Toro 74990 - Engine Maintenance; Servicing the Air Cleaner

14.Torquethenutto8to9N-m(75to80in-lb),
loosenit,thentorqueitto2to3N-m(20to25
in-lb).Makesurethattheaxledoesnotextend
beyondeithernut.
15.Installthesealguardsoverthewheelhuband
insertthewheelintothecasterfork.Installthe
casterboltandtightenthenutfully.
16.Removethejackstands.
Important:Topreventsealandbearingdamage,
checkthebearingadjustmentoften.Spinthe
casterwheel.Thewheelshouldnotspinfreely
(morethan1or2revolutions)orhaveanyside
play.Ifthewheelspinsfreely,adjustthetorqueon
spacernutuntilthereisaslightamountofdrag.
Applythread-lockingadhesive.
EngineMaintenance
WARNING
Contactwithhotsurfacesmaycausepersonal
injury.
Keephands,feet,face,clothingandother
bodypartsawaythemuferandotherhot
surfaces.
ServicingtheAirCleaner
ServiceInterval:Every250hours—Replacethe
primaryairlter.
Every250hours—Checkthesecondaryair
lter.
Every500hours—Replacethesecondaryair
lter.
Note:Servicetheaircleanermorefrequentlyif
operatingconditionsareextremelydustyorsandy.
RemovingtheFilters
1.DisengagethePTO,movethemotion-control
leverstotheneutral-lockedpositionandsetthe
parkingbrake.
2.Stoptheengine,removethekey,andwait
forallmovingpartstostopbeforeleavingthe
operatingposition.
3.Pushdowntoreleasetheretainingclampson
theaircleanerandpulltheaircleanercoveroff
oftheair-cleanerbody(Figure49).
4.Cleantheinsideoftheaircleanercoverwith
compressedair.
5.Gentlyslidetheprimarylteroutoftheair
cleanerbody(Figure49).Avoidknockingthe
lterintothesideofthebody.
6.Removethesecondarylteronlyifyouintend
toreplaceit.
Important:Neverattempttocleanthe
secondarylter.Ifthesecondarylteris
dirty,thentheprimarylterisdamagedand
youshouldreplacebothlters.
7.Inspecttheprimarylterfordamagebylooking
intothelterwhileshiningabrightlightonthe
outsideofthelter.Holesinthelterwillappear
asbrightspots.Ifthelterisdamageddiscardit.
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