Toro 31598 - Blade Maintenance; Blade Inspection and Replacement

BladeMaintenance
CheckingforaBentBlade
Afterstrikingaforeignobject,inspectthemachinefor
damageandmakerepairsbeforerestartingandoperating
theequipment.Torqueallthespindlepulleynutsto130
to150ft-lb(176to203N⋅m).
1.Positionthemachineonalevelsurface.Raisethe
cuttingunit,engagetheparkingbrake,putthe
tractionpedalinneutral,makesurethePTOswitch
isintheOffposition,stoptheengine,andremove
theignitionkey.Blockthecuttingunittopreventit
fromaccidentallyfalling.
2.Rotatethebladeuntiltheendsfaceforwardand
backward(Figure99).Measurefromtheinsideof
thecuttingunittothecuttingedgeatthefrontof
theblade.Recordthisdimension.
Figure99
3.Rotatetheoppositeendofthebladeforward.
Measurebetweenthecuttingunitandcuttingedge
ofthebladeatthesamepositionasinstep2.The
differencebetweenthedimensionsobtainedinsteps
2and3mustnotexceed1/8inch(3mm).Ifthe
dimensionexceeds1/8inch(3mm),thebladeis
bentandmustbereplaced;refertoRemovingand
InstallingtheCutterBlade.
RemovingandInstallingthe
CutterBlade(s)
Theblademustbereplacedifasolidobjectishit,the
bladeisoutofbalance,orifthebladeisbent.Always
usegenuineTororeplacementbladestobesureofsafety
andoptimumperformance.Neverusereplacement
bladesmadebyothermanufacturersbecausetheycould
bedangerous.
1.Raisethecuttingunittothehighestposition,engage
theparkingbrake,stoptheengine,andremovethe
ignitionkey.Blockthecuttingunittopreventitfrom
accidentallyfalling.
2.Grasptheendofthebladeusingaragorthickly
paddedglove.Removethebladebolt,anti-scalpcup,
andbladefromthespindleshaft(
Figure100).
3.Installtheblade,anti-scalpcup,andbladebolt.
Tightenthebladeboltto85to110ft-lb(115to149
N⋅m).
Important:Thecurvedpartoftheblademust
bepointingtowardtheinsideofthecuttingunit
toensurepropercutting.
Note:Afterstrikingaforeignobject,torqueallthe
spindlepulleynutsto130to150ft-lb(176to203
N⋅m)andthebladeboltsto85to110ft-lb(115to
149N⋅m).
Figure100
1.Bladebolt2.Anti-scalpcup
InspectingandSharpeningthe
CutterBlade(s)
ServiceInterval:Aftertherst10hours—Checkblade
bolttorque
Every50hours—Checkbladebolt
torque
Beforeeachuseordaily—Check
mowerbladecondition
DANGER
Awornordamagedbladecanbreak,andapiece
ofthebladecouldbethrownintotheoperator’s
orbystander’sarea,resultinginseriouspersonal
injuryordeath.Tryingtorepairadamagedblade
mayresultindiscontinuedsafetycerticationof
theproduct.
•Inspectthebladeperiodicallyforwearor
damage.
•Nevertrytostraightenabladethatisbentor
weldabrokenorcrackedblade.
•Replaceawornordamagedblade.
Twoareasmustbeconsideredwhencheckingand
servicingthecutterblade-thesailandthecuttingedge.
Bothcuttingedgesandthesail,whichistheturned
upportionoppositethecuttingedge,contributetoa
goodquality-of-cut.Thesailisimportantbecauseit
liftsthegrassupstraight,therebyproducinganeven
cut.However,thesailwillgraduallyweardownduring
operation,andthisconditionisnormal.Asthesail
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