1989 Johnson Evinrude "CE" Colt/Junior thru 8 Service Manual, P/N 507753, Page 127Get this manual
Principles of OperationUltraExcel Flywheel L!J the sensor coil and ignition moduleOnce the flywheel exceeds 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 metal lamination 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
f1l The flywheel contains permanent magnets which energize
f1l The sensor coil consists of many windings of wire wrapped
L!J around
ignition module