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1. Mower Blade
2. Lower Spindle Guard
3. Upper Spindle Guard
Figure 29
Sharpen Blades
CAUTION: DO NOT sharpen
blades while attached to unit.
1. Remove blades. Discard blades if:
• More than 1.3 cm (1/2") of metal is
removed.
• Air lifts are eroded.
• Blades are bent or broken.
2. File or grind an equal amount of metal
from each cutting edge of the blade until
sharp. DO NOT change angle of cutting
edge or round the corner of the blade.
See Figure 30.
DO NOT sharpen to this
pattern.
2
2
Sharpen to this pattern.
1
DISCARD if more than
1.3 cm (1/2")
1. Cutting Edge
2. Square Corner
3. Air Lift Erosion
4. Air Lift
3. Check blade balance by sliding an
Install Blades
See Figure 29.
1. Secure lower spindle guards and blades
2. Reconnect spark plug wires.
EN - 27
3
Figure 30
CAUTION: Unbalanced blades
cause excessive vibration and
eventual damage to unit.
Balance blades before
reinstalling on unit.
NEVER weld or straighten
blades.
unthreaded bolt through center hole. Hold
the bolt level. If blade does not remain
horizontal, sharpen the heavy end until
blade is balanced.
CAUTION: Mating surfaces
between spindle, lower spindle
guard, blade and washer MUST
be free of debris to ensure
correct tightness and alignment.
to spindles with one bevel washer and
hex bolt. Torque to 156 N•m – 217 N•m
(115 lb-ft – 160 lb-ft).
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1
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