Gravely 992261 Owner's/Operator's Manual page 29

1. Remove mower blade from unit. Discard
mower blade if:
• More than 1/2" (1.3 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 14.
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.
See Figure 15.
4. Install mower blade(s) on unit.
5. Torque bolts to 115 – 160 lbf-ft (156 –
217 N•m).
DO NOT sharpen to this pattern.
2
Sharpen to this pattern.
DISCARD if more than
1/2" (1.27 cm).
1. Cutting Edge
2. Square Corner
3. Air Lift Erosion
4. Air Lift
Figure 14
IMPORTANT: When sharpening blades, be
sure to grind the same amount on each side.
Unbalanced blades will cause excessive
vibration and could cause the spindles to
wear prematurely.
1
4
1
3
4
1
1. Mower Blade
2. Rod
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 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
Service Position on page 25).
3. Disconnect cables from battery
(negative, then positive) (Figure 16).
4. Remove hold down bracket and remove
battery.
Replace Battery
1. Replace battery and secure with hold
down bracket.
2. Reconnect cables to battery (positive,
then negative). Position boot over
positive terminal.
3. Return seat to operating position.
Clean Battery
Keep battery and terminals clean. Inspect
every 100 operating hours or monthly for best
performance.
EN - 29
2
Figure 15