6.
MAGNETO
6-1
MAGNETO
The spark for ignition is furnished by the magneto assembly. The magneto consists
of
the flywheel and the
ignition coil of which flywheel is mounted on crankshaft and ignition coil is mounted in crankcase directly.
6-2
MAGNETO TROUBLE SHOOTING
When the engine does not start or starts with difficulty, or when its operation is unstable, the following tests
will clarify if they are caused by a defect
in
the magneto.
1)
Check ignition cable for possible corrosion, broken, worm insulator or lose connection.
2)
Check the sparking as described later in this section.
3)
If no spark takes place, replace ignition coil.
*SPARK
TESTING
Remove the spark plug from the cylinder head and place it on the cylinder head, with the ignition cable
connected to it.
Crank the engine several times
by
recoil starter and observe the spark
in
the spark gap
of
spark plug.
If
the spark
is
strong, the ignition system can be eliminated as the source
of
trouble. (Remove the primary
wire from the connector.)
If the spark
is
weak or there
is
no spark at all, repeat the checks.
The
correct electrode gap
is
0.6
-
0.7
mm. (Refer to section
“14.
CHECKS and CORRECTIONS.”)
Flywheel
I
Fig.
36
/-
/“
-
24
-
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