Gravely Promaster 260Z Owner's/Operator's Manual page 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 on unit.
ANTI-SCALP ROLLER ADJUSTMENT
Anti-scalp rollers are set at the factory for typical mowing
height, but can be adjusted for high or low cutting conditions
(figure 12).
WARNING: Prior to adjusting anti-scalp rollers,
shut off engine, set parking brake, and remove
ignition key.
Rollers are intended to prevent lawn scalping, not to control
cutting height.
For a very high cutting height, set rollers in their lowest
position on bracket.
For a very low cutting height, set rollers in their highest
position on bracket.
All rollers should be set at the same height.
MOWER DECK REMOVAL
DANGER: MOVING PARTS can cut or amputate
body parts. ALWAYS wait for moving parts to stop
before performing maintenance or service.
Removal (Figure 13)
NOTE: Only remove PTO belt from electric clutch.
1. Remove PTO belt from electric clutch (see PTO Belt
Removal on page 21).
2. Remove link chains from mower lift arms.
3. Remove mounting pin and mower mounting arms from
mower deck.
4. Slide mower deck out from under unit.
Installation (Figure 13)
1. Slide mower deck under unit.
IMPORTANT: To prevent damage to PTO belt, mounting
pins MUST be installed as shown in figure 13.
2. Install mower mounting arms on mower deck with
mounting pins.
3. Install link chains on mower lift arms.
Highest
Roller
Position
Lowest
Roller
Position
Figure 12
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4. Install PTO belt on electric clutch (see PTO Belt
Removal on page 21).
5. Level mower deck (see Leveling the Mower Deck on
page 20).
4
5
1. Mower Lift Arm
2. Link Chain
3. Mower Deck
LEVELING THE MOWER DECK
These adjustments should be made on a level surface with
tires inflated to the correct air pressure.
Mower deck is leveled from side to side with the slots where
four chains fasten to mower mounting brackets. Mower deck
is leveled from front to rear by adjusting rod running down
each side of frame (figure 14).
1. Shut off engine. Set parking brake. Remove ignition key.
2. Raise mower deck and insert 3 in. (7.6 cm) tall blocks to
support deck.
3. Lower deck onto blocks so chains are slack.
4. Measure from bottom of mower blade end to ground.
5. Set hydraulic lift cylinder so cut of height reads the same
as blade height measurement.
GB - 20
1
6
2
3
4. Mower Mounting Arm
5. Mounting Pin
6. PTO Mower Belt
Figure 13
2
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