Toro Groundsmaster 4000-D - Blade Maintenance; Checking for a Bent Blade; Inspecting and Sharpening Cutter Blades

BladeMaintenance
CheckingforaBentBlade
Afterstrikingaforeignobject,inspectthemachinefor
damageandmakerepairsbeforerestartingandoperating
theequipment.Torqueallthespindlepulleynutsto130
to150ft-lb(176to203N⋅m).
1.Positionthemachineonalevelsurface.Raisethe
cuttingunit,engagetheparkingbrake,putthe
tractionpedalinneutral,putthePTOleverin
theOffposition,stoptheengine,andremovethe
ignitionkey.Blockthecuttingunittopreventitfrom
accidentallyfalling.
2.Rotatethebladeuntiltheendsfaceforwardand
backward(Figure83).Measurefromtheinsideof
thecuttingunittothecuttingedgeatthefrontofthe
blade.Rememberthisdimension.
Figure83
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(Figure84).
3.Installtheblade,anti-scalpcup,andbladebolt.
Tightenthebladeboltto85to110ft-lb(115to149
N⋅m).
Important:Thecurvedpartoftheblademust
bepointingtowardtheinsideofthecuttingunit
toensurepropercutting.
Note:Afterstrikingaforeignobject,torqueallthe
spindlepulleynutsto130to150ft-lb(176to203
N⋅m).
Figure84
1.Bladebolt2.Anti-scalpcup
InspectingandSharpeningthe
CutterBlade(s)
Awornordamagedbladecanbreak,and
apieceofthebladecouldbethrowninto
theoperator’sorbystander’sarea,resulting
inseriouspersonalinjuryordeath.Trying
torepairadamagedblademayresultin
discontinuedsafetycerticationoftheproduct.
•Inspectthebladeperiodicallyforwearor
damage.
•Nevertrytostraightenabladethatisbent
orweldabrokenorcrackedblade.
•Replaceawornordamagedblade.
Twoareasmustbeconsideredwhencheckingand
servicingthecutterblade-thesailandthecuttingedge.
Bothcuttingedgesandthesail,whichistheturned
upportionoppositethecuttingedge,contributetoa
goodquality-of-cut.Thesailisimportantbecauseit
liftsthegrassupstraight,therebyproducinganeven
cut.However,thesailwillgraduallyweardownduring
operation,andthisconditionisnormal.Asthesail
wearsdown,thequality-of-cutwilldegradesomewhat,
althoughthecuttingedgesaresharp.Thecuttingedge
oftheblademustbesharpsothatthegrassiscutrather
thantorn.Adullcuttingedgeisevidentwhenthetips
ofthegrassappearbrownandshredded.Sharpenthe
cuttingedgestocorrectthiscondition.
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