Gravely 994142 - Check Mower Blades

EN - 23
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 19.
2. Disconnect spark plug wires.
See Figure 21.
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 22.
CAUTION: AVOID INJURY.
Use sturdy gloves or padding
to protect hands when working
with mower blades.
Rotation of one blade rotates
the other blades.
Figure 21
2
1
3
1. Mower Blade
2. Lower Spindle Guard
3. Upper Spindle Guard
CAUTION: DO NOT sharpen
blades while attached to unit.
CAUTION: Unbalanced blades
cause excessive vibration and
eventual damage to unit.
Balance blades before
reinstalling on unit.
NEVER weld or straighten
blades.
Figure 22
1. Cutting Edge
2. Square Corner
3. Air Lift Erosion
4. Air Lift
DO NOT sharpen
to this pattern.
Sharpen to this pattern.
DISCARD if more than
1.3 cm (1/2").
1
1
2
4
3