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Fuel filter clogged Clean or replace.
Fuel pipe clogged Clean.
Suction insufficient Make sufficient.
Fuel filter clogged Clean or replace.
Carburetor out of order Disassemble and check.
C.D.I. module defective Remove and replace.
Ignition coil defective Remove and replace.
Wire connection defective Reconnect.
High-tension cord Repair as necessary.
connection defective
Switch is grounded Switch on.
Insulator cracked Replace plug.
Spark gap incorrect Adjust.
Covered with carbon Clean or replace.
Fouled with fuel Clean or replace.
Starting procedures Start correctly.
incorrect
Fuel passage clogged Disassemble and clean.
with dust
Fuel passage locked Remove air.
with air
Fuel leaking from fixing Retighten all screws.
surfaces of carburetor
Air passage, fuel tank Replace or clean.
clogged with dust
Fuel inlet needle valve Clean.
clogged with dust
This is because fuel mixture
is too rich.
Muffler sticky Start the engine several
with fuel times with choke rod fully
open and run at fast idle until
engine does not smoke.
Bearing damaged Disassemble and replace.
Piston and / or cylinder Disassemble and replace.
seized
Crankshaft worn Disassemble and replace.
Crankshaft contacting Disassemble and replace.
crankcase
Fuel is not
reaching
carburetor
There is fuel in the tank
Engine cranks
Engine does not start (or, is difficult to start)
Fuel is reaching carburetor
Table 1
Poor performance of the engine and/or spraying mechanism can normally be prevented by carefully following
the above instructions.
Poor performances can easily be corrected even by a beginner.
When the engine does not function properly check the following three (3) points first.
• Is engine compression adequate?
• Is fuel system in good condition and is enough fuel being supplied?
• Is electrical system in good condition and is spark plug operating normally?
When there is serious trouble with the unit, do not try to repair it yourself but have your distributor or dealer do it
for you. For detailed TROUBLE SHOOTING refer to tables 1 and 2. Locate the problem on the following charts
and repair as necessary.
TROUBLE SHOOTING
Engine does
not crank
Fuel is not
reaching
cylinder
No spark at high
tension cord end
No spark at plug
Fuel does
not keep
running
Carburetor
overflow
Starting procedures
correct
Accelera-
tion and
low speed
function
defective
There is spark at plug
Fuel is reaching cylinder
There is spark at high
tension cord end