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| STOW | — TROUBLESHOOTING (ENGINE) | ||
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| TABLE 7. ENGINE TROUBLESHOOTING |
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| SYMPTOM | POSSIBLE PROBLEM |
| SOLUTION |
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| Difficult to start |
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| Ignition plug being bridge? |
| Check ignition system. |
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| Fuel is available but spark plug | Carbon deposit at ignition? |
| Clean or replace ignition. |
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| will not ignite. (Power available | Short circuit due to defective |
| Replace insulators. |
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| at high tension cable). |
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| insulators? |
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| Improper spark gap? |
| Set spark plug gap to the correct gap. |
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| Fuel is available but spark plug | Short circuit at stop switch? |
| Check stop switch circuit. Replace stop switch if defective. |
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| will not ignite. (Power NOT |
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| available at high tension cable). | Ignition coil defective? |
| Replace ignition coil. |
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| Muffler clogged with carbon |
| Clean or replace muffler. |
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| deposits? |
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| Mixed fuel quality is |
| Check fuel to oil mixture. |
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| Fuel is available and spark plug | inadequate? |
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| ignites (compression normal). |
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| Fuel in use inadequate (water, |
| Flush fuel sytem and replace with fresh fuel. |
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| dust)? |
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| Air Cleaner clogged? |
| Clean or replace air cleaner. |
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| Defective cylinder head gasket? |
| Tighten cylinder head bolts or replace head gasket. |
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| Fuel is available and spark plug |
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| Cylinder worn? |
| Replace cylinder. |
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| ignites (compression low ). |
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| Spark plug loose? |
| Tighen spark plug. |
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| Operation not satisfactory |
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| Air cleaner clogged? |
| Clean or replace air cleaner. |
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| Not enough power available | Air in fuel line? |
| Bleed (remove air) from fuel line. |
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| (compression normal, no miss- | Fuel level in carbureator float |
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| firing). |
| Adjust carbureator float |
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| chamber improper? |
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| Carbon deposits in cylinder? |
| Clean or replace cylinder |
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| Ignition coil defective? |
| Flush fuel sytem and replace with fresh fuel. |
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| Not enough power available |
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| Ignition plug often shorts? |
| Replace ignition wires, clean ignition. |
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| (compression normal, miss- |
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| firing). | Fuel in use inadequate (water, |
| Flush fuel sytem and replace with fresh fuel. |
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| dust)? |
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| Excessive carbon depostion in |
| Clean or replace crankcase. |
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| combustion chamber? |
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| Engine overheats. | Exhaust or muffler clogged with |
| Clean or replace muffler. |
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| carbon. |
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| Spark plug heat value incorrect? |
| Replace spark plug with correct type spark plug. |
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PAGE 26
