Adjusting The Tracking; Adjusting The Caster Pivot Bearing - Toro 74179 Operator's Manual

6. Tighten the nuts at the ball joints (Fig. 47).
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.
7. After both pump neutrals are set, shut off the machine.
8. Remove jumper wire from wire harness connector and
plug connector into seat switch.
9. Reinstall prop rod and lower the seat into position.

Adjusting the Tracking

The left–hand pump has a knob for adjusting the tracking.
Important
Adjust the handle neutral and hydraulic
pump neutral before adjusting the tracking. Refer to
Adjusting the Handle Neutral on page 36 and Adjusting the
Hydraulic Pump Neutral on page 38.
1. Push both control levers forward the same distance.
2. Check if the machine pulls to one side. If it does, stop
the machine and set the parking brake.
3. Tip the seat up to access the tracking knob.
Note: Determine the left and right sides of the machine
from the normal operating position.
4. To make the machine go right, turn the knob towards
the rightside of the machine. Refer to figure 49.
5. To make the machine go left, turn the knob towards the
leftside of the machine. Refer to figure 49.
6. Repeat adjustment until the tracking is correct.
2
1
1. Pump rod
2. Turn this way to track left
3. Tracking knob
Adjusting the Caster Pivot
Bearing
Check after every 500 operating hours or at storage,
whichever occurs first.
1. Stop the engine, set the parking brake, remove the key,
and disconnect the spark plug wire(s) from the spark
plug(s).
2. Remove the dust cap from the caster and tighten the
locknut (Fig. 50).
3. Tighten until the spring washers are flat and then back
off 1/4 turn to properly set the preload on the bearings
(Fig. 50).
Important Make sure that the spring washers are
installed correctly as shown in Figure 50.
1. Spring washers
2. Locknut
39
Figure 49
4. Turn this way to track
right
3
2
1
Figure 50
3. Dust cap
3
4
m–6280
m–4640