72
TROUBLESHOOTING PROCEDURES
1. THE ENGINE DOES NOT START
Symptom
Possible cause
Remedy
The
compressio
n in the
cylinder is
normal.
The
condition
of the
spark
plug is
normal.
There is a problem within
the fuel system.
The fuel tank is empty.
Fuel filter clogged.
Refuel the fuel tank.
Clean the fuel filter.
The condition
of the fuel
system is
normal.
Fuel
Dirty fuel
Water in fuel
Too much fuel
Incorrect fuel mixture ratio
Change the fuel.
Change the fuel.
Remove the spark plug and
dry it thoroughly.
Mix a fuel mixture in the
correct gasoline/oil ratio.
The
condition
of the fuel
system is
normal.
The spark
given by the
high-voltage
cable is
normal.
Spark
plug
The spark plug is fouled with oil
deposits.
The spark plug insulation is
damaged.
The gap between the electrodes
of the spark plug is too small.
Remove the deposits.
Replace the spark plug.
Adjust the gap between the
electrodes of the spark plug
to 0.6 - 0.7 mm.
The spark given by the
high-voltage cable is not
normal.
The high-voltage cable is loose
or broken.
The spark plug is loose.
Tighten or replace the
high-voltage cable.
Retighten the spark plug.
The
condition of
the fuel
system is
normal.
The
condition
of the
ignition
system is
normal.
Low compression
The piston ring is worn.
The piston ring is broken.
The piston ring is stuck due to
carbon.
The spark plug is loose.
The contact surface of the
cylinder and crankshaft leaks.
Have the piston ring
replaced by an authorized
workshop.
Have the piston ring
replaced by an authorized
workshop.
Have the carbon removed by
an authorized workshop.
Retighten the spark plug.
Have the leakage repaired
by an authorized workshop.
The compression is
normal.
Poor contact between the
high-voltage cable and the spark
plug.
Faulty or short-circuited switch.
Retighten the spark plug
connector.
Have the switch repaired or
replaced by an authorized
workshop.
