Exmark 4500-645 manual Caster Pivot Bearings Pre-Load Adjustment, Adjusting the Tilt

Models: 4500-645

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Maintenance

 

 

Figure 41

 

 

 

Figure 42

 

 

 

 

 

RH Motion Control Shown

1.

Bolts

4.

Nuts

 

 

 

 

 

2.

Control lever

5.

Slotted holes

1.

Screw

3. Motion control lever

3.

Control arm shaft

 

 

2.

Cover plate

2.Move the control lever to the next set of holes. Secure the lever with the two bolts.

3.Repeat the adjustment for the opposite control lever.

Adjusting the Tilt

The motion control levers can be tilted fore or aft for maximum operator comfort.

1.Loosen the upper bolt holding the control lever to the control arm shaft.

2.Loosen the lower bolt just enough to pivot the control lever fore or aft Figure 41. Tighten both bolts to secure the control in the new position.

3.Repeat the adjustment for the opposite control lever.

Motion Control Full Forward Tracking Adjustment

If the machine travels or pulls to one side when the motion control levers are in the full forward position, adjust the cover plates.

1.Loosen the screws on a cover plate (see Figure 42).

2.Slide the cover plate backward or forward to adjust the travel of the lever and tighten the screws.

3.Drive the machine and check the full forward tracking.

4.Repeat steps 1 through 3 until desired tracking is obtained.

Caster Pivot Bearings Pre-Load Adjustment

Remove dust cap from caster and tighten nyloc nut until washers are flat and back off 1/4 of a turn to properly set the pre-load on the bearings. If disassembled, make sure the spring disc washers are reinstalled as shown in Figure 43.

Figure 43

1.Spring disc washers

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Exmark 4500-645 manual Caster Pivot Bearings Pre-Load Adjustment, Adjusting the Tilt