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Figure 49
1. Speed control lever
2. Rear pivot spring
15. Tighten the front nut on left hydro control
linkage shown in Figure 48.
Adjusting the Right Side Linkage
1. With the machine on jack stands, place the
speed control lever in the neutral position.
2. Place the right drive lever in the full forward
position.
3. Hold the OPC levers down.
Note: The OPC levers must be held down
whenever the speed control lever is out of the
neutral position or the engine will kill.
4. Adjust the right side linkage by turning the
quick track knob counterclockwise until the
tire begins to rotate forward (Figure 50).
5. Turn the knob clockwise a 1/4 of a turn at a
time. Then move the speed control forward
and back to neutral. Repeat this until right
wheel stops rotating forward (Figure 50).
6. The spring that keeps tension on the knob
should normally not need adjustment.
However if an adjustment is needed, adjust the
length of spring to 1 inch (26 mm) between
the washers (Figure 50).
7. Adjust the spring length by turning the nut at
the front of spring (Figure 50).
8. After adjusting the right hydro control linkage,
move the speed control lever forward and then
back to the neutral position.
9. Make sure the speed control lever is in the
neutral position and the tire does not rotate.
10. Repeat adjustment if needed.
3. spring
Figure 50
1. Hydro control linkage
2. Quick track knob
3. Spring
Checking and Adjusting the Left and
Right Speed Control Linkage Travel
The speed control lever has extra travel available
to ensure full pump engagement.
It is important to have the same amount of travel
for both the left and right speed control linkages.
1. Move the speed control lever to the full speed
forward position.
2. Measure the gap as shown in Figure 51 for
both the left and right sides. No adjustment is
needed if they are equal.
3. If needed, adjust the right side linkage by
turning the quick track knob until the gap in
Figure 51 matches the left side (Figure 50).
4. If needed, adjust the left side linkage by
adjusting the front and back swivel nuts until
the gap in Figure 51 matches the right side
(Figure 48).
5. After adjusting the hydro control linkage, move
the speed control lever forward and then back
to the neutral position.
40
4. 1 inch (26 mm)
5. Nut in front of spring
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