| TROUBLESHOOTING (ENGINE) | ||
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| TABLE 7. TROUBLESHOOTING (ENGINE) | ||
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SYMPTOM | POSSIBLE CAUSE | SOLUTION | |
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| Spark plug bridging? | Check gap, insulation or replace spark plug. | |
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Difficult to start, "fuel is available, but | Carbon deposit on spark plug? | Clean or replace spark plug. | |
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no SPARK at spark plug". | Short circuit due to deficient spark plug | Check spark plug insulation, replace if worn. | |
| insulation? | ||
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| Improper spark plug gap? | Set to proper gap. | |
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| ON/OFF switch is shorted? | Check switch wiring, replace switch. | |
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| Ignition coil defective? | Replace ignition coil. | |
Difficult to start, "fuel is available, and |
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Improper spark gap, points dirty? | Set correct spark gap and clean points. | ||
SPARK is present at the spark plug". |
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| Condenser insulation worn or short circuiting? | Replace condenser. | |
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| Spark plug wire broken or short circuiting? | Replace defective spark plug wiring. | |
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| Wrong fuel type? | Flush fuel system, and replace with correct type of fuel. | |
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Difficult to start, "fuel is available, | Water or dust in fuel system? | Flush fuel system. | |
spark is present and compression is |
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normal". | Air cleaner dirty? | Clean or replace air cleaner. | |
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| Choke Open? | Close Choke. | |
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| Suction/exhaust valve stuck or protruded? | ||
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Difficult to start, "fuel is available, | Piston ring and/or cylinder worn? | Replace piston rings and or piston. | |
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spark is present and compression is | Cylinder head and/or spark plug not tightened | Torque cylinder head bolts and spark plug. | |
low". | properly? | ||
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| Head gasket and/or spark plug gasket | Replace head and spark plug gaskets. | |
| damaged? | ||
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| Fuel not available in fuel tank? | Fill with correct type of fuel. | |
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| Fuel filter clogged? | Replace fuel filter. | |
No fuel present at the carburetor. |
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Fuel tank cap breather hole clogged? | Clean or replace fuel tank cap. | ||
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| Air in fuel line? | Bleed fuel line. | |
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