Exmark VH15KA483 - Manual (Page 34)

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3. Squeeze the respective drive lever until an increased resistance is felt,
this is where neutral should be.
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.
FIGURE 12
4. Loosen the nut against the neutral control linkage yoke as shown in
Figure 12.
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 and the park brake
must be disengaged whenever speed control levers are moved out of
the neutral position.
Note: The neutral lock latches should be “unlocked” and in the forward
position
2. Loosen the front nut on left hydro control linkage 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 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 Figure 13.