Exmark 4500-497 Lawn Mower User Manual


 
Troubleshooting
Problem Possible Cause Corrective Action
1. Engine load is excessive 1. Reduce the ground speed.
2. Oil level in the crankcase is low.
2. Add oil to the crankcase.
Engine overheats
3. Cooling ns and air passages for the
engine are plugged.
3. Remove the obstructions from the cooling
ns and air passages.
1. Tracking needs adjustment 1. Adjust the tracking.
2. Tire pressure in drive tires not correct. 2. Adjust tire pressure in the drive tires.
Mower pulls left or right (with levers fully
forward)
3. Reverse indicator and motion control
linkage need adjustment.
3. Adjust the reverse indicator and the
motion control linkage.
1. Bypass valve is not closed tight. 1. Tighten the bypass valve.
2. Drive or pump belt is worn, loose or
broken.
2. Change the belt.
3. Drive or pump belt is off a pulley. 3. Change the belt.
4. Broken or missing idler spring.
4. Replace the spring.
Machine does not drive
5. Hydraulic uid level is low or too hot. 5. Add hydraulic uid to reservoir or let it
cool down.
1. Engine mounting bolts are loose. 1. Tighten the engine mounting bolts.
2. Loose engine pulley, idler pulley, or blade
pulley.
2. Tighten the appropriate pulley.
Abnormal vibration
3. Engine pulley is damaged. 3. Contact an Authorized Service Dealer.
1. Fuse is blown.
1. Replace fuse. Check coil resistance,
battery charge, charging system, and
wiring connections and replace if
necessary.
2. Low voltage supply at the clutch.
2. Check coil resistance, battery charge,
charging system, and wiring connections
and replace if necessary.
3. Damaged coil.
3. Replace clutch.
4. Inadequate current supply. 4. Repair or replace clutch lead wire or
electrical system. Clean connector
contacts.
Clutch will not engage.
5. Rotor/armature airgap is too large.
5. Remove shim or replace clutch.
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