Toro 74143 - Servicing the Cutting Blades

ServicingtheCuttingBlades
Toensureasuperiorqualityofcut,keepthebladessharp.
Forconvenientsharpeningandreplacement,youmaywant
tokeepextrabladesonhand.
WARNING
Awornordamagedbladecanbreak,andapiece
ofthebladecouldbethrownintotheoperator's
orbystanders’area,resultinginseriouspersonal
injuryordeath.
•Inspectthebladesperiodicallyforwearor
damage.
•Replaceawornordamagedblade.
BeforeInspectingorServicingthe
Blades
Parkthemachineonalevelsurface,disengagethebladesand
settheparkingbrake.Turntheignitionkeytooff.Remove
thekey,anddisconnectthesparkplugwiresfromthespark
plugs.
InspectingtheBlades
ServiceInterval:Beforeeachuseordaily
1.Inspectthecuttingedges(Figure77).
2.Iftheedgesarenotsharporhavenicks,removeand
sharpentheblade;refertoSharpeningtheBlades(page
53).
3.Inspecttheblades,especiallyinthecurvedarea.
4.Ifyounoticeanycracks,wear,oraslotforminginthis
area,immediatelyinstallanewblade(Figure77).
Figure77
1.Cuttingedge3.Wear/slotforming
2.Curvedarea4.Crack
CheckingforBentBlades
1.DisengagethePTO,movethemotion-controlleversto
theneutral-lockedposition,andsettheparkingbrake.
2.Stoptheengine,removethekey,andwaitforallmoving
partstostopbeforeleavingtheoperatingposition.
3.Rotatethebladesuntiltheendsfaceforwardand
backward.
4.Measurefromalevelsurfacetothecuttingedge,
positionA,oftheblades(Figure78).
Figure78
1.Measureherefromblade
tohardsurface
2.PositionA
5.Rotatetheoppositeendsofthebladesforward.
6.Measurefromalevelsurfacetothecuttingedgeofthe
bladesatthesamepositionasinstep4above.
Note:Thedifferencebetweenthedimensions
obtainedinsteps4and5mustnotexceed3mm
(1/8inch).
Note:Ifthisdimensionexceeds3mm(1/8inch),the
bladeisbentandmustbereplaced.
WARNING
Abladethatisbentordamagedcouldbreak
apartandcouldseriouslyinjureorkillyouor
bystanders.
•Alwaysreplacebentordamagedblade
withanewblade.
•Donotleorcreatesharpnotchesinthe
edgesorsurfacesoftheblade.
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