Toro Z-Master Z153 Operator's Manual page 40

2
6
1
m–4118
Figure 59
1. Clevis pin in slot
2. Nut
3. Nut—left-hand thread
4. Bolt
Adjusting Hydraulic Pump Neutral
Note: Adjust handle neutral first. That has to be correct
before the following adjustment can be made.
Danger
Mechanical or hydraulic jacks may fail to support
machine and cause a serious injury.
Use jack stand when supporting machine.
Do not use hydraulic jacks.
1. This adjustment must be made with drive wheels
turning. First raise the frame and block up so drive
wheels can rotate freely.
1
4 3
2
7
8
5. Pump rod
6. Double nuts
7. Jam nut
8. Yoke
Warning
Engine must be running so motion control
adjustment can be performed. Contact with
moving parts or hot surfaces may cause personal
injury.
Keep hands, feet, face, clothing and other body
parts away from rotating parts, muffler and other
hot surfaces.
2. Slide seat forward, disconnect prop rod and tilt seat
fully forward.
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. 59).
5. Start engine, open throttle 1/2 way and release parking
brake; refer to Starting and Stopping the Engine,
page 18.
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. 59).
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, readjust if
necessary.
9. Repeat on opposite side of unit. Tighten locknuts
against ball joints.
Warning
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.
10. Shut off unit. Remove jumper wire from wire harness
connector and plug connector into seat switch.
11. Reinstall prop rod and lower seat.
40