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| troubleshooting | |
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| Troubleshooting (engine) - continued |
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Symptom | possible problem |
| Solution |
| Air cleaner dirty? |
| Clean or replace air cleaner. |
Weak in power, compression is proper and | Improper level in carburetor? |
| Check fl oat adjustment, rebuild carburetor. |
does not misfi re. | Defective spark plug? |
| Clean or replace spark plug. |
| Improper spark plug? |
| Set to proper gap. |
| Water in fuel system? |
| Flush fuel system and replace with correct |
Weak in power, compression is proper but |
| type of fuel. | |
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misfi res. | Dirty spark plug? |
| Clean or replace spark plug. |
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| Ignition coil defective? |
| Replace ignition coil. |
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| Spark plug heat value incorrect? |
| Replace with correct type of spark plug. |
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| Wrong type of fuel? |
| Replace with correct type of fuel. |
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Engine overheats. | Cooling fi ns dirty? |
| Clean cooling fi ns. |
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Intake air restricted? |
| Clear intake of dirt and debris. Replace air | |
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| cleaner elements as necessary. | |
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| Oil level too low or too high? |
| Adjust oil to proper level. |
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| Governor adjusted incorrectly? |
| Adjust governor. |
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Rotational speed fl uctuates. | Governor spring defective? |
| Replace governor spring. |
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| Fuel fl ow restricted? |
| Check entire fuel system for leaks or clogs. |
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Recoil starter malfunctions. (if applicable) | Recoil mechanism clogged with dust and dirt? |
| Clean recoil assembly with soap and water. |
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Spiral spring loose? |
| Replace spiral spring. | |
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| Loose, damaged wiring? |
| Ensure tight, clean connections on battery |
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| and starter. | |
Starter malfunctions. |
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Battery insuffi ciently charged? |
| Recharge or replace battery. | |
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| Starter damaged or internally shorted? |
| Replace starter. |
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| Check and clean valves. Check muffl er and | |
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| replace if necessary. | |
Burns too much fuel. |
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Wrong spark plug? |
| Replace spark plug with manufacturer's | |
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| suggested type. | |
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Exhaust color is continuously "white". | Lubricating oil is wrong viscosity? |
| Replace lubricating oil with correct viscosity. |
Worn rings? |
| Replace rings. | |
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| Air cleaner clogged? |
| Clean or replace air cleaner. |
| Choke valve set to incorrect position? |
| Adjust choke valve to correct position. |
Exhaust color is continuously "black". | Carburetor defective, seal on carburetor |
| Replace carburetor or seal. |
broken? |
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| Poor carburetor adjustment, engine runs too |
| Adjust carburetor. |
| rich? |
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| ON/OFF device not activated ON? |
| Turn on ON/OFF device. |
Will not start, no power with key "ON". (if | Battery disconnected or discharged? |
| Check cable connections. Charge or replace |
applicable) |
| battery | |
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| Ignition switch/wiring defective? |
| Replace ignition switch. Check wiring. |
b46s90
