1998 Johnson Evinrude EC 50 thru 70 HP 3-Cylinder Service Manual, Page 107Get this manual
Flywheel Servicing
In order to produce the 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 peak-reading voltmeter, which may cause unnecessary replacement of ignition componentsFlywheels rarely go bad and would only be replaced as last resort in solving an ignition problemAn accurate test of alternator output can help determine the flywheel's conditionRefer to Running Test, Alternator Output, Section 8Removal
1To avoid accidental starting of engine while servicing, twist and remove all spark plug leads[] 2Remove flywheel nut using CIVIC Flywheel Holder, PIN 771311, or other suitable tool to hold the flywheel