TOHATSU NB-1000 Service Manual page 265

Flywheel is under high torque and requires the
use of special tools for removal and installation.
Failure to use the specified tools can result in
injury or damage to the flywheel or coil plate
electrical components.
The force needed to loosen and tighten the
flywheel nut requires flywheel be removed and
installed with engine mounted and secured on an
engine stand.
Use proper precautions when performing tests
with the engine cover removed. Do not wear
loose clothing or jewelry. Keep hair, hands, and
clothing away from the flywheel and other
moving parts.
When repairs are complete, make sure all ignition
and electrical leads are properly routed and
clamped in their original positions and the start-
in-gear prevention system must be tested before
returning engine to customer.
Flywheel
Replacing the exciter coil or coil plate assembly requires the
removal of the flywheel, see Section 4, Flywheel, for the proper
procedure.
FIywheel 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 worn
6
taper after it is removed. Also inspect the magnets for cracks
and chips and make sure they are firmly attached to the flywheel.
1-/ 2-Cylinder
CAUTION
CAUTION
CAUTION
CAUTION
NOTE
ELECTRICAL SYSTEM
T1490
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