7.3
Section 7
Electrical System and Components
7
Electronic Ignition System
CDI Module Operation
ȱȱĚ¢ȱȱȱȱȱȱȱȱ
ȱǰȱȱȱęȱȱȱ
ȱȱȱǯȱȱȱȱȱęȱ¢ȱȱ
ȱȱȱȱȱȱȬȱǯȱ
ȱȱȱȱȱǰȱȱȱȱ¢ȱ
ȱȱȱȱ¢ȱȱĚ¢ȱȱȱ
ȱȱȱǰȱȱ¢ȱȱ
the charged capacitor to the primary coil of the
ǯȱȱȱȱȱ¢ǰȱȱ
ȱȱȱȱ¢ȱȱȱȱ
ȱȱȱȱȱ¢ȱȱȱȱ
ǯȱȱȱȱȱȱȱȱȱȱ
ȱǰȱȱȱȱȱȱȱȱȱ
ȱȱȱȱȱȱǯ
ȱ¢ȱȱȱȱȱDZ
ȱ Ȋȱ ǰȱ¢ȱĜ¡ȱȱĚ¢ǯ
ȱ Ȋȱ ȱȱȱȱǯ
ȱ Ȋȱ ǰȱȱȱȱȱ
ȱȱȱǯȱ
ȱ Ȋȱ ȱȱǻȱ¢ȱǼDzȱȱȱȱ
stop engine.
ȱ Ȋȱ ȱǰȱȱȱȱȱǯ
Figure 7-2. Capacitive Discharge Ignition System (CDI).
ȱȱȱȱȱȱȱȱǯȱȱȱȱȱ¢ǰȱȱ¢ȱ
ȱȱ¢ȱȱȱȱȱȱȱȱȱȱĚ¢ȱȱȱȱǯȱ
ȱ¢ȱȱȱȱȱȱȱǯȱȱȱ¢ȱȱȱȱȱȱȱȱ
ȱǯȱȱȱȱȱȱȱȱ¢ȱȱȱȱȱȱȱȱȱȱ
ȱȱ¢ȱǰȱȱȱǯȱȱȱȱȱȱȱȱȱȱȱ
ȂȱȱȱȱȱȬȱ¡ȱȱȱȱǯȱȱ¢ȱȱȱȱȱȱ
ȱȱǰȱȱȱȱǻǼǰȱȱȱȱȱǻǼǯȱȱȱŝȬŘȱȱ
ŝȬřǯ
Kill Switch or Off
Position of Key Switch
Air Gap
0.254 mm
(0.010 in.)
Flywheel
Magnets
Ignition Module
Spark Plug
Kill Terminal
Spark Plug
Terminal (C)
Spark Plug Boot
Ignition Module
(Enlarged View)
Lamination (A)