Toro GrandStand 74574 - Checking the Tire Pressure; Adjusting the Caster-Pivot Bearing; Servicing the Caster Wheels and Bearings

CheckingtheTirePressure
ServiceInterval:Every50hours/Monthly(whichever
comesrst)
Maintaintheairpressureinthereartiresat83to97kPa(12
to14psi).
Important:Uneventirepressurecancauseanuneven
cut.
Note:Thefronttiresaresemi-pneumatictiresanddonot
requireair-pressuremaintenance.
Figure59
AdjustingtheCaster-Pivot
Bearing
ServiceInterval:Every500hours/Yearly(whichevercomes
rst)
1.Disengagetheblade-controlswitch(PTO),movethe
motioncontrolleverstotheneutral-lockedposition,
andsettheparkingbrake.
2.Stoptheengine,removethekey,andwaitforallmoving
partstostopbeforeleavingtheoperatingposition.
3.Removethedustcapfromthecasterandtightenthe
locknut(Figure60).
4.Tightenthelocknutuntilthespringwashersareat,
andthenbackoffa1/4turntoproperlysetthepreload
onthebearings(Figure60).
Important:Makesurespringwashersare
installedcorrectlyasshowninFigure60.
5.Installthedustcap(Figure60).
Figure60
1.Springwashers
3.Dustcap
2.Locknut
ServicingtheCasterWheels
andBearings
Thecasterwheelsrotateonarollerbearingsupportedbya
spannerbushing.Ifthebearingiskeptwelllubricated,wear
willbeminimal.Failuretokeepthebearingwelllubricated
willcauserapidwear.Awobblycasterwheelusuallyindicates
awornbearing.
1.Removethelocknutandwheelboltholdingthecaster
wheeltothecasterfork(Figure61).
Figure61
1.Locknut
4.Spannerbushing
2.Wheelbolt5.Rollerbearing
3.Bushing
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