GB - 27
1. Remove mower blade from unit.
Discard mower blade if (figure 34):
• More than 1/2 in. (1.27 cm) 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
mower blade.
3. Check mower blade balance.
Balancing Blades
1. Clean blade.
2. Put blade on nail or round pin in a vise.
Turn blade to horizontal position.
3. Check balance. If blade is not balanced,
heavy end of blade will drop.
4. Grind bevel of heavy end. Do not
change blade bevel.
Replacing Mower Spindle Bearings
1. Park unit safely. See Using the Parking
Brake on page 13.
NOTE: The mower blade can remain
attached to the spindle shaft for this
procedure but may be removed if preferred.
2. Support blade/spindle shaft assembly
(J) and remove nut (A), washer (B),
spacer (C) and pulley (D).
3. Remove blade/spindle shaft assembly
(J) from spindle housing (G).
4. Remove lower bearing (H) and spacer
(F) from spindle housing (G). Discard
bearing.
5. Remove and discard upper bearing (E).
6. Clean entire assembly.
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 34
1
2
DO NOT Sharpen To This Pattern
Sharpen To This Pattern
DISCARD if more
than 1/2 in. (1.27 cm)
1. Air Lift Erosion Area
2. Cutting Edge
CAUTION: Avoid injury! Mower
blades are sharp. Always wear
gloves when handling mower
blades or working near blades.
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