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9. TROUBLESHOOTING
Troubles
Engine
extinguishes
gradually.
Engine
extinguishes
suddenly.
Engine operation
fluctuates.
Fuel supplying
system
Ignition.
All manuals and user guides at all-guides.com
Causes
Fuel tank switch or carburetor
blocked.
Special two-strike machine oil
added not in given ratio.
Too much deposited carbon
on the electrodes of the spark
plug.
High-voltage winding failed.
Spark plug failed.
High voltage wire and cap
dropped off.
Two-stroke machine oil
absent in the fuel.
Fastening nuts of the
carburetor loosened.
Screws on the air filter cover
loosened, causing the
leakage of air.
Minimum idling revs
adjustment screw loosened.
Fuel tank switch blocked.
Main port of the carburetor
blocked.
Too much impurities in the
fuel.
Too much fuel in the cylinder
because of repeated starting.
Inappropriate mixing ratio of
the fuel.
Spark plug damaged or
deposited with too much
carbon.
Too large or too small
clearance of the spark plug.
High-voltage wire and high
Solutions
Clean fuel tank switch and
carburator.
Add 50:1 gasoline engine
fuel mixture.
Clean and adjust the
clearance of the electrode to
0,7 ~ 0,8 mm.
Replace.
Replace.
Connect again and make
them well contacted.
Replace the fuel, add
several drops of machine oil
to the hole of the spark plug
and rotate the crankshaft.
Examine and tighten.
Check and tighten.
Tighten the minimum idling
rev adjustment screw and
loosen it by 1 – 2 turns.
Remove the float chamber
beneath the fuel tank switch
and clean the switch filter.
Clean.
Clean the fuel tank and
replace with qualified fuel
mixture.
Remove and clear the spark
plug and pull the starter to
exhaust the fuel in the
cylinder.
Prepare the fuel with the
ratio specified.
Clean or replace.
Adjust clearance to 0,7 ~ 0,8
mm.
Connect and make them
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