EN - 27
CHECK MOWER BLADES
Check blades for wear. Replace or sharpen
as needed.
Remove Blades
1. Place unit in service position. See
Service Position on page 23.
2. Disconnect spark plug wires.
See Figure 29.
3. Remove hardware retaining blades and
lower spindle guards to spindle and
remove parts. Retain all parts for
reinstallation.
4. Clean all grass, dirt and debris from
upper and lower spindle guards.
Sharpen Blades
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.
3. Check blade balance by sliding an
unthreaded bolt through center hole. Hold
the bolt level. If blade does not remain
horizontal, sharpen the heavy end until
blade is balanced.
CAUTION: AVOID INJURY. Use
sturdy gloves or padding to
protect hands when working with
mower blades.
Rotation of one blade rotates the
other blades.
CAUTION: DO NOT sharpen
blades while attached to unit.
Figure 29
1. Mower Blade
2. Lower Spindle Guard
3. Upper Spindle Guard
1
2
3
CAUTION: Unbalanced blades
cause excessive vibration and
eventual damage to unit.
Balance blades before
reinstalling on unit.
NEVER weld or straighten
blades.
Figure 30
DO NOT sharpen to this
pattern.
Sharpen to this pattern.
1. Cutting Edge
2. Square Corner
3. Air Lift Erosion
4. Air Lift
DISCARD if more than
1.27 cm (1/2")
1
1
2
4
3
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