Toro Groundsmaster 4500-D - Inspecting and Sharpening Cutting Unit Blade(s)

InspectingandSharpening
theCuttingUnitBlade(s)
Twoareasmustbeconsideredwhencheckingand
servicingthemowerblade—thesailandthecutting
edge.Bothcuttingedgesandthesail,whichis
theturned-upportionoppositeofthecuttingedge,
contributetoagoodqualityofcut.Thesailis
importantbecauseitliftsthegrassupstraight,thereby
producinganevencut.However,thesailgradually
wearsdownduringoperation.Asthesailwears
down,thequalityofcutdegrades,althoughthecutting
edgesaresharp.Thecuttingedgeoftheblademust
besharpsothatthegrassiscutratherthantorn.A
dullcuttingedgeisevidentwhenthetipsofthegrass
appearbrownandshredded.Sharpenthecutting
edgestocorrectthiscondition.
1.Parkthemachineonalevelsurface,raisethe
cuttingunit,engagetheparkingbrake,putthe
tractionpedalinNEUTRAL,putthePTOlever
intheOFFposition,shutofftheengine,and
removethekeyfromtheignition.
2.Examinethecuttingendsofthebladecarefully,
especiallywheretheatandcurvedpartsofthe
blademeet(Figure130).
Note:Becausesandandabrasivematerial
canwearawaythemetalthatconnectsthe
atandcurvedpartsoftheblade,checkthe
bladebeforeusingthemower.Ifwearisnoticed
(Figure130),replacetheblade.
g004653
Figure130
1.Cuttingedge3.Wear/slotforming
2.Curvedarea4.Crack
3.Examinethecuttingedgesofalloftheblades
andsharpenthecuttingedgesiftheyaredull
ornicked(Figure131).
Note:Sharpenonlythetopofthecuttingedge
andmaintaintheoriginalcuttingangletoensure
sharpness(Figure131).Thebladeremains
balancedifyouremovethesameamountof
metalfrombothcuttingedges.
g000276
Figure131
1.Sharpenattheoriginalangle.
87