23
Maintenance
Troubleshooting Guide
The engine does not start
Diagnosis
Cause
Solution
Does the engine crank?
NO
Faulty recoil starter.
Fluid in the crankcase.
Internal damage.
Consult your dealer
YES
Good compression?
NO
Loose spark plug.
Tighten and re-test.
Excess wear on cylinder, pis-
ton, rings.
Consult your dealer
YES
Does the tank contain fresh fuel of the
proper grade?
NO
Fuel incorrect, stale, or con-
taminated; mixture incorrect.
Refill with fresh, clean unleaded
gasoline with a pump octane of 89
or higher mixed with a 2-cycle air
cooled mixing oil that meets or ex-
ceeds ISO-L-EGD and/or JASO
FC, FD classified oils at 50:1 gas-
oline/oil ratio.
YES
Is fuel visible and moving in the return
line when priming?
NO
Check for clogged fuel filter
and/or vent.
Replace fuel filter or vent as re-
quired. restart.
Priming pump not functioning
properly.
Consult your dealer
YES
Is there spark at the spark plug wire ter-
minal?
NO
The ignition switch is in Stop
position.
Move to the Start position.
Shorted ignition ground.
Faulty ignition unit.
Consult your dealer
YES
Check the spark plug.
NO
If the plug is wet, excess fuel
may be in the cylinder.
Crank the engine with the plug re-
moved, reinstall the plug, and re-
start.
The plug is fouled or improper-
ly gapped.
Clean and regap the plug to 0.6 -
0.7 mm. Restart.
The plug is damaged internally
or of the wrong size.
Replace
