Hydro Drive Linkage Adjustment

Make sure you have not reached the end of the neutral lock latch slot. If you have, shorten the drive lever linkage. If the wheel turns while holding the drive lever in neutral, the neutral control linkages need to be adjusted. If wheel stop then go to step 7.

FIG. 15

4.Loosen the nut against the neutral control linkage yoke as shown in Figure 15.

5.Adjust the neutral control linkage until the respective drive wheel stops when the lever is pulled against the neutral spring (neutral position). Turn the adjusting bolt approximately 1/4 turn clockwise if the wheel is turning in reverse or turn the bolt approximately 1/4 turn counter-clockwise if the wheel is turning forward. Release the drive lever to the forward drive position and squeeze back into the neutral position. Check to see if the wheel stops. If not, repeat the above adjustment procedure.

6.Make this adjustment on both sides.

7.After adjustments are made and the wheels stop when the drive levers are in the neutral position, tighten the nuts against the yokes.

c)Adjust Hydro Control Linkages:

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 levers are moved out of the neutral position.

2.Loosen the front nut on left hydro control linkage as shown in Figure 15. Turn the rear control linkage adjusting nut counter-clockwise until wheel rotates forward. Turn the rear nut of left control linkage 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. 16.

FIG. 16

HYDRO CONTROL LINK/SWIVEL ADJUSTMENT

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