Maintenance
CAUTION
Raisingthemowerdeckforserviceor
maintenancerelyingsolelyonmechanical
orhydraulicjackscouldbedangerous.The
mechanicalorhydraulicjacksmaynotbe
enoughsupportormaymalfunctionallowing
theunittofall,whichcouldcauseinjury.
DoNotrelysolelyonmechanicalorhydraulic
jacksforsupport.Useadequatejackstands
orequivalentsupport.
3.Removethepumpdrivebelt.
4.Placeacatchpanunderthehydro.
5.Carefullycleanareaaroundthelters.Itis
importantthatnodirtorcontaminationenterthe
hydraulicsystem.
6.Usingasocket,unscrewlterstoremoveand
allowoiltodrain.
7.Beforeinstallingthenewlters,applyathincoat
ofExmarkPremiumHydrooilonthesurfaceof
thetworubberseals.
8.Installthenewltersandtorqueto14ft-lb(19
N-m).
9.FillthehydraulicsystemasstatedinCheck
HydraulicOilLevelsection.
ExmarkPremiumHydroOilisrecommended.
Refertothechartforanacceptablealternative:
HydroOilChangeInterval
ExmarkPremiumHydro
Oil(Preferred)
500Hours
Mobil115W50250Hours
10.Removethecatchpanandproperlydisposeof
hydrooilandlteraccordingtolocalcodes.
11.Re-installthepumpdrivebelt.
12.Startengineandmovethrottlecontrolaheadto
fullthrottleposition.Movethespeedcontrol
leverstothefullspeedandrunforoneminute.
Shutdownthemachine,allowthehydrostocool
andrecheckoillevel.
13.Removethejackstands.
Note:DoNotchangethehydraulicsystemoil
(exceptforwhatcanbedrainedwhenchanginglter),
unlessitisfelttheoilhasbeencontaminatedorbeen
extremelyhot.
Changingoilunnecessarilycoulddamagehydraulic
systembyintroducingcontaminantsintothesystem.

WheelHub-SlottedNut

TorqueSpecication

ServiceInterval:Aftertherst100hours
Every500hoursthereafter
SeeFigure25todeterminewhichslottednuthas
beeninstalledontheunit.
Figure25
1.StyleA(blacknish)3.StyleB(yellowzinc)
2..03inch(.76mm)4..24inch(6mm)
•StyleA(blacknish):
Torquetheslottednutto211-260ft-lb(286-352
N-m).
Note:DoNotuseanti-seizeonwheelhub.
•StyleB(yellowzinc):
1.Removeanddiscardthecotterpin.
2.Torquetheslottednutto200ft-lb(271N-m).
3.Checkdistancefrombottomofslotinnutto
insideedgeofhole.Twothreads(0.1inch)or
lessshouldbeshowing.
Figure26
1.0.1inchmax2.Nomorethantwo
threads(0.1inchmax)
shouldbeshowinghere.
36