IS3100Z Series - 4 Wheel IS - 61” & 72” Mower Deck
19
Neutral Adjustment
If the tractor “creeps” while the ground speed control
levers are locked in NEUTRAL, than it may be
necessary to adjust the linkage rod.
NOTE: Perform this adjustment on a hard, level surface
such as a concrete floor.
1. Disengage the PTO, engage the parking brake and
turn off the engine.
2. There are three (3) nuts on the linkage rod. The first
two are to be used together to turn the rod and the
third (towards the front of the machine) is used to
lock the rod in place. Loosen the jam nut that locks
against the clevis (B, Figure 35) and turn the linkage
rod (A) to adjust. If the machine creeps forward, turn
the rod CLOCKWISE (while standing at the rear of
the machine, facing forward), if the machine creeps
backward, turn the rod COUNTER-CLOCKWISE.
3. Lock the jam nut (B) against the clevis when neutral
is achieved.
NOTE: This adjustment should not be performed while
the machine is running. It may take several attempts to
achieved neutral, depending upon how much the
machine creeps.
Figure 35. Neutral Adjustment
A. Adjustment Linkage Rod
B. Nuts
A
B
Speed Balancing
Adjustment
If the rider veers to the right or left when the ground
speed control levers are in the maximum forward
position, the top speed of each of these levers can be
balanced by turning the adjustment bolt(s) (A, Figure
34). Only adjust the speed of the wheel that is traveling
faster.
To Reduce the Speed of the Faster Wheel
1. Loosen the flange nuts.
2. turn the top speed adjustment bolt COUNTER-
CLOCKWISE to reduce the speed.
3. Retighten the flange nuts when adjustment is
complete.
WARNING
DO NOT adjust the tractor for a faster overall
speed forward or reverse than it was designed for.
Figure 34. Top Speed Adjustment
A. Top Speed Adjustment Bolt
B. Flange Nut
B
A
