90
Maintenance Instructions
D21d
Adjustments
3.
Start the engine (operate first at idle and then
normal operating speeds) and
check for
movement of the drive wheels.
NOTE:
If the engine will not start, check the
operation of the neutral safety switch.
CAUTION
NEVER attempt to disconnect any safety
devices or defeat the purpose of these
safety devices.
FSC Actuator
Rod
Adjustment
Nut
Neutral Function Adjustment
4. If drive wheels are moving,
adjust the FSC
neutral stop
by adjusting the FSC actuator
rod (see
Neutral Function Adjustment
pho
-
to). If the drive wheels are moving backward,
loosen the jam nut and lengthen the FSC
actuator rod by turning the adjustment nut
counterclockwise (CCW). If the drive wheels
are moving forward, use the opposite clock-
wise (CW) adjustment.
5. At this point it may
not be possible
to adjust
both
wheels stationary since the differential
adjust has not been made. (This is covered
by the
Straight Ground Travel Adjustment
- Step 5 on this page.)
In this case, the neu-
tral adjustment should be made for one wheel
stationary and the other moving
forward
slightly.
6. Check the
neutral safety switch
for closure
and function with the FSC in neutral (the en-
gine will not start when the switch is open).
Straight Ground Travel Adjustment - Step 5
1. Sit in the seat, start the engine (operate at
normal speed), and with the FSC in the
NEU-
TRAL-PARK
position, check for
forward
movement
of either drive wheel (if either
wheel moves
backward,
refer back to
Neutral
Function Adjustment - Step 4 on page 89
and readjust).
Tighten the steering lever
adjustment nut on the side of the mower
with the wheel moving forward
until wheel
movement stops.
2. Check for straight ground track on a
level
surface
(with
hands off
the steering levers).
Set the FSC at several different speeds and
observe if the mower moves in a straight line
(use cement joint or other line on the ground
for reference).
3.
If travel is not straight,
tighten the adjust-
ment nut that is on the same side of the
mower as the wheel that is moving too fast,
e.g., the mower tracks to the right, indicating
the LH wheel is moving too fast, tighten the LH
adjustment nut.
End Wrench on
Adjustment Nut
Straight Ground Travel Adjustment
