Gravely MINI-ZT 915054 Owner's/Operator's Manual page 20

Forward and Reverse Speed
Adjustment
(Figure 20)
IMPORTANT: The unit should track within 2
feet (0.61 m) of a straight line for 30 feet
(9.14 m).
The travel of the steering levers may need
adjustment if:
• The unit turns to the right or left when
both steering levers are pushed as far
forward as possible.
• The unit turns to the right or left when
both steering levers are pulled back as
far rearward as possible.
1
REPLACING PTO BELT
Remove (Figure 21)
1. Lower mower deck to the ground.
2. Remove belt covers from mower deck.
CAUTION: Use care when releasing
idler spring tension. Keep body parts
well away from idler when performing
this operation.
3. Pull idler arm towards outside of unit until
tension is removed from PTO belt.
4. Remove PTO belt from left mower deck
pulley.
5. Slowly release idler arm until tension is
removed from idler spring.
Install (Figure 21)
NOTE: Do not install PTO belt on left mower
1. Forward Travel Adjustment Bolt
2. Rear Travel Adjustment Bolt
3. Steering Lever
Figure 20
GB - 20
NOTE: The side the unit turns toward
indicates that the wheel on that side is turning
slower than the other wheel. Either the wheel
that is turning faster needs to slow down or
the wheel that is turning slower needs to be
sped up to allow the unit to travel in a straight
line.
1. Determine which way the unit turns.
NOTE: The forward travel adjustment bolt
adjusts the forward travel of the steering
lever. The rear travel adjustment bolt adjusts
the rearward travel of the steering lever.
2. Adjust speed by:
• Turning adjustment bolt clockwise to
decrease steering lever travel.
• Turning adjustment bolt counter
clockwise to increase steering lever
travel.
3
2
6. Remove PTO belt from mower deck and
electric clutch.
2
1
1. Idler Spring
2. Electric Clutch
3. PTO Belt
deck pulley in step 1.
OE0019
3
4
5
6
4. Idler Pulley
5. Idler Arm
6. Belt Cover
Figure 21
7
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