Toro 30447N - Blade Maintenance; Checking for a Bent Blade; Removing and Installing the Cutter Blade(S); Inspecting and Sharpening the Cutter Blade(S)

BladeMaintenance
CheckingforaBentBlade
1.Positionthemachineonalevelsurface.Raisethe
cuttingunit,engagetheparkingbrake,putthetraction
pedalinneutral,putthePTOleverintheOffposition,
stoptheengine,andremovetheignitionkey.Blockthe
cuttingunittopreventitfromaccidentallyfalling.
2.Rotatethebladeuntiltheendsfaceforwardand
backward(Figure85).Measurefromtheinsideofthe
cuttingunittothecuttingedgeatthefrontoftheblade.
Rememberthisdimension.
Figure85
3.Rotatetheoppositeendofthebladeforward.Measure
betweenthecuttingunitandcuttingedgeoftheblade
atthesamepositionasinstep2.Thedifference
betweenthedimensionsobtainedinsteps2and3
mustnotexceed1/8inch(3mm).Ifthedimension
exceeds1/8inch(3mm),thebladeisbentandmustbe
replaced;refertoRemovingandInstallingtheCutter
Blade.
RemovingandInstallingthe
CutterBlade(s)
Theblademustbereplacedifasolidobjectishit,theblade
isoutofbalance,orifthebladeisbent.Alwaysusegenuine
Tororeplacementbladestobesureofsafetyandoptimum
performance.Neverusereplacementbladesmadebyother
manufacturersbecausetheycouldbedangerous.
1.Raisethecuttingunittothehighestposition,engage
theparkingbrake,stoptheengine,andremovethe
ignitionkey.Blockthecuttingunittopreventitfrom
accidentallyfalling.
2.Grasptheendofthebladeusingaragorthickly
paddedglove.Removethebladebolt,anti-scalpcup,
andbladefromthespindleshaft(Figure86).
3.Installtheblade,anti-scalpcup,andbladebolt.Tighten
thebladeboltto85to110ft-lb(115to149N⋅m).
Important:Thecurvedpartoftheblademustbe
pointingtowardtheinsideofthecuttingunitto
ensurepropercutting.
Note:Afterstrikingaforeignobject,torqueallthe
spindlepulleynutsto130to150ft-lb(176to203
N⋅m).
Figure86
1.Bladebolt2.Anti-scalpcup
InspectingandSharpeningthe
CutterBlade(s)
DANGER
Awornordamagedbladecanbreak,andapiece
ofthebladecouldbethrownintotheoperator's
orbystander'sarea,resultinginseriouspersonal
injuryordeath.Tryingtorepairadamagedblade
mayresultindiscontinuedsafetycerticationof
theproduct.
•Inspectthebladeperiodicallyforwearor
damage.
•Nevertrytostraightenabladethatisbentor
weldabrokenorcrackedblade.
•Replaceawornordamagedblade.
Twoareasmustbeconsideredwhencheckingandservicing
thecutterblade-thesailandthecuttingedge.Bothcutting
edgesandthesail,whichistheturnedupportionopposite
thecuttingedge,contributetoagoodquality-of-cut.The
sailisimportantbecauseitliftsthegrassupstraight,thereby
producinganevencut.However,thesailwillgraduallywear
downduringoperation,andthisconditionisnormal.Asthe
sailwearsdown,thequality-of-cutwilldegradesomewhat,
althoughthecuttingedgesaresharp.Thecuttingedgeof
theblademustbesharpsothatthegrassiscutratherthan
torn.Adullcuttingedgeisevidentwhenthetipsofthegrass
appearbrownandshredded.Sharpenthecuttingedgesto
correctthiscondition.
1.Positionthemachineonalevelsurface.Raisethe
cuttingunit,engagetheparkingbrake,putthetraction
pedalinneutral,putthePTOleverintheOffposition,
stoptheengine,andremovetheignitionkey.
2.Examinethecuttingendsofthebladecarefully,
especiallywheretheatandcurvedpartsoftheblade
meet(
Figure87).Sincesandandabrasivematerialcan
wearawaythemetalthatconnectstheatandcurved
partsoftheblade,checkthebladebeforeusingthe
mower.Ifwearisnoticed(
Figure87),replacetheblade.
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