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TROUBLESHOOTING GUIDE
ENGINE DOES NOT START
Does the engine
crank?
Faulty recoil starter.
Fluid in the crankcase.
Internal damage.
NO
Good
compression?
Loose spark plug.
Excess wear on
cylinder, piston, rings.
Tighten and re-test.
NO
YES
Does the tank
contain fresh
fuel of the
proper grade?
Fuel/mixture incorrect,
stale, contaminated.
NO
YES
Is fuel filling the
fuel primer bulb
during priming
operations?
Check for clogged fuel
filter and/or vent.
Clean as required;
re-start.
NO
Is there spark at
the spark plug
wire terminal?
Faulty ignition ground.
NO
YES
YES
Check the
spark plug
If the plug is wet, excess
fuel may be in the
cylinder.
The plug may be fouled
or improperly gapped.
The plug may be
damaged internally or
of the wrong size.
Crank the engine with the
plug removed, replace the
plug, and re-start.
Clean and re-gap the plug to
0.24 inch (0.6 mm); re-start.
Replace the plug with a
Champion CJ8.
YES
What To Check Possible Cause Remedy
Refill with fresh fuel of the correct
mixture (gasoline and ISO EGD
or JASO FC class 2-cycle Engine Oil).
Consult with an authorized
servicing dealer.
Consult with an authorized
servicing dealer.
Consult with an authorized
servicing dealer.
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