Exmark Quest Lawn Mower - Checking the Hydraulic Oil Level; Change the Hydraulic System Filter

Maintenance
CheckingtheHydraulicOil
Level
ServiceInterval:Beforeeachuseordaily
CheckexpansiontankandifnecessaryaddMOBIL1
15W-50syntheticmotoroiltotheFULLCOLDline
Figure29
1.Engine2.Expansiontank
ChangetheHydraulic
SystemFilter
ServiceInterval:Aftertherst200hours
Note:UseonlyMOBIL115W-50Syntheticmotor
oil.
1.Stopengine,waitforallmovingpartstostop,and
allowenginetocool.Removekeyandengage
parkingbrake.
2.Locatethetwoltersunderthetransmissions.
Removelterguards.
3.Carefullycleanareaaroundlters.Itisimportant
thatnodirtorcontaminationenterhydraulic
system.
4.Unscrewlterstoremoveandallowoiltodrain
fromdrivesystem.
Important:Beforereinstallingnewlters,
applyathincoatofoilonthesurfaceofthe
ltersrubberseal.
Turntheltersclockwiseuntilrubberseal
contactsthelteradapterthentightenthelter
anadditional3/4to1fullturn.
5.Removetheventplugoneachtransmissionand
llthroughexpansionreservoir,whenoilcomes
outofventreinstallplug.Torqueplugsto180
in-lb(244N-m).Continuetoaddoiluntilit
reachestheFULLCOLDlineontheexpansion
reservoir.
Figure30
1.Oillter3.Leftreartire
2.Ventplug
6.Raisetherearofmachineupandsupportwith
jackstands(orequivalentsupport)justhigh
enoughtoallowdrivewheelstoturnfreely.
7.Startengineandmovethrottlecontrolaheadto
1/2throttleposition.Disengageparkingbrake.
A.Withthebypassvalveopenandtheengine
running,slowlymovethedirectionalcontrol
inbothforwardandreverse(5or6times).
B.Withthebypassvalveclosedandtheengine
running,slowlymovethedirectionalcontrol
inbothforwardandreversedirections(5to
6times).Checktheoillevel,andaddoilas
requiredafterstoppingtheengine.
C.ItmaybenecessarytorepeatstepsAand
Buntilalltheairiscompletelypurgedfrom
thesystem.Whenthetransaxleoperatesat
normalnoiselevelsandmovessmoothly
forwardandreverseatnormalspeeds,then
thetransaxleisconsideredpurged.
DoNotchangehydraulicsystemoil(exceptforwhat
canbedrainedwhenchanginglter),unlessitisfelt
theoilhasbeencontaminatedorbeenextremelyhot.
Changingoilunnecessarilycoulddamagehydraulic
systembyintroducingcontaminatesintothesystem.
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