1988 Johnson/Evinrude "CC" 40 thru 55 Models Service Manual, Page 127Get this manual
Flywheel Servicing InformationAll Models rr:;t:l In order to produce the current and voltage necessary to
run an ignition system, the flywheel magnets must be of particular strengthWeak flywheel magnets can cause low ignition voltage which could affect motor performanceWeak flywheel magnets can also cause low readings on ignition test equipment such as the C.D voltmeter which may cause unnecessary replacement of ignition components Flywheel magnets rarely go bad and would only be checked as last resort in solving an ignition problemRemoval of Flywheel '" 1To avoid accidental starting of engine, twist and remove Remove the flywheel nut using strap wrench or other suitable tool to hold the flywheel