SYSTEM
CHECKS
In the event of a malfunction
of
the ignition
system:
Check the magneto for defects.
Check
the
high voltage wire for damage or
if
shorted.
Faulty spark plug, caused by moisture, dirt, broken
insulation
or
incorrect plug gap.
CHECK
SPARK
If
difficulty is experienced in starting the engine or
if
engine misses firing, check the strength of the igni-
tion spark Remove the spark plug. With the ignition
cable connected to it, lay the spark plug on a con-
venient metal part
of
the engine
so
that the gap can
be observed as you rotate the crankshaft several
times using the recoil starter.
If
a good strong spark
occurs, the ignition system can be eliminated as the
source
of
trouble.
CHECK FLYWHEEL
Check that the external magnet, mounted
on
the
flywheel is in
good
condition.
CHECK FLYWHEEL
AIR
GAP
Figure
4-3
Use a non-metallic feeler gauge to measure the air
gap between the flywheel and the ignition coil.
Loosen the ignition coil hold down screws
to
adjust
the gap to specifications (see ‘SPECIFICATIONS’).
FEELER
GAUG
COIL
I
Figure
4-3.
4-2
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