Maintenance

Checking the Tire Pressure in Drive System

Maintenance.

4.Disengage the park brake.

5.Push down on the brake bar until it touches the tires. There will be a 3/4 inch (19 mm) gap between the park brake handle and the slot in the control panel (see Figure 28).

Figure 28

1.

Brake bar

4.

3/4 inch (19 mm)

2.

Push down

5.

Park brake handle

3.Slot

6.There are two methods to adjust the park brake; one or both methods may be used.

A. Adjusting the lower brake lever:

a.Remove the hairpin, washer, and clevis pin from the lower brake lever and yoke as shown in Figure 29.

Figure 29

1.

Jam nut

4.

Lower brake lever

2.

Yoke

5.

Washer

3.

Clevis pin

6.

Hairpin

 

 

 

 

b.Loosen the jam nut.

c.Rotate the yoke. To tighten the brake, rotate the yoke up. To loosen the brake, rotate the yoke down.

d.Secure the yoke to lower brake lever with the hairpin, washer, and clevis pin.

e.Tighten the jam nut.

f.Check the brake operation again.

B.Adjusting the upper brake linkage:

a.Loosen the top jam nut.

b.To tighten the brake, turn the bottom jam nut clockwise (as viewed from the top) then turn the top jam nut. Move the linkage upward to achieve the desired setting.

c.To loosen the brake, turn the top jam nut counterclockwise (as viewed from the top) then turn the bottom nut counterclockwise. Move the linkage downward to achieve the desired setting.

Figure 30

1.

Move down to loosen

4.

Bottom jam nut

 

brake

 

 

2.

Move up to tighten brake

5.

Linkage

3.Top jam nut

d.Tighten the jam nuts.

e.Check the brake operation again.

7.After the brake is adjusted, the lever switch needs to be checked.

8.Check the gap between the brake lever and the switch as shown in Figure 29. The gap needs to be an 1/8 inch (3mm) with the brake engaged.

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Exmark 4500-759 Rev A manual Checking the Tire Pressure in Drive System

4500-759 Rev A specifications

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