1993 Johnson Evinrude "ET" 9.9 thru 30 Service Manual, P/N 508282, Page 115Get this manual
Principles of Operation Flywheel
which energize charge coil, sensor coil, and alternator statorOnce the flywheel exceeds minimum cranking RPM, the flywheel's magnetic lines of force pass through the ignition plate components to produce voltage in those circuitsr:;l The flywheel contains permanent magnets
The flywheel must be in good condition and correctly located to ensure proper ignition timing and sufficient charge coil outputCharge Coil
t=J around metal laminationOnce the flywheel exceeds a
minimum cranking RPM, the flywheel's magnetic lines of force pass through the charge coil windings to produce approximately 300 volts of alternating currentThis voltage is supplied to the power pack to operate the systemSensor Coil