Mower Blades - Gravely 988100-GR1336FX, 988101-GR1536FX, 988102-GR1548FX, 988103-GR1548FL, 988104-GE1748FL, 988110-GR1332FX, 988112-GR1544FX, 988114-GR Owner's/Operator's Manual

MOWER BLADES

NOTE: If mower is used under sandy soil conditions,
replace blades when air lifts become eroded through at
ends (Figure 18).
DO NOT sharpen to this pattern
Sharpen to this pattern
DISCARD if more
than 1/2 in. (1.27 cm)
1. Cutting Edge
2. Air Lift Erosion
Figure 18
Remove
CAUTION: Use sturdy gloves or padding to
protect hands when working with mower
blades.
1. Turn the engine off. Remove the ignition key.
Remove the ignition wire from the spark plugs.
2. Remove the bolts, lock washer, flat washers, and
blades from the spindle shafts.
1
OT0792
2
GB - 24
Replace
1. Put the blades, flat washers, lock washers, and
the bolts back on the spindle shafts.
2. Tighten the bolts to a torque of 115-125 lbf-ft
(156-169.5 N•m).
3. Replace ignition wire on spark plugs.
Sharpen the Mower Blades
Figure 18.
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.
1. Remove mower blade from unit.
Discard mower blade if:
• 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 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 Mower Blades
on page 24).