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.
12
ENGINE DOES NOT START
Possible Cause
Faulty recoil starter.
NO
Fluid in the crankcase.
Internal damage.
Loose spark plug.
NO
Excess wear on cylinder, piston,
rings.
Fuel incorrect, stale, or
NO
contaminated; mixture incorrect.
NO
Check for clogged fuel filter and/
or vent.
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.
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 50:1 Shindaiwa Premium 2-cycle
mixing oil or with an equivalent high quality
2-cycle mixing oil.
Replace fuel filter or vent as required.
Restart.
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 0.024 in./
0.6mm-0.7mm. Restart.
Replace the spark plug. Check the unit
Specifications page for the proper spark
plug for your unit. Restart.