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Troubleshooting Guide
Vaporlock.
Valve adjustment.
Engine hot/heat soaked.
Low fuel quality.
Valve clearance too tight.
Valve clearance too loose.
Let cool completely and restart.
Re 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
classi ed oils at 50:1 gasoline/oil ratio.
Consult with an authorized Shindaiwa
servicing dealer. Adjust valves.
What To Check
Possible Cause
Remedy
ENGINE DOES NOT START OR HARD TO START
NO
NO
NO
NO
Does the engine crank?
Good compression?
Does the tank contain fresh
fuel of the proper grade?
Is fuel visible and moving
in the return line when
priming?
Is there spark at the spark
plug wire terminal?
Check the spark plug.
Faulty recoil starter.
Fluid in the crankcase.
Internal damage.
Loose spark plug.
Excess wear on cylinder,
piston, rings.
Fuel incorrect, stale, or
contaminated; mixture incorrect.
Check for clogged fuel lter
and/or vent.
Priming pump not functioning properly.
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.
Consult with an authorized Shindaiwa servicing dealer.
Tighten and re-test.
Consult with an authorized Shindaiwa
servicing dealer.
Re 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
classi ed oils at 50:1 gasoline/oil ratio.
Replace fuel 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 Speci cations
section for the correct plug and gap for your unit. Restart.
Replace the spark plug. Check the Speci cations section
for the correct plug and gap for your unit. Restart.
NO
YES
What To Check Possible Cause Remedy
ENGINE DOES NOT START
YES
YES
YES
YES