Exmark Turf tracer HP, Operator'S Manual

Page: 40 / 52

- 35 -
2. Loosen the front nut on left hydro control linkage as shown in Figure
14. 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
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 Fig. 15.
FIG. 15
HYDRO CONTROL LINK/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” 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 Fig. 16. If the tire rotates in
either direction, the length of the drive lever link will need to be
adjusted.
2. 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.