Troubleshooting Guide - Shindaiwa EB8510 Owner's/Operator's Manual

Troubleshooting Guide

What To Check
Does the engine crank?
YES
Good compression?
YES
Does the tank contain fresh fuel
of the proper grade?
YES
Is fuel visible and moving in the
return line when priming?
YES
Is there spark at the spark plug
wire terminal?
YES
Check the spark plug.
ENGINE DOES NOT START
Possible Cause
NO Faulty recoil starter.
Fluid in the crankcase.
Internal damage.
NO
Loose spark plug.
Excess wear on cylinder, piston, rings.
NO
Fuel incorrect, stale, or contaminated;
mixture incorrect.
Check for clogged fuel filter and/or vent.
NO
Priming pump not functioning properly.
The ignition switch is in "O" (OFF) position.
NO
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.
Remedy
Consult with an authorized servicing dealer.
Tighten and re-test.
Consult with an authorized servicing dealer.
Refill with fresh, clean unleaded gasoline with a pump
octane of 87 or higher mixed with a 2-cycle air cooled
mixing oil that meets or exceeds ISO-L-EGD and/or
JASO FC classified oils at 50:1 gasoline/oil ratio.
Replace fuel filter or vent as required. Restart.
Consult with an authorized servicing dealer.
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 to 0.6 mm. (0.024 inch).
Restart.
Replace the plug with a NGK CMR5H or equivalent
resistor type spark plug of the correct heat range. Set
spark plug electrode gap to 0.6mm (0.024 inch).
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