Exmark ARX481CKA30000, Operator'S Manual

Page: 34 / 48

Maintenance
2. Lift the rear of the unit and support using jack
stands or equivalent support.
3. Check the chains on both sides of the unit for
proper tension. The chains should be able to
move up and down 1/4-1/2 inch (6-12 mm).
4. To adjust, loosen the idler bolt and push down on
the sprocket to tension the chain.
5. Recheck the chain tension and tighten the idler
bolt.
Tine Drive Chain Adjustment
1. Stop engine, wait for all moving parts to stop, and
remove key. Engage parking brake.
2. Lift the rear of the unit and support using jack
stands or equivalent support.
3. Check the chains on both sides of the unit for
proper tension. The chains should be able to
move up and down 1/4-1/2 inch (6-12 mm).
4. To adjust, loosen the idler bolt and push down on
the sprocket to tension the chain.
5. Recheck the chain tension and tighten the idler
bolt.
Adjusting the Parking Brake
If the parking brake does not hold securely, an
adjustment is required.
1. Park the machine on a level surface.
2. Shut off engine and wait for all moving parts to
stop.
3. Check the air pressure in the drive tires. If needed,
adjust to the recommended inflation; refer to
Check Tire Pressures (page 28).
4. Disengage the park brake.
5. Loosen the adjustment nut on the brake cable
under the console.
6. Engage the park brake.
7. Adjust the nut position until 3 1/8 inch (7.9 cm)
from the bottom of link to bottom of spring. See
Figure 13.
Figure 13
1. 3 1/8 inch (7.9 cm)
8. Tighten the cable adjustment nuts.
9. Check the park brake; repeat steps 5 through 8 if
necessary.
Adjusting the Brake Switch
1. Park the machine on a level surface.
2. Shut off engine and wait for all moving parts to
stop.
3. Prior the adjusting the brake switch ensure
the park brake is properly adjusted. See
Adjusting the Parking Brake (page 34).
4. Engage the park brake.
5. Check the distance from the park brake switch
bracket to the hydro brake arm. The distance
should be 1/8 inch (3.2 mm). See Figure 14.
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