Troubleshooting Guide
ENGINE DOES NOT START
What To Check
Does the engine crank?
YES
Possible Cause
NO | Faulty recoil starter. | |
Fluid in the crankcase. | ||
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| Internal damage. |
Remedy
Consult with an authorized servicing dealer.
NO
Loose spark plug.
Tighten and
Good compression?
Excess wear on cylinder, piston, rings.
Consult with an authorized servicing dealer.
YES
| NO | Fuel incorrect, stale, or contaminated; | |
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Does the tank contain | mixture incorrect. | ||
fresh fuel of the proper |
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grade? |
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Refill with fresh, clean unleaded gasoline with a pump octane of 87 or higher mixed with a
YES
Is fuel visible and moving in the return line when priming?
YES
NO
Check for clogged fuel filter and/or vent.
Primer pump functioning incorrectly.
Replace fuel filter or vent as required. Restart.
Consult with an authorized servicing dealer.
Is there spark at the spark plug wire terminal?
YES
Check the spark plug.
The ignition switch is in “O” (OFF) NO position.
Shorted ignition ground. Faulty ignition unit.
If the plug is wet, excess fuel may be in the cylinder.
The plug is fouled or improperly gapped.
The plug is damaged internally or of the wrong size.
Move switch to “I” (ON) position and restart.
Consult with an authorized servicing dealer.
Crank the engine with the plug removed, reinstall the plug, and restart.
Clean and regap the plug. Check the “Specifications” section for the correct plug electrode gap. Restart.
Replace the spark plug. Check the “Specifications” section for the correct plug for your unit. Restart.
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