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1
Figure 53
1. Hydro control linkage
2. Quick track knob
Adjusting the Control Rod
Checking the Control Rod
1. With rear of machine still on jack stands and engine
running at full throttle, move the speed control lever to
the medium speed position.
Note: The OPC levers must be held down whenever the
speed control lever is out of the neutral position or the
engine will kill.
2. Move the respective drive lever upward until it reaches
the neutral position and engage neutral locks.
3. If the tire rotates in either direction, the length of the
control rod will need to be adjusted.
Adjusting the Control Rods
1. Adjust the rod length by releasing the drive lever and
removing clevis pin. Rotate the rod in the rod fitting
(Fig. 54).
2. Lengthen the rod if the tire is turning in reverse and
shorten the rod if the tire is turning forward.
3. Rotate the rod several turns if the tire is rotating fast.
Then, adjust the rod in 1/2 turn increments.
4. Release and engage neutral lock checking that the tire
does not rotate. Continue this process until the tire does
not rotate.
5. Place the hairpin back into clevis pin (Fig. 54).
6. Repeat this adjustment for opposite side.
3
2
4
m–5403
3. Spring
4. 1 inch (26 mm)
41
5
6
4
Figure 54
1. Handle
2. Neutral lock
3. Neutral position
Tracking the Adjustment
1. Remove machine from any jack stands.
2. Check the rear tire pressure. Refer to Checking the Tire
Pressure, page 34.
3. Run the unit and observe the tracking on a level,
smooth, hard surface such as concrete or asphalt.
4. If the unit tracks to one side or the other, turn the quick
track knob. Turn the knob right to steer right and turn
the knob left to steer left (Fig. 55).
Figure 55
1. Quick track knob
Adjusting the Spring Anchor
Links
For medium or heavy duty drive conditions, such as
operating with a sulky on steep slopes, a higher spring force
may be required on the hydro pump control arms to prevent
the drive system from stalling.
1. Disengage the PTO and set the parking brake.
2
1
3
m–5388
4. Drive lever
5. Full speed forward
6. Control rod
1
m–5398
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