2006 Johnson SD 30 HP 4 Stroke Outboards Service Manual, PN 5006592, Page 72Get this manual
ENGINE CONTROL
COMPONENTS
Emergency Stop Switch
The emergency stop switch is connected to the power pack through the engine wiring harnessWhen activated, this switch directs the power pack output to ground, stopping the ignition system
Ignition Coil
The ignition coil consists of two windings of wire wrapped around compacted ferrite coreThe coil has primary and secondary terminal connections and ground plateThrough mutual induction, the ignition coil transforms the ignition module output to as much as 40,000 to fire the spark plugsThere is one ignition coil per cylinder2