Maintenance
DriveSystemMaintenance
CheckingtheTirePressure
ServiceInterval:Every25hours/Monthly
(whichevercomesrst)
Maintaintheairpressureinthefrontandreartiresas
specied.Uneventirepressurecancauseunevencut.
Checkthepressureatthevalvestem(Figure31).
Checkthetireswhentheyarecoldtogetthemost
accuratepressurereading.
RearTires:13psi(90kPa)
FrontTires(casterwheels):
•Smooth:13psi(90kPa)
•Sawtooth:20psi(138kPa)
Figure31
1.Valvestem
MowerMaintenance
ServicingtheCuttingBlades
ServiceInterval:Beforeeachuseordaily
Maintainsharpbladesthroughoutthecuttingseason
becausesharpbladescutcleanlywithouttearingor
shreddingthegrassblades.Tearingandshredding
turnsgrassbrownattheedges,whichslowsgrowth
andincreasesthechanceofdisease.
Checkthecutterbladesdailyforsharpness,andfor
anywearordamage.Filedownanynicksandsharpen
thebladesasnecessary.Ifabladeisdamagedor
worn,replaceitimmediatelywithagenuineExmark
replacementblade.Forconvenientsharpeningand
replacement,youmaywanttokeepextrabladeson
hand.
WARNING
Awornordamagedbladecanbreak,anda
pieceofthebladecouldbethrownintothe
operator’sorbystander’sarea,resultingin
seriouspersonalinjuryordeath.
•Inspectthebladeperiodicallyforwearor
damage.
•Replaceawornordamagedblade.
BeforeInspectingorServicingthe
Blades
Parkthemachineonalevelsurface,disengagethe
bladecontrolswitch,andmovethemotioncontrol
leversoutwardtotheneutralpositionandengage
parkingbrake.Stoptheengine,removethekey,and
disconnectthesparkplugwire(s)fromthespark
plug(s).
InspectingtheBlades
1.Inspectthecuttingedges(Figure32).Iftheedges
arenotsharporhavenicks,removeandsharpen
theblades;refertoSharpeningtheBlades.
2.Inspecttheblades,especiallythecurvedarea.If
younoticeanydamage,wear,oraslotformingin
thisarea(item3inFigure32),immediatelyinstall
anewblade.
Figure32
1.Cuttingedge3.Wear/slotforming
2.Curvedarea
CheckingforBentBlades
1.Rotatethebladesuntiltheendsfaceforwardand
backward(Figure33andFigure34).Measure
fromalevelsurfacetothecuttingedge,ofthe
blades.Notethisdimension.
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