Exmark ARX481CKA30000 Operator's Manual page 39

Problem
Engine overheats.
Machine pulls left or right (with levers fully
forward).
Machine does not drive.
Abnormal vibration.
Tines do not raise.
Tines do not engage the ground.
Possible Cause
1. Engine load is excessive.
2. Oil level in the crankcase is low.
3. Cooling fins and air passages for the
engine are plugged.
1. Tire pressure in drive tires not correct.
2. Tracking needs adjustment.
1. Drive or pump belt is worn, loose or
broken.
2. Drive or pump belt is off a pulley.
1. Tine(s) is/are bent.
2. Tine mounting bolt is loose.
3. Engine mounting bolts are loose.
4. Loose engine pulley or idler pulley.
5. Engine pulley is damaged.
6. Belt is damaged.
7. Chains are not properly tensioned.
1. Auxiliary pump belt problem.
2. Tine down pressure setting is too low.
3. Short in harness.
4. Auxiliary reservoir is low on oil.
1. Tine down pressure setting is too low.
2. Harness/switch is damaged.
3. Auxiliary reservoir is low on oil.
4. Cylinder stop is in place.
39
Troubleshooting
Corrective Action
1. Reduce the ground speed or aeration
depth.
2. Add oil to the crankcase.
3. Remove the obstructions from the
cooling fins and air passages.
1. Adjust tire pressure in the drive tires.
2. See Motion Control Linkage
Adjustment in Adjustments section.
1. Change the belt.
2. Change the belt.
1. Install new tine(s).
2. Tighten the tine mounting bolt.
3. Tighten the engine mounting bolts.
4. Tighten the appropriate pulley.
5. Contact an Authorized Service Dealer.
6. Install new belt.
7. See Jackshaft Drive Chain Tension
Adjustment, Drive Wheel Chain
Tension Adjustment, and Tine Drive
Chain Adjustment in Adjustments
section.
1. Tension or replace belt.
2. Increase down pressure.
3. Contact an Authorized Service Dealer.
4. Add oil to reservoir.
1. Increase tine down pressure.
2. Contact an Authorized Service Dealer.
3. Add oil to reservoir.
4. Remove cylinder stop, clevis pin and hair
pin.