40
3. Disconnect electrical connector from the seat safety
switch. Temporarily install a jumper wire across
terminals in the wiring harness connector.
4. Loosen locknut at ball joint on pump control rod
(Fig. 52).
5. Start engine, open throttle 1/2 way and release parking
brake. Refer to Starting and Stopping the Engine, page
21.
Note: The front nut of each rod has left–hand threads.
6. Adjust pump rod length by rotating double nuts on rod,
in the appropriate direction, until wheel is still or
slightly creeps in reverse (Fig. 52).
7. Move motion control lever forward and reverse, then
back to neutral. Wheel must stop turning or slightly
creep in reverse.
Note: Motion control lever must be in neutral while
making any adjustments.
8. Open throttle to fast. Make sure wheel remains
stopped or slightly creeps in reverse, re-adjust if
necessary.
9. Repeat on opposite side of unit. Tighten locknuts
against ball joints.
Electrical system will not perform proper safety
shut off with jumper wire installed.
• Remove jumper wire from wire harness
connector and plug connector into seat switch
when adjustment is completed.
• Never operate this unit with jumper installed
and seat switch bypassed.
Warning
10. Shut off unit. Remove jumper wire from wire harness
connector and plug connector into seat switch.
11. Reinstall prop rod and lower seat.
Replacing the Pump Drive Belt
Check pump drive belt for wear after every 50 hours of
operation.
1. Pull spring loaded idler down and remove traction belt
from the engine and hydro pump pulleys (Fig. 53).
Remove belt between pulleys.
2. Install new belt around engine and hydro pump pulleys
(Fig. 53).
3. Pull spring loaded idler down and align below traction
belt. Release pressure on spring loaded idler (Fig. 53).
Figure 53
Adjusting the Parking Brake
Check parking brake for proper adjustment.
1. Disengage brake lever (lever down).
2. Measure the length of the spring. Measurement should
be 2.75 in. (70 mm) between washers (Fig. 54).
3. If adjustment is necessary, loosen the jam nut below
the spring and tighten the nut directly below the yoke
(Fig. 54). Turn the nut until the correct measurement is
obtained. Tighten the two nuts together and repeat on
opposite side of unit.
4. Turn nuts clockwise to shorten spring length and turn
counter–clockwise to lengthen the spring.
5. Engage parking brake, lever up.
A. Measure the distance between the trunnion roller
and the collar on brake rod . Measurement should
be 3/16–1/4 in. (5–7 mm) (Fig. 54).
6. If adjustment is necessary, loosen the jam nut directly
below the yoke. Turn the bottom rod until the correct
measurement is obtained (Fig. 54). Tighten jam nut at
yoke
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