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Troubleshooting
Problem Possible Cause Corrective Action
16. Faulty spark plug.
16. Clean, adjust or replace spark plug.
See Check Spark Plug section in
Maintenance for proper spark plug gap.
17. Spark plug wire is not connected.
17. Check the spark plug wire connection.
1. Engine load is excessive 1. Reduce the ground speed.
2. Air cleaner is dirty.
2. Clean or replace the air cleaner element.
3. Oil level in the crankcase is low.
3. Add oil to the crankcase.
4. Cooling ns and air passages for the
engine are plugged.
4. Remove the obstructions from the cooling
ns and air passages.
5. Vent hole in the fuel cap is plugged.
5. Clean or replace the fuel cap.
6. Dirt in fuel lter. 6. Replace the fuel lter.
Engine loses power
7. Dirt, water, or stale fuel is in the fuel
system.
7. Contact an Authorized Service Dealer.
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 by turning knob on the
right hydro control linkage in the direction
that the mower needs to be adjusted to.
Turn the knob in 1/4 turn increments
until the mower tracks correctly.
Mower pulls left or right (with levers fully
forward).
2. Tire pressure in drive tires not correct. 2. Adjust tire pressure in the drive tires.
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.
Machine does not drive.
3. Drive or pump belt is off a pulley. 3. Change the belt.
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.
Uneven cutting height.
7. Tips of adjacent blades are at an uneven
cutting height. Blades tips should be even
within 3/16 inch which is approximately
one blade thickness.
7. Replace blades, spindles and (or) check
for damage to mower deck.
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
pulley.
4. Tighten the appropriate pulley.
5. Engine pulley is damaged. 5. Contact an Authorized Service Dealer.
6. Blade spindle is bent. 6. Contact an Authorized Service Dealer.
Abnormal vibration
7. Belt is damaged. 7. Install new belt.
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