounterclockwisetoopen
OnEC21HNBBCandEC21HNBBCXunits,the
fuelshutoffvalveislocatedontheengineasshown
inFigure9.Rotate1/4turnclockwisetoshutoff
fuel.Rotatethevalve1/4turncounterclockwiseto
turnonfuel.
Figure9
1.Fuelvalve
Pre-Start
Fillfueltank.Forbestresultsuseonlyclean,fresh
regulargradeunleadedgasolinewithanoctanerating
of87orhigher.Toensurefreshness,purchaseonly
thequantityofgasolinethatyouexpecttousein
30days.Usingunleadedgasolineresultsinfewer
combustiondepositsandlongerenginelife.See
EngineOwner’sManual.
Important:Neverusemethanol,gasoline
containingmethanol,gasoholcontainingmore
than10%ethanol,premiumgasoline,orwhite
gasbecausethefuelsystemcouldbedamaged.
DoNotaddoiltogasoline.
DoNotusegasolinethathasbeenstoredsincethe
lastmowingseasonorlonger.
DoNotoverllfueltank.Neverllthefueltankso
thatthefuellevelrisesabovealevelthatis1/2inch
belowthebottomofthellernecktoallowforfuel
expansionandpreventfuelspillage.
Makesureyouunderstandthecontrols,their
locations,theirfunctions,andtheirsafety
requirements.
RefertotheMaintenancesectionandperformallthe
necessaryinspectionandmaintenancesteps.
OperatingInstructions
HandleAdjustment
Theheightofthehandlecanbeadjustedfor
comfortableoperation.Standbehindthehandleto
determinetheheight.Toadjustthehandleheight,
positionthehardwareintooneofthethreeholesin
thehandlebracket.
OpentheFuelShut-OffValve
Rotatethevalve1/4turncounterclockwisetoturn
thefuelon(ifequipped).
StartingtheEngine
1.Connectthewiretothesparkplug.
15
Operation
Figure10
Hondaunit
1.Mufer
2.Oilll/dipstick
3.Fueltankcap(fueltankvaries)
4.Recoilstarterhandle(locatedonhandlebarforzone
startunits)
5.Enginestopswitch(ifequipped)
6.Airlter
7.Choke
8.Sparkplug
Figure11
Kawasakiunitswithlargefueltankshown
1.Mufer
2.Oilll/dipstick
3.Recoilstarterhandle
4.Fueltankcap(fueltankvaries)
5.Enginestopswitch(ifequipped)
6.Throttle-Choke(ifequipped)
7.ThrottleOnly(ifequipped)
8.Oillter
9.Aircleaner
10.Primerbulb(ifequipped)
11.Sparkplug
2.Openthefuelvalve.
3.ForEC21KABBCXUnit:Movethechoke
controltotheChokeposition
ForEC21KABBCUnit:Turntheenginestop
switchto“|”(seeFigure5).
ForEC21KABBC,EC21KABBCCA,
EC21KABBCY,EC21KAX,EC21KACA,and
EC21KAYUnits:Presstheprimerbulbtwo
times(seeFigure12).
Figure12
ForEC21HNBBCandEC21HNBBCXUnits:
Turntheenginestopswitchto“|”andpull
outwardonthechokecontrol.
Note:DoNotusethechokewhentheengine
iswarmedup.
4.ForunitswithoutaBladeBrakeClutch:Hold
thebladecontrolbailtothehandle.
5.Pullthestarterhandlelightlyuntilyoufeel
resistance,thenpullitsharply.Allowtheropeto
returnslowly.
6.ForEC21KABBCCA,EC21KABBCXand
EC21KABBCYUnits:Whentheenginestarts,
movethethrottlecontroltotheFastposition.
7.ForEC21HNBBCandEC21HNBBCXUnits:
Graduallypushinthechokecontrolastheengine
warmsup.
StoppingtheEngine
1.Bringtheunittoafullstop.
•ForunitswithoutaBladeBrakeClutch:
Releasethebladecontrolbail.Boththe
engineandthebladeshouldstopwithinthree
seconds.
•ForunitswithaBladeBrakeClutch:
Releasethebladecontrolbailandtheblade
controllockleverresets.Thebladeshould
stopwithinthreeseconds;theenginewill
continuetorun.
16
Operation
EC21KABBCCA,EC21KABBCX,and
EC21KABBCY:Movethethrottletothe
(Stop)positiontokilltheengine.
EC21KABBC,EC21HNBBCX,and
EC21HNBBC:Presstheswitchto“STOP”
tokilltheengine(seeFigure5).
Note:Ifthebladedoesnotstopwithin3
secondsafterreleasingthebladecontrolbail,
contactanAuthorizedServiceDealer.
2.Closethefuelshut-offvalve,ifequipped,when
themachinewillnotbeinuseforafewdays,
whentransporting,orwhentheunitisparked
insideabuilding.
OperatingtheSelf-PropelDrive
(Self-PropelledUnitsOnly)
Thelawnmowerisvariablespeed,themoreyou
squeezethedrivebailthefasterthemachinetravels.
1.Starttheengine.
2.Squeezethedrivebailagainstthehandle(see
Figure4).
Note:Youcanvarythegroundspeedby
increasingordecreasingthedistancebetween
thegroundspeedcontrolbailandthehandle.
Lowerthecontrolbailtodecreasetheground
speedwhenyouaremakingaturnorifthelawn
mowerismovingtoofastforyou.Ifyoulower
thecontrolbailtoofarthelawnmowerstops
self-propelling.Squeezethegroundspeedcontrol
bailclosertothehandletoincreasetheground
speed.Whenyouholdthegroundspeedcontrol
bailtightagainstthehandle,thelawnmower
self-propelsatthemaximumgroundspeed.
Releasethedrivebailtostopmovingwhenyou
usethelawnmowerfortrimmingorwhenever
youleavethelawnmower.
3.Todisengagetheself-propeldrive,releasethe
drivebail.
Note:Themowercomeswithfreewheeling
clutcheswhichmakeiteasiertopullthemower
rearward.Todisengagetheclutches,youmay
needtopushthemowerforwardoneinch(2.5
cm)ormoreafteryoureleasetheself-propel
drivebail.
OperatingtheBladeControlBail
(UnitsWithoutBladeBrakeClutch)
1.Squeezethebladecontrolbailagainstthehandle.
2.Starttheengine.
3.Whenthebladecontrolbailissqueezedagainst
thehandle,thebladeshouldengage.
4.Releasethebladecontrolbail.Boththeengine
andthebladeshouldstop.
OperatingtheBladeControlLever
(BladeBrakeClutchUnitsOnly)
1.Starttheengine.
2.Pushandholdthebladecontrollockleverforward
toreleasethebladecontrolbail(Figure13).
Figure13
1.Bladecontrollocklever
4.Pushforward
2.Lockedposition5.Unlockedposition
3.Bladecontrolbail
6.Squeezeagainsthandle
3.Squeezethebladecontrolbailagainstthehandle
andreleasethebladecontrollocklever;theblade
shouldengage.
4.Releasethebladecontrolbailtodisengagethe
blade.Thebladecontrollockleverwillresetto
lockthebladecontrolbail.
UsingtheMulchPlug
Occasionallyyoumaywishtousethemulchplugto
mulchthegrassandleafclippingsbackintothelawn.
•InstallingtheMulchPlug:
1.Stoptheengineandwaitforallmovingparts
tostop.
2.Removethegrassbagifitisonthemower.
3.Raisethedischargedoorandinsertthemulch
plugintothedischargeopening.Thelipon
theplugwillsnapintothemowerhousing.
17
Operation
Figure14
1.Mulchplug3.Lip
2.Dischargedoor4.Mowerhousing
4.Lowerthedischargedoor.
•RemovingtheMulchPlug:
Note:Whengrassisthickandlush,clippings
maycollectonandaroundthedischargetunnel
plug.Thismaymakeitdifculttoremovethe
plug.Cleantheplugthoroughlyaftereachuse.
1.Toremovethemulchplug,raisethedischarge
doorandpullthemulchplugoutofthe
dischargetunnel.
2.Lowerthedischargedoor.
CheckingtheBladeBrakeClutch
(BladeBrakeClutchUnitsOnly)
ChecktheBladeBrakeClutch(BBC)systembefore
eachusetoensurethatitisoperatingproperly.
NormalTest:
1.Stoptheengineandwaitforallmovingpartsto
stop.
2.Movethelawnmowerontoapavedsurfacein
anon-windyarea.
3.Setallfourwheelstothe21/2inches(6.4cm)
cuttingheight(seeFigure16andFigure17)
4.Takeahalfsheetofnewspaperandcrumple
itintoballsmallenoughtogounderthedeck
(about3inchesor7.6cmindiameter)asshown
inFigure15.
Figure15
1.Crumplednewspaper2.5inches(12.7cm)
5.Placetheballofnewspaper5inches(12.7cm)in
frontofthelawnmower.
6.Starttheengine.
7.Pushthebladecontrollockleverforwardto
releasethebladecontrolbail(Figure4).
8.Squeezethebladecontrolbailagainstthehandle.
bladeshouldengage.
9.Releasethebladecontrolbail.Youshouldheara
“bang.”Thebladeshouldstopinthreeseconds.
Thebladecontrollocklevershouldresettolock
thebladecontrolbail.
10.Immediatelypushthelawnmoweroverthe
newspaperball.
11.Stoptheengineandwaitforallmovingpartsto
stop.
12.Walkaroundthelawnmowertocheckforthe
newspaperball.Iftheballdidnotgounderthe
deck,repeatsteps6through11.
13.Pullthelawnmowerawayfromthenewspaper.
Ifthenewspaperballunravelsorisshredded,
thebladehasnotproperlystopped,resulting
inanunsafeoperatingcondition.Contactan
AuthorizedServiceDealer.
18
Operation
DANGER
Ifthebladebrakeclutchsystemis
inoperative,thebladewillcontinuetorotate
whenyoureleasethebladecontrolbail.
Contactwiththebladecouldoccur,causing
seriousinjury.
•ChecktheBBCoperationbeforeeach
use.
•NeverusetheBBC-equippedlawnmower
withaninoperativesafetysystem.
•TakeyourlawnmowertoanAuthorized
ServiceDealerforrepairifthesafety
systemfailstooperateproperly.
TestUsingtheGrassBag
1.Installtheemptygrassbagonthedischarge
tunnel.
2.Starttheengine.
3.ForunitswithaBladeBrakeClutch:Pushthe
bladecontrollockleverforwardtoreleasethe
bladecontrolbail(Figure4).
4.Squeezethebladecontrolbailagainstthehandle.
5.Thebagshouldbegintoinate,indicatingthat
thebladeisengagedandrotating.
6.Releasethebladecontrolbail.Ifthebagdoesnot
immediatelydeate,itindicatesthatthebladeis
stillrotating.Thebladebrakeclutchmechanism
maybedeteriorating,and,ifignoredcouldresult
inanunsafeoperatingcondition.Havethelawn
mowerinspectedandservicedbyanAuthorized
ServiceDealer.
AdjustingtheCuttingHeight
Therearwheelsareadjustedtogetherwithaheight
adjustmentrodlocatedonthemowerhousingby
theleftrearwheel.Thefrontwheelsareadjusted
separatelybyremovingthefrontwheelshaft
assemblies,adjustingtheheight,andthenreplacing
theshaftassemblies.Thecuttingheightcanbe
adjustedfrom1inch(25mm)to41/2inches(114
mm)in1/2inch(12.7mm)increments.
WARNING
Adjustingthecuttingheightleverscould
bringyourhandsintocontactwithamoving
blade.Amovingbladecancauseserious
injury.
•Stoptheengineandwaitforallmovement
tostopbeforeadjustingthecutting
height.
•DoNotputyourngersunderthe
housingwhenadjustingthecutting
height.
•RearWheelAdjustment:
1.Pullthewheelheightadjustmentrodupward
toreleasethepinfromthenotchinthe
adjustmentbracket(Figure16).
Figure16
1.Pullupward4.Pin
2.Wheelheightadjustment
rod
5.Rotatetodesiredsetting
3.Adjustmentbracket6.Indicator
2.Applydownwardpressureorliftthehousing
torotatetheheightadjustmentbracket.Use
theindicatortodeterminethedesiredsetting.
3.Releasethewheelheightadjustmentrodtoset
thepinsecurelyinthedesirednotch.
•FrontWheelAdjustment
1.Pullupontheheightadjusterandpullthe
frontwheelshaftassemblyoutwardasshown
inFigure17.
19
Operation
Figure17
1.Frontwheelshaft
assembly
4.Frontquadrantblockcut
heights
2.Pullup5.Pulloutward
3.Heightadjuster
6.Shaftgroove
2.Insertthefrontwheelshaftassemblyintothe
desiredcutheightsettinginthefrontquadrant
block.Lowertheheightadjusterintothe
grooveonthefrontwheelshaft.Pulland
pushthewheelshaftassemblytomakesureit
haslockedintoplace.
UsingtheGrassBag
•InstallingtheGrassBag
1.Stoptheengineandwaitforallmovingparts
tostop.
2.Openthereardoor.
3.Graspthehandleonthebagandsettherear
ofthebagframeontothehandlebracket
notch(Figure18).
Figure18
1.Bag4.Handlebracketnotch
2.Handle5.Reardoor
3.Bagframe
6.Lower
4.Oncethebagisseated,lowerthereardoor
ontothebag.
•MowingwiththeGrassBag
WARNING
Aworngrassbagcouldallowsmallstones
andothersimilardebristobethrowninthe
operator’sorbystander’sdirection.Thrown
objectscanresultinseriouspersonalinjury
ordeathtotheoperatororbystanders.
Checkthegrassbagfrequently.Ifitis
damaged,installanewExmarkreplacement
bag.
Cutthegrassuntilthebagisfull.
Note:DoNotoverllthebag.
•RemovingtheGrassBag
1.Stoptheengineandwaitforallmovingparts
tostop.
2.Raisethereardischargedoorandgraspthe
handleonthebag.
3.Liftthebagoffofthelawnmowerandlower
thereardischargedoor.
4.Graduallytipthebagforwardtoemptythe
clippings.
5.Toinstallthebag,refertothesectionon
InstallingtheGrassBag.
DANGER
Ifthedischargedoordoesnotclose
completely,thelawnmowercouldthrow
objects.Thrownobjectscanresultinserious
personalinjuryordeathtotheoperatoror
bystanders.
•Neveropenthedoortothedischarge
openingwhentheengineisrunning.
•Ifyoucannotclosethedoorbecausethe
grassclippingsclogthedischargearea,
stoptheengineandgentlymovethe
dischargedoorhandlebackandforth
untilyoucanclosethedoorcompletely.If
youstillcannotclosethedoor,removethe
obstructionwithastick,notyourhand.
20
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