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Troubleshooting Guide
What To Check
Vaporlock.
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.
20
ENGINE DOES NOT START OR HARD TO START
Possible Cause
Engine hot/heat soaked.
Low fuel quality.
ENGINE DOES NOT START
Possible Cause
Faulty recoil starter.
NO
Fluid in the crankcase.
Internal damage.
NO
Loose spark plug.
Excess wear on cylinder,
piston, rings.
Fuel incorrect, stale, or
NO
contaminated; mixture incorrect.
Check for clogged fuel fi lter
NO
and/or vent.
Priming pump not functioning properly.
NO
The ignition switch is in
"O" (OFF) 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.
Remedy
Let cool completely and restart.
Refi ll with fresh, clean unleaded gasoline with a pump octane
of 89 or higher mixed with an air cooled engine oil that
meets or exceeds ISO-L-EGD and/or JASO FD classifi ed oils
at 50:1 gasoline/oil ratio.
Remedy
Consult with an authorized Shindaiwa servicing dealer.
Tighten and re-test.
Consult with an authorized Shindaiwa
servicing dealer.
Refi ll with fresh, clean unleaded gasoline with a pump octane
of 89 or higher mixed with an air cooled engine oil that
meets or exceeds ISO-L-EGD and/or JASO FD classifi ed oils
at 50:1 gasoline/oil ratio.
Replace fuel fi lter or vent as required.
Re-start.
Consult with an authorized Shindaiwa
servicing dealer.
Move switch to "I" (ON) position
and re-start.
Consult with an authorized Shindaiwa
servicing dealer.
See "Starting a Flooded Engine"
Clean and gap the spark plug. Check the Specifi cations
section for the correct plug and gap for your unit. Restart.
Replace the spark plug. Check the Specifi cations section for
the correct plug and gap for your unit. Restart.
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