GB - 23
Sharpen the Mower Blades
1. Remove mower blade from unit.
Discard mower blade if:
•
More than 1.27 cm (1/2 in.) of metal is removed.
•
Air lifts become eroded.
•
Blade is bent or broken.
2. Sharpen mower blade by removing an equal amount of
material from each end of mower blade. DO NOT
change angle of cutting edge or round the corner of the
mower blade.
3. Check mower blade balance.
Slide mower blade on an unthreaded bolt. A balanced
blade should remain in a horizontal position. If either
end of mower blade moves downward, sharpen the
heavy end until blade is balanced.
4. Install mower blade(s) on unit (See Replace Mower
Replacing Mower Spindle Bearings 32" and 36"
Decks
1. Turn the engine off. Remove the ignition key. Remove
the ignition wire from the spark plugs.
2. Remove mower blade.
3. Remove nut, flat washer, spacer and pulley.
4. Remove spindle shaft, lower bearing and spacer from
spindle housing. Discard bearing.
5. Remove and discard upper bearing.
6. Clean entire assembly.
7. Install a new lower bearing and spacer on the spindle
shaft.
8. Install the spindle shaft, lower bearing and spacer into
the spindle housing.
9. Install the upper bearing.
10. Install spacer.
11. Install pulley and nut. Tighten nut to 115 N•m (85 lb.-ft).
12. Grease the spindle. See GENERAL LUBRICATION on
13. Install mower blade, blade washers and blade bolt
assembly. Tighten bolt to 163 N•m (120 lbf.-ft).
CAUTION: DO NOT sharpen mower blades
while on unit. An unbalanced mower blade will
cause excessive vibration and eventual
damage to unit. Check mower blade balance
before reinstalling blades.
NEVER weld or straighten bent blades.
Figure 19
1. Spacers (Number will vary based on cutting height.)
2. Blade
3. Blade Bolt
IMPORTANT: Avoid damage! The clearance between
the lower bearing and the housing is only 0.05 mm
(0.002 in.). Do not force bearing into housing.
1. Grease Fitting
2. Nut
3. Flat Washer
4. Spacer
5. Pulley
6. Retaining Ring
7. Upper Bearing
8. Spindle
Housing
9. Spindle Spacer
10. Lower Bearing
11. Spindle Shaft
Содержание 988410
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