Toro Groundsmaster 3320-D - Inspecting and Sharpening the Blade(S)

G010555
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2
Figure32
1.Bladebolt2.Anti-scalpcup
3.Installtheblade-sailfacingtowardthecutting
unit-withtheanti-scalpcupandbladebolt.Tighten
thebladeboltto85-110ft-lb(115-149N-m).
Important:Thecurvedpartoftheblademust
bepointingtowardtheinsideofthecuttingunit
toensurepropercutting.
InspectingandSharpeningthe
Blade(s)
ServiceInterval:Beforeeachuseordaily
Every50hours
DANGER
Awornordamagedbladecanbreak,andapiece
ofthebladecouldbethrownintotheoperator’s
orbystander’sarea,resultinginseriouspersonal
injuryordeath.
•Inspectthebladeperiodicallyforwearor
damage.
•Donottrytostraightenabladethatisbent.
•Neverweldabrokenorcrackedblade.
•Replaceawornordamagedbladewitha
newTorobladetoensurecontinuedsafety
certicationoftheproduct.
Twoareasmustbeconsideredwhencheckingand
servicingthecuttingblade:thesailandthecuttingedge.
Bothcuttingedgesandthesail,whichistheturnedup
portionoppositethecuttingedge,contributetoagood
quality-of-cut.Thesailisimportantbecauseitpullsgrass
upstraight,therebyproducinganevencut.However,
thesailwillgraduallyweardownduringoperation,and
thisconditionisnormal.Asthesailwearsdown,the
quality-of-cutwilldegradesomewhat,althoughthe
cuttingedgesaresharp.Thecuttingedgeoftheblade
mustbesharpsothatthegrassiscutratherthantorn.
Adullcuttingedgeisevidentwhenthetipsofthegrass
appearbrownandshredded.Sharpenthecuttingedges
tocorrectthiscondition.
1.Positionthemachineonalevelsurface.Raisethe
cuttingunit,engagetheparkingbrake,putthe
tractionpedalinneutral,putthePTOleverin
theOffposition,stoptheengine,andremovethe
ignitionkey.
2.Examinethecuttingendsofthebladecarefully,
especiallywheretheatandcurvedpartsofthe
blademeet(
Figure33).Sincesandandabrasive
materialcanwearawaythemetalthatconnects
theatandcurvedpartsoftheblade,checkthe
bladebeforeusingthemachine.Ifwearisnoticed
(
Figure33),replacetheblade;refertoRemovingthe
CuttingBlade.
Figure33
1.Cuttingedge3.Wear/slotforming
2.Curvedarea/sail4.Crack
WARNING
Ifthebladeisallowedtowear,aslotwillform
betweenthesailandatpartoftheblade
(Figure33).Eventually,apieceoftheblademay
breakoffandbethrownfromunderthehousing,
possiblyresultinginseriousinjurytoyourself
orbystanders.
•Inspectthebladeperiodicallyforwearor
damage.
•Replaceawornordamagedbladewitha
newTorobladetoensurecontinuedsafety
certicationoftheproduct.
3.Examinethecuttingedgesofallblades.Sharpenthe
cuttingedgesiftheyaredullornicked.Sharpenonly
thetopsideofthecuttingedgeandmaintainthe
originalcuttingangletoensuresharpness(
Figure34).
Thebladewillremainbalancedifthesameamount
ofmetalisremovedfrombothcuttingedges.
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