1997 Johnson Evinrude "EU" 90, 105RW, 115, 150, 150W, 175 60 LV Service Manual, P/N 507268, Page 119Get this manual
Principles of Operation
Flywheel
The flywheel contains the permanent magnets necessary to energize the charge coils and power coilOnce the flywheel exceeds minimum cranking RPM, the flywheel's magnetic lines of force passing through the charge coil and power coil windings produce voltage in those circuits
The charge coil and power coil magnets are located around the flywheel's inner rimCharge Coils
rn The charge(strands of wireon the stator assemblyIt containscoil is located many windings wrapped around metal lamina
t ion)Once the flywheel exceeds minimum cranking RPM, the flywheel's magnetic lines offorce cut through the coil windings to produce voltageThe voltage is supplied to the power pack to operate the ignition system
V4has one charge coil V6has two charge coils
Power Coil
rn The power (strands of wireonwrapped around metalcontains coil is located the stator assemblyIt many windings laminat ion)Once the flywheel exceeds minimum cranking RPM, the lywheel 's magnetic lines offorce cutthrough the coil windings to produce voltageThe voltage is supplied to the power pack to operate the following systems :