Troubleshooting

 

 

 

 

 

Problem

 

Possible Cause

 

Corrective Action

 

 

 

 

 

Engine overheats.

1.

Engine load is excessive.

1.

Reduce the ground speed.

 

2.

Oil level in the crankcase is low.

2.

Add oil to the crankcase.

 

3.

Cooling fins and air passages for the

3.

Remove the obstructions from the cooling

 

 

engine are plugged.

 

fins and air passages.

 

 

 

 

 

Mower pulls left or right (with levers fully

1.

Tracking needs adjustment.

1.

Adjust the tracking.

forward).

2.

Tire pressure in drive tires not correct.

2.

Adjust tire pressure in the drive tires.

 

 

3.

Reverse indicator and speed control

3.

Adjust the reverse indicator and the speed

 

 

linkage need adjustment.

 

control linkage.

 

 

 

 

 

Machine does not drive.

1.

Bypass valve is not closed tight.

1.

Tighten the bypass valve.

 

2.

Drive or pump belt is worn, loose or

2.

Change the belt.

 

 

broken.

 

 

 

3.

Drive or pump belt is off a pulley.

3.

Change the belt.

 

4.

Broken or missing idler spring.

4.

Replace the spring.

 

5.

Hydraulic fluid level is low or too hot.

5.

Add hydraulic fluid to reservoir or let it

 

 

 

 

cool down.

 

 

 

 

 

Abnormal vibration.

1.

Engine mounting bolts are loose.

1.

Tighten the engine mounting bolts.

 

2.

Loose engine pulley, idler pulley, or blade

2.

Tighten the appropriate pulley.

 

 

pulley.

 

 

 

3.

Engine pulley is damaged.

3.

Contact an Authorized Service Dealer.

 

4.

Belt is damaged.

4.

Install new belt.

 

 

 

 

 

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Exmark 4500-367 manual Troubleshooting