Troubleshooting
Problem |
| Possible Causes |
| Probable Solutions |
Engine misfires | 1. Spark plug wire loose. | 1. | Check wire connections. | |
| 2. | Incorrect spark plug gap or | 2. | |
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| damaged spark plug. |
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| 3. | Defective spark plug wire. | 3. | Replace spark plug wire. |
| 4. | Old or low quality gasoline. | 4. | Use only fresh 89+ octane unleaded |
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| gasoline. |
| 5. | Incorrect compression. | 5. | Diagnose and repair compression. |
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| (Use Engine will not start: |
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| Compression Related |
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| section.) |
Engine stops suddenly | 1. | Low oil shutdown. | 1. | Fill engine oil to proper level. |
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| Check engine oil before EVERY |
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| use. |
| 2. | Fuel tank empty or full of impure or | 2. | Fill fuel tank with fresh 89+ octane |
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| low quality gasoline. |
| unleaded gasoline. |
| 3. | Defective fuel tank cap creating | 3. | Test/replace fuel tank cap. |
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| vacuum, preventing proper fuel flow. |
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| 4. | Faulty magneto. | 4. | Have qualified technician service |
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| magneto. |
Engine knocks | 1. | Old or low quality gasoline. | 1. | Fill fuel tank with fresh 89+ octane |
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| unleaded gasoline. |
| 2. | Engine overloaded. | 2. | Do not exceed equipment’s load |
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| rating. |
| 3. | Incorrect spark timing, deposit | 3. | Have qualified technician diagnose |
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| buildup, worn engine, or other |
| and service engine. |
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| mechanical problems. |
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Engine backfires | 1. | Impure or low quality gasoline. | 1. | Fill fuel tank with fresh 89+ octane |
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| unleaded gasoline. |
| 2. | Engine too cold. | 2. | Use cold weather fuel and oil |
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| additives to prevent backfiring. |
| 3. | Intake valve stuck or overheated | 3. | Have qualified technician diagnose |
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| engine. |
| and service engine. |
Does not produce high | 1. Diameter of water supply hose too | 1. | Replace hose with a ¾ inch hose. | |
pressure |
| small |
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| 2. | Water supply is restricted. | 2. | Check water supply hose for kinks, |
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| leaks, or blockage. |
| 3. | Not enough water supply. | 3. | Open water faucet all the way. |
Follow all safety precautions whenever diagnosing or servicing the equipment or engine.
Page 22 | For technical questions, please call | SKU 67596 |
