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| troubleshooting |
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| Table 6. Engine Troubleshooting | |
| Symptom | Possible Cause | Solution |
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| Spark plug bridging? | Check gap, insulation or replace spark plug. |
| Difficult to start. Fuel is | Carbon deposit on spark plug? | Clean or replace spark plug. |
| available but no SPARK | Short circuit due to deficient spark plug | Check spark plug insulation. Replace if |
| at spark plug. | insulation? | worn. |
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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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| Difficult to start. Fuel is | Ignition coil defective? | Replace ignition coil. |
| available and SPARK | Improper spark gap, points dirty? | Set correct spark gap and clean points. |
| is present at the spark |
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| Condenser insulation worn or short | Replace condenser. | |
| plug. | ||
| circuiting? | ||
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| Spark plug wire broken or short circuiting? | Replace defective spark plug wiring. |
| Difficult to start. Fuel | Wrong fuel type? | Flush fuel system and replace with correct |
| is available, SPARK is | type of fuel. | |
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| present at the spark |
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| Water or dust in fuel system? | Flush fuel system. | |
| plug and compression | ||
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| Air cleaner dirty? | Clean or replace air cleaner. | |
| is normal. | ||
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| Suction/exhaust valve stuck or protruded? | Reseat valves. |
| Difficult to start. Fuel |
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| Piston ring and/or cylinder worn? | Replace piston rings or piston. | |
| is available, SPARK is | ||
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| Cylinder head and/or spark plug not |
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| present at the spark | Torque cylinder head bolts and spark plug. | |
| tightened properly? | ||
| plug and compression |
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| is low. | Head gasket and/or spark plug gasket | Replace head and spark plug gaskets. |
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| damaged? | |
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| Fuel not available in fuel tank? | Fill with correct type of fuel. |
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| Fuel cock does not open properly? | Apply lubricant to loosen fuel cock lever. |
| No fuel present at | Replace if necessary. | |
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| carburetor. | Fuel filter clogged? | Replace fuel filter. |
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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 |
| Weak in power. | Air cleaner dirty? | Clean or replace air cleaner. |
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| Compression is proper | Improper level in carburetor? | Check float adjustment. Rebuild carburetor. |
| and does not misfire. |
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| Defective spark plug? | Clean or replace spark plug. | |
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gac2.2H 60 hz GENERATOR • operation and parts manual — rev. #1 (03/31/10) — page 27