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CUTTING BLADES
Shutthe engineoffand removeignitionkey beforeremovingthe
cuttingblade(s)for sharpeningor replacement.Protectyour hands
usingheavygloveswhengraspingthe blade.
Periodicallyinspectthe bladeand/or spindlefor cracksor damage,
especiallyafter you've strucka foreignobject.Do not operatethe
machineuntil damagedcomponentsare replaced.
Toremovetheblades,proceedas follows.
1. Removethe deck from beneaththe mower,(referto CuttingDeck
Removalearlierinthis section)thengentlyflip thedeckoverto
exposeitsunderside.
2. Placea blockof wood betweenthe centerdeck housingbaffle
andthe cuttingbladeto act asa stabilizer.See Figure27.
J
Figure27
Removethe hexflangenutthatsecuresthe bladeto the spindle
assembly.SeeFigure27.
.
.
To properlysharpenthecutting blades,removeequalamounts
of metalfrombothendsof the bladesalongthe cuttingedges,
parallelto the trailingedge,at a 250.to 300angle.Alwaysgrind
eachcuttingbladeedge equallyto maintainproperblade balance.
See Figure28.
Ifthe cuttingedgeof thebladehas previouslybeen sharpened,or if
any metalseparationis present,replacethe bladeswith newones.
A poorlybalancedbladewill causeexcessivevibration,maydamage
to the mowerand/or resultin personalinjury.
Figure28
5. Testthe blade'sbalanceusinga blade balancer.Grindmetalfrom
the heavyend untilthe bladebalancesevenly.
NOTE: Whenreplacingtheblade,be sureto installthe bladewiththe
side of the blademarked"Bottom" (or with a partnumberstampedin
it) facingthe groundwhenthe moweris in the operatingposition.
Usea torquewrench totighten the bladespindlehexflangenut to
between70Ibs-ftand 90 Ibs-ft.
The cuttingbladesmust be installedperpendicularto eachother.If
the bladescannotbeinstalledperpendicularto eachother,the blade
timingbeltmust bereset.SeeyourSearsorotherqualifiedservice
dealerto havethe deck timing beltreset.
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