Magneto - TOHATSU NB-1000 Service Manual

Magneto

4 5 6 7
unit (3) and an ignition coil (4). The 1/2 cylinder engines are
comprised of seven basic electrical systems. The following chart
demonstrates not only the differences but the similarities:
2.5A
3.5A
Flywheel Magneto
CD Unit
Condenser
Contact Breaker
Coil Plate
Exciter Coil
Ignition Coil
Pulser Coil
Alternator/Lighting Coil
Pulser coils are not present in either the 3.5B or 8/9.8
models. 9.9D2 / 15D2/ 18E2 and 25C3 / 30A4 also.
The chart demonstrates that the 2.5/3.5 non-CD engine have
different components, all other engines are all basicaIly similar. The
basic units are described as follows:
Flywheel
4
Mounted radially inside the flywheel (1) are a number of high
performance ferrite magnets. As the flywheel rotates, the magnets
pass in front of the coils (exciter / alternator) to produce voltage in
the coils.
1-/ 2-Cylinder
T1981
The electrical system consists of a
flywheel (1), coil plate assembly (2), a CD
2.5A(2)
3.5A(2) 8
3.5B(2) 5 9.8
• • • •
• •
• •
•
• •
• • • •
• • • •
* • *
Opt Opt
*NOTE
ELECTRICAL SYSTEM
9.9
15 25
18 30 40
• •
• • •
• • •
• • •
• • •
• • •
• • •
T1982
T1983
T1984
7-13