1992 Johnson/Evinrude EN 2.3 thru 8 outboards Service Manual, Page 106Get this manual
Principles of OperationUFI Flywheel
r:;l The flywheel contains permanent magnets which energize LJ the charge coil, ignition module, 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 circuits
The flywheel must be in good condition and correctly located to ensure proper ignition timing and sufficient charge coil outputCharge Coil
f21 The charge coil
of many windings of wire wrapped around metal lammatlonOnce the flywheel exceeds minimum cranking RPM, the flywheel's magnetic lines of force pass through the charge coil windings to produce approximately 300 volts of alternating current