Tracking Adjustment

Maintenance

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 inch (2.5 cm) between the washers. Adjust spring length by turning nut at front of spring.

•Drive Lever Linkage Adjustment:

1.With rear of machine still on jack stands and engine running at full throttle, disengage the park brake and 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 (Figure 21). If the tire rotates in either direction, the length of the drive lever link will need to be adjusted.

1.Stop engine and wait for all moving parts to stop.

2.Check the drive tire pressures and tire circumferences as stated in Check the Tire Pressures section in Maintenance.

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, turn the knob left to “steer” left.

Hydro Pump Spring Tension Setting

1.For medium or heavy duty drive conditions such as operation 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.

2.For a heavier drive setting, relocate the spring anchor link as shown in Figure 13. The spring anchor links are located under the engine deck on the left and right hand sides.

Note: In “medium” or “heavy duty” positions, the drive lever forces at the upper handle will also be increased.

Figure 21

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 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.

3.Make this adjustment for both sides.

4.Stop engine and wait for all moving parts to stop. Raise rear of machine, remove jack stands, and carefully lower machine to the ground.

Figure 22

1.	Heavy duty	3.	Standard
2.	Medium duty	4.	Retaining bolt