BladeMaintenance
BladeSafety
•Inspectthebladeperiodicallyforwearordamage.
•Usecarewhencheckingtheblades.Wrapthe
bladesorweargloves,andusecautionwhen
servicingtheblades.Onlyreplaceorsharpenthe
blades;neverstraightenorweldthem.
•Onmulti-bladedmachines,takecareasrotating1
bladecancauseotherbladestorotate.
ServicingtheBlade
RemovingandInstallingthe
Cutting-UnitBlade(s)
Replacethebladeifithitsasolidobject,isout
ofbalance,orisbent.AlwaysusegenuineT oro
replacementbladestoensuresafetyandoptimum
performance.
1.Parkthemachineonalevelsurface,raisethe
cuttingunittothehighestposition,engagethe
parkingbrake,shutofftheengine,andremove
thekey.
Note:Blockthecuttingunittopreventitfrom
accidentallyfalling.
2.Grasptheendofthebladeusingaragor
thickly-paddedglove.
3.Removethebladebolt,anti-scalpcup,and
bladefromthespindleshaft(Figure72).
g004741
Figure72
1.Bladebolt2.Anti-scalpcup
4.Installtheblade,anti-scalpcup,andbladebolt
andtightenthebladeboltto115to149N∙m(85
to110ft-lb).
Important:Thecurvedpartoftheblade
mustbepointingtowardtheinsideofthe
cuttingunittoensurepropercutting.
Note:Afterstrikingaforeignobject,torqueall
spindle-pulleynutsto115to149N∙m(85to110
ft-lb).
InspectingandSharpeningthe
Blade
Note:Checkthebladebeforeusingthemachine.
Sandandabrasivematerialcanwearawaythemetal
thatconnectstheatandcurvedpartsoftheblade.If
younoticewear,replacetheblade;refertoInspecting
andSharpeningtheBlade(page57).
1.Performthepre-maintenanceprocedure;refer
toPreparingtheMachineforMaintenance(page
37).
2.Blockthecuttingunittopreventitfromfalling
accidentally.
3.Examinethecuttingendsofthebladecarefully,
especiallywheretheatandcurvedpartsofthe
blademeet(Figure73).
g031648
Figure73
1.Cuttingedge3.Damagedarea(wear,slot,
orcrack)
2.Sail
4.Inspectthecuttingedgesofalltheblades.
Sharpenthecuttingedgesiftheyaredullor
nicked,sharpenonlythetopofthecuttingedge,
andmaintaintheoriginalcuttingangletoensure
sharpness(Figure74).
Note:Thebladeremainsbalancedifthesame
amountofmetalisremovedfrombothcutting
edges.
g006926
Figure74
1.Sharpenthebladeatthisangleonly.
5.Laythebladeonalevelsurfaceandcheckits
endstoensurethatthebladeisstraightand
parallel.
57