Hydro Control LINK/SWIVEL Adjustment

neutral, until left wheel stops rotating forward. Turn the rear nut an additional 1/2 turn and tighten the front 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 15.

FIGURE 15

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” between the 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 16. If the tire rotates in either direction, the length of the drive lever link will need to be adjusted.

2.For Standard Pistol Grip Handles: Adjust the linkage length by releasing the drive lever and removing clevis pin and rotating the linkage in the lower swivel. Lengthen the linkage if the tire is turning in reverse and shorten the linkage if the tire is creeping forward. Rotate the linkage several turns if the tire is rotating fairly fast. But as the adjustment gets closer, adjust the linkage in 1/2 turn increments. Release and re-engage neutral lock latch checking that the tire stops. Continue this process until the tire is at a dead stop. Replace the hairpin back into each clevis pin.

For ECS Handles: 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 if the tire is turning in reverse and shorten the linkage if the tire is creeping forward. Tighten the jam nuts at both ends. Release and re-engage the neutral lock latch checking that the tire stops. Continue this process until the tire is at a dead stop.

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