Toro 04383 - Hydraulic System Maintenance; Changing the Hydraulic Oil and Filter

compoundoffofthecuttingunits.Adjustcuttingunit
reeltobedknifeasneeded.Movethecuttingunitreel
speedcontroltothedesiredmowingposition.
Important:Ifthebacklapleverisnotreturned
tothe“F”positionafterbacklapping,thecutting
unitswillnotraiseorfunctionproperly.
HydraulicSystem
Maintenance
ChangingtheHydraulicOil
andFilter
ServiceInterval:Aftertherst50hours
Every800hours
Iftheoilbecomescontaminated,contactyourlocalToro
distributorbecausethesystemmustbeushed.Contaminated
oillooksmilkyorblackwhencomparedtocleanoil.
1.Cleantheareaaroundtheltermountingarea
(Figure57).Placeadrainpanunderthelterand
removethelter.
Note:Iftheoilisnotgoingtobedrained,disconnect
andplugthehydrauliclinegoingtothelter.
Figure57
1.Hydraulicoillter
2.Fillthereplacementlterwiththeappropriatehydraulic
uid,lubricatethesealinggasket,andhandturnituntil
thegasketcontactsthelterhead.Thentighten3/4
turnfurther.Theltershouldnowbesealed.
3.Fillthehydraulicreservoirwithapproximately5.5
gallonsofhydraulicoil;refertoServicingHydraulic
SystemFluid.
4.Startthemachineandrunitatidlefor3to5minutes
tocirculatetheuidandremoveanyairtrappedin
thesystem.
5.Stopthemachine,rechecktheuidlevelandreplenish
asrequired.
6.Disposeoftheoilandlterproperly.
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