11. TROUBLESHOOTING
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11.1 TROUBLESHOOTING
Problem
Probable cause
Suggested remedy
1. Engine will not start.
Engine stop switch activated. Slide stop switch back to on
position
Little or no fuel.
Mix up a fresh batch of 25:1
[fuel with 2-stroke oil] and
refill.
Stagnant fuel (fuel has been
stored too long).
Drain fuel tank. Mix up a
fresh batch of 25:1 [fuel with
2-stroke oil] and refill.
Spark plug electrode fouled
or the gap is incorrectly set.
Remove and service/replace
spark plug
Spark plug H.T. lead not
properly connected.
Push H.T. lead on firmly
and make sure the engine
housing is not preventing a
good connection.
Choke set incorrectly for the
starting conditions.
Move the choke to the other
setting and try again.
Air filter clogged.
Clean/replace air filter.
Engine flooded with fuel
(the engine has been over
primed]
Remove spark plug and
dry the electrode of fuel.
Pull the start handle 2 or 3
times without the spark plug
fitted. Wait a moment before
refitting the spark plug and
trying again.
Fuel filter clogged
Replace fuel filter [in fuel
tank].
2. Engine will not restart
after refuelling.
No fuel in the lines.
If the engine was run until
starved of fuel, repriming
may be necessary to purge
any air from the fuel supply
line.
3. Engine runs roughly.
Choke set incorrectly.
Adjust choke.
Service due.
Clean/replace air filter and
spark plug.
Stagnant fuel (fuel has been
stored too long).
Drain fuel tank. Mix up a
fresh batch of 25:1 [fuel with
2-stroke oil] and refill.
4. Heavy blue smoke from
exhaust.
The fuel, oil mix is incorrect.
Drain fuel tank. Mix up a
fresh batch of 25:1 [fuel with
2-stroke oil] and refill.