76
Maintenance Instructions
H24d
Adjustments
Step 5 -
Straight Tracking Adjustment
1. Sit in the seat, start the engine, set throttle at
full speed, and with the FSC in the
NEUTRAL-
PARK
position check for movement of either
drive wheel (if either wheel moves backward
or forward, refer to
Step 3 - Neutral Function
Adjustment on page 74
and readjust).
2. Check for straight ground tracking on a level
surface (with hands off the steering levers).
Set the FSC at several different speeds and
observe if the machine moves in a straight line
(use cement joint or other line on ground for
reference).
3. If travel is not straight, shorten the control rod
on the slow side by turning the tracking adjust-
ment nut clockwise. If straight tracking and
neutral cannot be achieved, turn the tracking
adjustment nut counterclockwise until neutral
is restored.
4. Lengthen the control rod of the faster side by
turning the tracking adjustment nut counter-
clockwise to match the slower side while main-
taining the neutral position.
IMPORTANT:
After tracking adjustments are
complete, confirm that there is at least one (1)
thread visible on both control rods past the
tracking adjustment nuts.
5. If the machine is tracking straight throughout
the speed range except at maximum speed,
use the following adjustment procedure:
a.
With the engine off, place the FSC in full
FORWARD.
On the faster transmission,
loosen the jam nut and turn the maximum
speed tracking adjustment set screw in
until it just contacts the limit stud, and then
turn it in an additional 1/8 turn (turning the
set screw in slows the drive wheel).
b. Recheck maximum speed tracking, and if
necessary continue adjusting the set screw
in small increments until straight travel is
achieved.
c.
Tighten the jam nut.
Step 6 -
FSC Neutral Switch Adjustment
1. Place the FSC lever in the
NEUTRAL-PARK
position. Loosen the FSC neutral switch
mounting screws and adjust the neutral switch
up or down accordingly. Refer to
FSC Neutral
Switch Adjustment
illustration.
FSC Switch
FSC Neutral Switch Location
NOTE: Adjust the switch downward for quicker
activation (Switch Open).
Deck Support
Arm (Ref)
Switch Closed
in Neutral
FSC Switch
Actuator Arm
Loosen Screws
FSC Neutral Switch Adjustment
(Side View Through Chassis)
CAUTION
Before testing the FSC Neutral Switch, dis-
connect the electrical plug on the fuel shut-
off solenoid and engage the parking brake
to prevent accidental starting and inadver-
tent machine movement.
(continued on next page)
