TROUBLE SHOOTING
PROBLEM | POSSIBLE FAULT | REMEDY |
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Engine will not turn over | Engine stop lever released. | Operate engine stop lever. |
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| Incorrect oil level. | Check oil level. |
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| Obstruction under deck. | Remove obstruction. |
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| Battery discharged (412 Only) | Charge battery |
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Engine smokes | Excess oil level. | Check oil level. |
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| Air cleaner cartridge oil | Service air cleaner. |
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| soaked or blocked. |
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Engine runs then stops | Fuel starvation. | Fill fuel tank. |
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| Fuel cap vent blocked. | Clean fuel cap vent. |
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Engine will not start | Engine under load. | Raise height of cut. |
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| Fuel starvation. | Fill fuel tank. |
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| Engine cold. | Set throttle to ‘choke’ position. |
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| Incorrect/contaminated fuel. | Drain fuel tank and fill with |
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| correct fuel. |
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| Spark plug lead disconnected. | Connect spark plug lead. |
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| Throttle setting incorrect. | Set throttle to ‘fast’ position. |
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| Engine brake not released. | Operate engine brake lever. |
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| Faulty spark plug. | Clean and adjust gap or replace. |
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| Battery discharged (412 Only) | Charge battery |
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| Wiring fault. | Check wiring. |
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Engine runs rough | Spark plug lead becoming | Connect spark plug lead. |
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| disconnected in use. |
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| Faulty spark plug. | Clean and adjust gap or replace. |
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| Air cleaner blocked. | Service air cleaner. |
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| Incorrect/contaminated fuel. | Drain tank and fill with correct fuel. |
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