Ignition System Description - Suzuki Katana 1100 Service Manual

ELECTRICAL SYSTEM 6-8
IGNITION SYSTEM
DESCRIPTION
The fully transistorized ignition system consists of a signal generator, ignitor, ignition coils, and spark
plugs. The signal generator comprises rotor tip and pick-up coil.
The signal generator is mounted at the right end of the crankshaft. The output of the signal generator
goes to the ignitor unit, where it turns ON and OFF the transistor alternately. As the transistor is turned
ON and OFF, the current passing through the primary windings of the ignition coil is also turned OFF and
ON accordingly, thus it induces the secondary current on the ignition coil secondary windings and produce
the spark between spark plug gaps.
Ignition cut-off circuit is incorporated in the ignitor unit to prevent over-running engine If engine r/min.
reaches 10,900 r/min., this circuit cuts off the ignition primi'lry current for all spark plugs.
CAUTION:
Engine can run over 10.900 r/min. without load. even if the ignition cut-off circuit is effective. and
it may cause engine damage. Do not run the engine without load over 10.900 r/min. <>t anytime.
---------------------.------------- ----I
1-------­
Engine stop
switch
Fuse
IGNITOR
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1
1
Ignitor power
Ignition
LG. coil Ignition coils
r----·
1
1 source circuit
switch
output circuit
1
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4
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C,fcuit
1, 4
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Wave-loom
breaker
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a
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anangement
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circuIt
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2,3
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Spark plugs
,
Signal generator
or
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Battery
I I rotor
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!
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....-----1 [ , . . . . . . . . . . . - ---'
To tachometer - - - - - ' ­
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