Troubleshooting
Problem |
| Possible Causes |
| Probable Solutions |
Engine misfires | 1. Spark plug wire loose. | 1. | Check wire connections. | |
| 2. | Incorrect spark plug gap or | 2. | |
|
| 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 |
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|
|
| unleaded 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 | 1. | Low oil shutdown. | 1. | Fill engine oil to proper level. |
suddenly |
|
|
| 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 |
|
| low quality gasoline. |
| unleaded gasoline. |
| 3. | Defective fuel tank cap creating | 3. | Test/replace fuel tank cap. |
|
| vacuum, preventing proper fuel |
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|
|
| 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 |
|
| buildup, worn engine, or other |
| and service engine. |
|
| 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 |
|
| engine. |
| and service engine. |
Follow all safety precautions whenever diagnosing or servicing the equipment or engine.
SKU 97005 | For technical questions, please call | Page 19 |
