TOHATSU 40 Service Manual page 240

Flywheel
Replacing the exciter coil or coil plate assembly requires the
removal of the flywheel, see Section 4, Flywheel, for the proper
procedure.
Flywheel magnets must be of a particular strength in
order to run the ignition system. Weak magnets can
cause low ignition voltage which may affect engine
performance. Flywheels seldom go bad and would
only be replaced as a last resort in solving an ignition
problem.
Carefully inspect flywheel (1) for cracks, chips, and
3 4
worn taper after it is removed. Also inspect the
magnets (2) for cracks and chips and make sure they are firmly
attached to the flywheel.
Exciter Coil
Disconnect negative battery cable from battery
before removing exciter coil.
This procedure assumes exciter coil is available as a
separate replaceable component. Some engine
configurations might require replacement of entire
coil plate assembly. Check current Parts Catalog for
availability.
3-/ 4-Cylinder
NOTE
NOTE
ELECTRICAL SYSTEM
T1490
T1491
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