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Service 17
MAN0253 (Rev. 3/10/2007)
BLADE SERVICE
Frequently check blades. They should be sharp,
free of nicks and cracks, and securely fastened.
1. Inspect blades before each use to determine that
they are mounted securely and are in good condi-
tion.
2. Replace any blade that is bent, excessively nicked,
worn, or has any other damage.
3. Small nicks can be ground out when sharpening.
Blade Removal
Do not handle blades with bare hands. Careless
or improper handling may result in serious injury.
1. Remove bolt (1) which has right hand threads, Fig-
ure 9.
2. Remove washer and blade.
Blade Sharpening
NOTICE
■ When sharpening blades, be sure to balance
them. Unbalanced blades will cause excessive
vibration that can damage blade spindle bearings.
Vibration may also cause structural cracks in
mower housings.
Figure 8. Blade Balancing
1. Follow original sharpening pattern.
2. Do not sharpen blade to a razor edge, but leave
approximately 1/64" blunt edge.
3. Do not sharpen back side of blade.
4. Sharpen both cutting edges equally to keep blade
balanced. Balance blade using the method shown
in Figure 8.
Blade Installation
Your dealer can supply genuine replacement
blades. Substitute blades may not meet original
equipment specifications and may be dangerous.
NOTICE
■ When installing blade, the lift of the blade must
be toward the spindle blade housing as shown in
Figure 9. Torque bolt (1) into shaft assembly to 100
lbs-ft.
1. Place blade over blade pilot on the bottom of the
shaft assembly.
2. Place bell washer (2) over blade and insert blade
bolt (1). Torque blade bolt to 100 lbs-ft.
Figure 9. Blade and Spindle Assembly
CAUTION
CAUTION
1. 5/8 NF x 2-1/2 HHCS GR5
2. Bell washer, .64 x 2.47 x .25