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