HydraulicSystem
Maintenance
HydraulicSystemOilSpecication
OilType:ToroHYPR-OIL®500or20w-50motoroil.
SystemCapacity:approximately4.495liter(152oz)witha
lterchange.
CheckingtheHydraulic-Oil
Level
ServiceInterval:Every25hours
Checkexpansionreservoirandifnecessaryaddthespecied
oiltotheFullColdline.
Figure44
1.Expansionreservoir3.Engine
2.FullColdline
ChangingtheHydraulic
SystemOilandFilters
ServiceInterval:Aftertherst50hours
Every400hours
Important:Thebleedingprocessisrepeateduntilthe
oilremainsattheFullColdlineinthereservoirafter
purging.
F ailur e to pr oper l y perf or m this pr ocedur e
can r esult in ir r epara ble dama ge to the transaxle dri v e
system.
Note:Thelterandoilarechangedatthesametime.Do
notreuseoil.Oncethenewlterisinstalledandoilisadded
anyairinthesystemmustbepurged.
RemovingHydraulicSystemFilters
1.Stopengine,waitforallmovingpartstostop,and
allowenginetocool.Removethekeyandengagethe
parkingbrake.
2.Raisetherearofmachineupandsupportwithjack
stands(orequivalentsupport)justhighenoughto
allowdrivewheelstoturnfreely.
Figure45
1.Jackingpoints
3.Locatethelterandlterguardsoneachtransaxle
drivesystem(Figure46).Removethreescrewssecuring
thelterguardandguard.
Figure46
Rightsideshown
1.Transaxledrive
4.Screws
2.Oillter
5.Ventplug
3.Filterguard
4.Carefullycleanareaaroundlters.Itisimportantthat
nodirtorcontaminationenterhydraulicsystem.
37