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7. After adjustments are made and the wheels stop when the drive lever is
in the neutral position, tighten the nut against the yokes.
c) Adjust Hydro Control Linkage:
1. Place the speed control lever in the “neutral” position. This adjustment
is again made with rear of machine on jack stands and engine running
at full throttle. OPC levers will have to be held down whenever speed
control lever is moved out of neutral position.
Note: The neutral lock latches should still be “unlocked” and in the
“forward” position.
2. Loosen the front nut on
left
hydro control link as shown in Figure 12. Turn
the rear control linkage adjusting nut counter-clockwise until wheel rotates
forward. Turn the rear nut of left control link clockwise 1/4 of a turn at a
time, stopping to move the speed control forward and back to neutral, until
left wheel
stops
rotating forward. Turn the nut an additional 1/2 turn and
tighten the front jam nut making sure not to put a bind on the linkage.
Make sure flat part of linkage is perpendicular to pin part of swivel. See
Figure 13.
FIGURE
13
HYDRO CONTROL LINKAGE/SWIVEL ADJUSTMENT
After adjusting the left hydro control linkage, move the speed control
lever to the mid-speed position and then back to the neutral position.
Recheck the left drive wheel rotation to see if further adjustment is
necessary - be sure the speed control lever is in the neutral position.
If inconsistent neutral occurs, check to be sure both springs are
properly tightened on the speed control lever under the console -
especially the rear pivot spring.
Repeat above adjustments if necessary.
3. Place the speed control lever in neutral. Adjust the right side linkage by
turning the quick track knob counter-clockwise until the tire begins to
rotate forward. Begin to retighten the knob clockwise about 1/4 turn at
a time, stopping to move the speed control forward and back to neutral.
Recheck the drive wheel rotation to see if further adjustment is
necessary.
4. The spring that keeps tension on the knob should normally not need
adjustment. However, if adjustment is needed, adjust to where length
of spring is about 1” (2.5 cm) between washers. Adjust spring length by
turning nut at front of spring.
d) Drive Lever Linkage Adjustment
1. With rear of machine still on jack stands and engine running at full
throttle, move the speed control lever to the midway position. Move the
respective drive lever upward until it reaches the
neutral
position and
engage neutral lock latches. See Figure 14. If the tire rotates in either
direction, the length of the drive lever linkage will need to be adjusted.
2. Adjust the linkage length by loosening the jam nuts at both ends of the
linkage and rotating the linkage in the ball joints. Lengthen the linkage
