1994 Johnson Evinrude "ER" 60 LV 150, 150C, 175 Service Manual, P/N 500611, Page 248Get this manual
Description of Charging System The charging system consists of battery, flywheel, an alternator stator, and rectifierregulator which provides full wave regulation of the systemFlywheel
f1l The engine's flywheel contains the permanently charged magnets which provide the energy to power the stator windingsThe magnets must be at their original design strength for full alternator output
alternator stator consists of many windings of wire wrapped around metal laminationsThe flywheel's magnetic lines of force cutting through the stator windings produce alternating current