ReplacingtheHydraulicFiltersand
HydraulicOil
ServiceInterval:Aftertherst250hours—Changethe
hydraulicltersandhydraulicoilwhen
usinganytypeofoil.
Every250hours—Changethehydraulicltersand
hydraulicoilwhenusingMobil
®
1oil(moreoftenin
dirtyordustyconditions).
Every500hours—Changethehydraulicltersand
hydraulicoilwhenusingToro
®
HYPR-OIL
™
500
hydraulicoil(moreoftenindirtyordustyconditions).
Toreplacethehydraulicoil,theltersneedtoberemoved.
Replacebothatthesametime.Refertotheoilspecications
under
ServicingtheHydraulicSystem(page52)forthe
correctoil.
1.Disengagethebladecontrolswitch(PTO),movethe
motioncontrolleverstotheneutrallockedposition
andsettheparkingbrake.
2.Stoptheengine,removethekey,andwaitforallmoving
partstostopbeforeleavingtheoperatingposition.
3.Raisethemachineandsupportitwithjackstands
(Figure82).
Figure82
1.Jackstands
4.Removeboththemowerbeltandthepumpdrive
belt;refertoReplacingtheMowerBelt(page48)and
ReplacingtheHydraulicPumpDriveBelt(page49).
Note:Thisstepwillpreventoilfromgettingonthe
belts.
5.Placeadrainpanunderthelter,removetheoldlter
andwipethesurfaceclean(
Figure83).
Figure83
BottomViewofMachine
1.Filterlocations
2.Hydrauliclter
6.Applyathincoatofhydraulicoiltotherubbergasket
onthereplacementlter(Figure83).
7.Installthereplacementhydrauliclter.
8.Installthepumpdrivebeltandthemowerbelt.
9.Removethejackstandsandlowerthemachine
(Figure82).
10.Addoiltothehydraulicreservoirandcheckforany
leaks.
11.Cleanupanyspilledoil.
12.Starttheengineandletitrunforabout2minutesto
purgeairfromthesystem.
13.Stoptheengineandcheckforleaks.
14.Checktheoillevelwhiletheoiliscold.
15.Ifrequired,addoiltothehydraulicreservoir.
Note:Donotoverll.
53