Toro 30607 - Inspecting and Sharpening the Cutter Blade(S)

Important:Thecurvedpartoftheblade
mustbepointingtowardtheinsideofthe
cuttingunittoensurepropercutting.
Note:Afterstrikingaforeignobject,torqueall
thespindlepulleynutsto115to149N-m(85
to110ft-lb).
g004741
Figure110
1.Bladebolt2.Anti-scalpcup
InspectingandSharpening
theCutterBlade(s)
DANGER
Awornordamagedbladecanbreak,and
apieceofthebladecouldbethrowninto
theoperator'sorbystander'sarea,resulting
inseriouspersonalinjuryordeath.Trying
torepairadamagedblademayresultin
discontinuedsafetycerticationofthe
product.
•Inspectthebladeperiodicallyforwearor
damage.
•Nevertrytostraightenabladethatisbent
orweldabrokenorcrackedblade.
•Replaceawornordamagedblade.
Twoareasmustbeconsideredwhencheckingand
servicingthecutterblade-thesailandthecutting
edge.Bothcuttingedgesandthesail,whichisthe
turnedupportionoppositethecuttingedge,contribute
toagoodquality-of-cut.Thesailisimportantbecause
itliftsthegrassupstraight,therebyproducingan
evencut.However,thesailwillgraduallyweardown
duringoperation,andthisconditionisnormal.As
thesailwearsdown,thequality-of-cutwilldegrade
somewhat,althoughthecuttingedgesaresharp.
Thecuttingedgeoftheblademustbesharpsothat
thegrassiscutratherthantorn.Adullcuttingedge
isevidentwhenthetipsofthegrassappearbrown
andshredded.Sharpenthecuttingedgestocorrect
thiscondition.
1.Positionthemachineonalevelsurface.Raise
thecuttingunit,engagetheparkingbrake,put
thetractionpedalinneutral,putthePTOlever
intheOffposition,stoptheengine,andremove
theignitionkey.
2.Examinethecuttingendsofthebladecarefully,
especiallywheretheatandcurvedpartsof
theblademeet(Figure111).Sincesandand
abrasivematerialcanwearawaythemetalthat
connectstheatandcurvedpartsoftheblade,
checkthebladebeforeusingthemower.Ifwear
isnoticed(Figure111),replacetheblade.
g004653
Figure111
1.CuttingEdge3.Wear/slotForming
2.CurvedArea4.Crack
3.Examinethecuttingedgesofalloftheblades.
Sharpenthecuttingedgesiftheyaredullor
nicked.Sharpenonlythetopofthecuttingedge
andmaintaintheoriginalcuttingangletomake
sureofsharpness(Figure112).Thebladewill
remainbalancedifthesameamountofmetalis
removedfrombothcuttingedges.
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