1994 Johnson/Evinrude "ER" 2 thru 8 outboards Service Manual, Page 123Get this manual
Principles of Operation3, 4 Flywheel
rv The sensor coil and ignition moduleOncethe flywheel exflywheel contains permanent magnets which energize 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 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 The ignition module
has four
basic functions: