Cutting blade(s) is/are bent or unbalanced.

Troubleshooting

Problem

 

Possible Cause

 

Corrective Action

 

 

 

 

 

Mower pulls left or right (with levers fully

1.

Idler arm pulleys and drive sheaves are

1.

Remove mud and/or grass buildup.

forward).

 

dirty.

 

 

 

2.

Wheel drive belt pulley scrapers

2.

Correct adjustment.

 

 

adjustment is not correct

 

 

 

3.

Idler pivot arms cannot pivot freely

3.

Lubricate ilder pivots.

 

4.

Drive belts are worn.

4.

Replace drive belts as a set. (Do Not mix

 

 

 

 

a new belt with a worn drive belt.)

 

5.

Drive linkage adjustment is not correct.

5.

Correct adjustment.

 

6.

Tire pressure in drive tires not correct.

6.

Adjust tire pressure in the drive tires.

 

 

 

 

 

Machine does not drive.

1.

Transmission drive belt is worn, loose or

1.

Change the belt.

 

 

broken.

 

 

 

2.

Transmission drive belt is off a pulley.

2.

Change the belt.

 

 

 

 

 

Uneven cutting height.

1.

Blade(s) not sharp.

1.

Sharpen the blade(s).

 

2.

Cutting blade(s) is/are bent.

2.

Install new cutting blade(s).

 

3.

Mower deck is not level.

3.

Level mower deck from side-to-side and

 

 

 

 

front-to-rear.

 

4.

Underside of mower is dirty.

4.

Clean the underside of the mower.

 

5.

Tire pressure in drive tires not correct.

5.

Adjust tire pressure in the drive tires.

 

6.

Blade spindle bent.

6.

Contact an Authorized Service Dealer.

 

7.

Tips of adjacent blades are at an uneven

7.

Replace blades, spindles and (or) check

 

 

cutting height. Blades tips should be even

 

for damage to mower deck.

 

 

within 3/16 inch which is approximately

 

 

 

 

one blade thickness.

 

 

 

8.

Caster mounting brackets are loose.

8.

Tighten hardware.

 

 

 

 

 

Abnormal vibration.

1.

Cutting blade(s) is/are bent or unbalanced.

1.

Install new cutting blade(s).

 

2.

Blade mounting bolt is loose.

2.

Tighten the blade mounting bolt.

 

3.

Engine mounting bolts are loose.

3.

Tighten the engine mounting bolts.

 

4.

Loose engine pulley, idler pulley, or blade

4.

Tighten the appropriate pulley.

 

 

pulley.

 

 

 

5.

Engine pulley is damaged.

5.

Contact an Authorized Service Dealer.

 

6.

Blade spindle is bent.

6.

Contact an Authorized Service Dealer.

 

7.

Belt is damaged.

7.

Install new belt.

 

 

 

 

 

Blades do not rotate.

1.

Deck belt is worn, loose or broken.

1.

Install new deck belt.

 

2.

Deck belt is off pulley.

2.

Install deck pulley and check the idler

 

 

 

 

pulley, idler arm and spring for correct

 

 

 

 

position and function.

 

 

 

 

 

Blades do not stop when disengaged.

1.

Blade brake is not adjusted properly.

1.

Adjust blade brake.

 

2.

Belt guide is not properly set

2.

Adjust belt guide to proper position.

 

3.

PTO engagement is not properly set.

3.

Check the PTO engagement position.

 

 

 

 

 

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Exmark 4500-352 Troubleshooting, Problem, Possible Cause, Corrective Action, Cutting blades is/are bent or unbalanced