1991 Johnson/Evinrude EI Outboards 2.3 thru 8 Service Manual, Page 118Get this manual
Principles of Operation3, 4 Flywheel
rv The sensor coil and ignition moduleOncethe flywheel exflywheel contains permanent magnets which energize LJ the
ceeds minimum cranking RPM, the flywheel's magnetic lines of force pass through the ignition plate components to produce voltage in those circuitsThe flywheel must be in good condition and correctly located to ensure proper ignition timing and sufficient ignition module outputSensor Coil
rv The sensormetal laminationmany windings of wire wrappeda coil consists of LJ around Once the flywheel exceeds
minimum cranking RPM, the flywheel's magnetic lines of force cutting through the sensor coil windings produce approximately voltsThis voltage is supplied to the ignition moduleIgnition Module
[3] The ignition module has four basic functions:
The ignition module has an internal charge coil that produces approximately 200 volts of alternating current The ignition module converts charge coil alternating current to direct current The ignition module stores the direct current in capacitor The ignition module direct the capacitor output to the ignition coil primary windings through series of electronic switches (SCR's)The SCR's select the correct ignition coil primary winding by sensing the polarity of the sensor coil outputStop Circuit