Exmark 000 & higher, 312 manual Maintenance, Drive Lever Linkage Adjustment

Models: 0 312 000 & higher

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• Drive Lever Linkage Adjustment:

Maintenance

to be held down and the park brake must be

clockwise about 1/4 turn at a time, stopping

disengaged whenever speed control levers are

to move the speed control forward and back

moved out of the neutral position.

to neutral. Recheck the drive wheel rotation

Note: The neutral lock latches should be

to see if further adjustment is necessary.

4. The spring that keeps tension on the knob

“unlocked” and in the forward position.

2. Loosen the front nut on left hydro control

should normally not need adjustment.

However, if adjustment is needed, adjust to

linkage as shown in Figure 18. Turn the rear

where length of spring is about 1 inch (2.5 cm)

control linkage adjusting nut counterclockwise

between the washers. Adjust spring length by

until wheel rotates forward. Turn the rear nut

turning nut at front of spring.

of left control linkage clockwise 1/4 of a turn

Drive Lever Linkage Adjustment:

at a time, stopping to move the speed control

forward and back to neutral, until left wheel

1. With rear of machine still on jack stands and

stops rotating forward.

engine running at full throttle, disengage

Turn the rear nut an additional 1/2 turn and

the park brake and move the speed control

tighten the front nut making sure not to put

lever to the midway position. Move the

a bind on the linkage. Make sure flat part of

respective drive lever upward until it reaches

linkage is perpendicular to pin part of swivel

the neutral position and engage neutral lock

(see Figure 19).

latches (Figure 20). If the tire rotates in either

 

 

 

 

 

 

 

 

direction, the length of the drive lever link will

 

 

 

 

 

 

 

 

need to be adjusted.

 

 

 

 

 

 

 

 

 

Figure 19

1.

Left Hydro Control Link

4.

Linkage is perpendicular

 

(left side shown)

 

to pin (correct position)

2.

Front nut

5.

Linkage in incorrect

 

 

 

position

3.

Rear nut

6.

End view of swivel

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.

Important: 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 counterclockwise until the tire begins to rotate forward. Begin to retighten the knob

Figure 20

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

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Exmark 000 & higher, 312 manual Maintenance, Drive Lever Linkage Adjustment