Speed Balancing Adjustment - Ferris Evolution Series Operator's Manual

Speed Balancing Adjustment

If the unit veers to the right or left when the ground
speed control levers are in either the maximum
forward or reverse position, the top speed of the
ground speed control levers can be adjusted. Only
adjust the speed of the wheel that is travelling faster.
To reduce the forward speed of the faster wheel:
Coarse Adjustment
1. Loosen the inner jam nut (A, Figure 29).
2. Turn the adjustment nut (B) CLOCKWISE to
reduce the speed.
3. Retighten the securing nut.
NOTE: If you cannot achieve the proper adjustment
using the Coarse Adjustment Procedure proceed to
the Fine Adjustment Procedure.
Fine Adjustment
1. Loosen the jam nut (A, Figure 30).
2. Loosen and remove the eyebolt hardware (B)
that secures they eyebolt (C) to the ground speed
control lever arm (D).
3. Turn the eyebolt CLOCKWISE to reduce the
speed.
4. Reinstall the eyebolt to the ground speed control
lever arm with the eyebolt hardware.
5. Retighten the jam nut when the adjustment is
complete.
To reduce the reverse speed of the faster wheel:
1. Loosen the securing nut (A, Figure 31).
2. Turn the top speed adjustment bolt (B)
COUNTER-CLOCKWISE to reduce the speed.
3. Retighten the securing nut when adjustment is
complete.
WARNING
Do NOT adjust the tractor for a faster overall
speed forward or reverse than it was designed
for.
Regular Maintenance
Figure 29. Speed Balancing Coarse Adjustment
A. Inner Jam Nut
B. Adjustment Nut
C
B
Figure 30. Speed Balancing Fine Adjustment
A. Jam Nut
B. Eyebolt Hardware
C. Eyebolt
D. Ground Speed Control Lever Arm
Figure 31. Reverse Speed Balancing Adjustment
A. Securing Nut
B. Top Speed Adjustment Bolt
B A
A
D
B
A
29