Maintenance
A.Installbushingthroughbladewithbushing
angeonbottom(grass)sideofblade.
Figure15
1.Installbushinginbladepriortoinstallingbushingin
spindle.
B.Installbushing/bladeassemblyintospindle.
Figure16
1.Usewrenchherefor
bladeinstallation.This
nuthasbeentorquedto
130-160ft-lb(176–217
N-m)
2.Torqueto50-60ft-lb
(68-81N-m)Apply
lubricanttothreads
asneededtoprevent
seizing.Copper-based
anti-seizepreferable.
Greaseacceptable
substitute.
C.Applylubricanttothreadsofbladeboltas
neededtopreventseizing.Copper-based
anti-seizepreferable.Greaseacceptable
substitute.Installbladeboltngertight.Place
wrenchonthetopspindlenutthentorquethe
bladeboltsto50-60ft-lb(68-81N-m).
WARNING
Incorrectinstallationofthebladeor
componentsusedtoretainthebladecan
bedangerous.Failuretousealloriginal
componentsandassembledasshowncould
allowabladeorbladecomponenttobe
thrownoutfromunderthedeckresultingin
seriouspersonalinjuryordeath.
AlwaysinstalltheoriginalExmarkblades,
bladebushings,andbladeboltsasshown.
CheckSafetyInterlock
System
ServiceInterval:Beforeeachuseordaily
CAUTION
Ifsafetyinterlockswitchesaredisconnected
ordamagedthemachinecouldoperate
unexpectedlycausingpersonalinjury.
•Donottamperwiththeinterlockswitches.
•Checktheoperationoftheinterlockswitches
dailyandreplaceanydamagedswitches
beforeoperatingthemachine.
UnderstandingtheSafetyInterlockSystem
Thesafetyinterlocksystemisdesignedtoprevent
themowerbladesfromrotating;unlessatleastone
oftheOPCleversisengagedandthebladecontrol
switch(PTO)ispulledon.
Thesafetyinterlocksystemisdesignedtostopthe
mowerbladesifyoureleasebothOPClevers.
Note:Parkbrakemustbedisengagedbeforethe
speedcontrolleverismovedoutofneutralorengine
willkill.
CheckingtheSafetyInterlockSystem
1.Starttheengine.
2.Engagetheparkingbrake.
3.MoveeitherOPClevertotheoperatingposition
andpushthespeedcontrolleverforward.
Theengineshouldinitiateshutdownafter
momentarypause.
4.Starttheengineandreleasetheparkingbrake.
5.MoveeitherOPClevertotheoperatingposition.
6.ContinueholdingtheeitherOPCleverinthe
operatingpositionandpullupontheblade
31