Toro 74549 - Mower Deck Maintenance; Servicing Cutting Blades

MowerDeck
Maintenance
ServicingtheCuttingBlades
Toensureasuperiorqualityofcut,keepthebladessharp.
Forconvenientsharpeningandreplacement,youmaywant
tokeepextrabladesonhand.
WARNING
Awornordamagedbladecanbreak,andapiece
ofthebladecouldbethrownintotheoperator's
orbystander'sarea,resultinginseriouspersonal
injuryordeath.
•Inspectthebladesperiodicallyforwearor
damage.
•Replaceawornordamagedblade.
BeforeInspectingorServicingthe
Blades
Parkthemachineonalevelsurface,disengagethebladesand
settheparkingbrake.Turntheignitionkeytooff.Remove
thekeyanddisconnectthesparkplugwiresfromthespark
plugs.
InspectingtheBlades
ServiceInterval:Beforeeachuseordaily
1.Inspectthecuttingedges(Figure80).Iftheedges
arenotsharporhavenicks,removeandsharpenthe
blades.RefertoSharpeningtheBlades.
2.Inspecttheblades,especiallythecurvedarea.Ifyou
noticeanycracks,wear,oraslotforminginthisarea
immediatelyinstallanewblades(
Figure80).
Figure80
1.CuttingEdge3.Wear/slotForming
2.CurvedArea4.Crack
CheckingforBentBlades
1.DisengagethePTO,movethemotioncontrolleversto
theneutrallockedpositionandsettheparkingbrake.
2.Stoptheengine,removethekey,andwaitforallmoving
partstostopbeforeleavingtheoperatingposition.
3.Rotatethebladesuntiltheendsfaceforwardand
backward.Measurefromalevelsurfacetothecutting
edge,positionA,oftheblades(Figure81).Notethis
dimension.
Figure81
1.Measureherefromblade
tohardsurface
2.PositionA
4.Rotatetheoppositeendsofthebladesforward.
5.Measurefromalevelsurfacetothecuttingedgeof
thebladesatthesamepositionasinstep3above.
Thedifferencebetweenthedimensionsobtainedin
steps3and4mustnotexceed1/8inch(3mm).Ifthis
dimensionexceeds1/8inch(3mm),thebladeisbent
andmustbereplaced;refertoRemovingtheBlades
andInstallingtheBlades.
WARNING
Abladethatisbentordamagedcouldbreak
apartandcouldseriouslyinjureorkillyouor
bystanders.
•Alwaysreplacebentordamagedblade
withanewblade.
•Neverleorcreatesharpnotchesinthe
edgesorsurfacesofblade.
RemovingtheBlades
Bladesmustbereplacedifasolidobjectishit,ifthebladeis
outofbalanceorisbent.Toensureoptimumperformance
andcontinuedsafetyconformanceofthemachine,use
genuineTororeplacementblades.Replacementbladesmade
byothermanufacturersmayresultinnon-conformancewith
safetystandards.
1.Holdthebladeendusingaragorthickly-paddedglove.
2.Removethebladebolt,curvedwasher,andbladefrom
thespindleshaft(
Figure82).
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