Gravely Compact Pro 34 Operator's Manual page 20

Sharpen the Mower Blades
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. See Figure 7.
DO NOT Sharpen to This Pattern
2
DISCARD if More Than
1/2 in. (1.27 cm)
3
Sharpen to This Pattern
4
1. Cutting Edge
2. Square
Corner
Figure 7
1
4
1
3. Air Lift
Erosion
4. Air Lift
OT0792
GB - 20
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.
5. Tighten the bolts to a torque of 115-160
lbf-ft (156-217 N•m).
BATTERY
WARNING: AVOID INJURY. Read
and understand entire Safety
section before proceeding.
WARNING: Battery posts,
terminals and related accessories
contain lead and lead compounds,
chemicals known to the State of
California to cause cancer and
reproductive harm. Wash hands
after handling.
Unit comes equipped with a maintenance-
free battery that requires no regular
maintenance except cleaning the terminals.
Remove Battery
1. Shut OFF engine. Engage parking
brake. Remove the ignition key.
2. Place seat in the service position (See
Maintenance Schedule on page 17).
3. Disconnect cables from battery
(negative, then positive) (Figure 8).
1
3
1. Negative
terminal
Figure 8
2
2. Positive
terminal
3. Battery
OF1671