Troubleshooting
Problem |
| Possible Causes |
| Probable Solutions |
Engine will not | Fuel Related: | Fuel Related: | ||
start | 1. | No fuel in tank or fuel valve closed. | 1. | Fill fuel tank and open fuel valve. |
| 2. | Choke not in start position, | 2. | Move choke to start position if |
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| especially with cold engine. |
| engine is cold. |
| 3. | Low quality or deteriorated, old | 3. | Use only fresh 89+ octane unleaded |
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| gasoline. |
| gasoline. |
| 4. | Carburetor not primed. | 4. | Prime carburetor by pressing |
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| priming bulb specified number of |
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| times (if equipped). |
| 5. | Dirty fuel passageways blocking fuel | 5. | Clean out passageways using |
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| flow. |
| fuel additive. Heavy deposits may |
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|
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| require further cleaning. |
| 6. | Carburetor needle stuck. Fuel can | 6. | Gently tap side of carburetor float |
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| be smelled in the air. |
| chamber with screwdriver handle. |
| 7. | Too much fuel in chamber. This can | 7. | Turn choke to run position and close |
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| be caused by the carburetor needle |
| fuel valve. Remove spark plug and |
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| sticking. |
| pull the start handle several times to |
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| air out the chamber. Reinstall spark |
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| plug and set choke to start position. |
| Ignition (spark) Related: | Ignition (spark) Related: | ||
| 1. | Spark plug wire not connected | 1. | Connect spark plug wire properly. |
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| securely. |
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| 2. | Spark plug electrode wet or dirty. | 2. | Clean spark plug. |
| 3. | Incorrect spark plug gap. | 3. | Correct spark plug gap. |
| 4. | Spark plug wire or spark plug | 4. | Replace spark plug wire and/or |
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| broken. |
| spark plug. |
| 5. | Incorrect spark timing or faulty | 5. | Have qualified technician diagnose/ |
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| ignition system. |
| repair ignition system. |
| Compression Related: | Compression Related: | ||
| 1. | Cylinder not lubricated. Problem | 1. | Pour tablespoon of oil into spark |
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| after long storage periods. |
| plug hole. Crank engine a few times |
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|
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| and try to start again. |
| 2. | Loose or broken spark plug. | 2. | Tighten spark plug. If that does not |
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| (Hissing noise will occur when trying |
| work, replace spark plug. If problem |
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| to start.) |
| persists, may have head gasket |
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| problem, see #3. |
| 3. | Loose cylinder head or damaged | 3. | Tighten head. If that does not |
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| head gasket. (Hissing noise will |
| remedy problem, replace head |
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| occur when trying to start.) |
| gasket. |
| 4. | Engine valves or tappets | 4. | Adjust valve clearance. If that does |
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| misadjusted or stuck. |
| not work, clean or replace valves/ |
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|
|
| tappets. |
Follow all safety precautions whenever diagnosing or servicing the equipment or engine.
SKU 65761 | For technical questions, please call | Page 19 |
