Toro 74904 - Engine Maintenance; Engine Safety; Servicing the Air Cleaner

EngineMaintenance
EngineSafety
•Shutofftheenginebeforecheckingtheoilor
addingoiltothecrankcase.
•Keepyourhands,feet,face,clothing,andother
bodypartsawaythemuferandotherhotsurfaces.
ServicingtheAirCleaner
ServiceInterval:Every150hours—Inspectthe
primarylter.
Every300hours/Yearly(whichevercomes
rst)—Replacetheprimaryairlter(moreoften
industyorsandyconditions).
Every300hours—Checktheinnerairlter.
Every600hours—Replacetheinnerairlter.
Note:Checktheltersmorefrequentlyifthe
operatingconditionsareextremelydustyorsandy.
RemovingtheFilters
1.Parkthemachineonalevelsurface,disengage
theblade-controlswitch(PTO),andengagethe
parkingbrake.
2.Shutofftheengine,removethekey,andwait
forallmovingpartstostopbeforeleavingthe
operatingposition.
3.Releasethelatchesontheaircleanerand
pulltheair-inletcoverofftheair-cleanerbody
(Figure54).
4.Cleantheair-inletscreenandcover.
5.Installtheair-inletcoverandsecureitwiththe
latches(Figure54).
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Figure54
1.Air-inletcover3.Air-cleanerbody
2.Air-inletscreen4.Latch
6.Releasethelatchesontheaircleanerandpull
theair-cleanercoverofftheair-cleanerbody
(Figure55).
7.Cleantheinsideoftheair-cleanercoverwith
compressedair.
8.Gentlyslidetheprimarylteroutofthe
air-cleanerbody(Figure55).
Note:Avoidknockingthelterintothesideof
thebody.
9.Removetheinnerlteronlyifyouintendto
replaceit.
Important:Neverattempttocleantheinner
lter.Ifthesafetylterisdirty,thenthe
primarylterisdamaged.Replaceboth
lters.
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Figure55
1.Innerlter
4.Latch
2.Primarylter
5.Air-cleanerbody
3.Air-cleanercover
10.Inspecttheprimarylterfordamagebylooking
intothelter,whileshiningabrightlightonthe
outsideofthelter.
Note:Holesinthelterwillappearasbright
spots.Ifthelterisdamaged,discardit.
InspectingtheFilters
1.Inspecttheinnerlter.Ifitisdirty,replaceboth
theinnerandprimarylters.
Important:Donotattempttocleanthe
innerlter.Iftheinnerlterisdirty,thenthe
primarylterisdamaged.
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