2007 Evinrude E-Tec 75, 90 HP outboards Service Manual, Page 140Get this manual
ELECTRICAL AND IGNITION FLYWHEEL SERVICING
FLYWHEEL SERVICING
IMPORTANT: Weak
flywheel magnets can cause low alternator output and affect outboard performanceWeak flywheel magnets can also cause low readings on ignition test equipment such as the peak-reading voltmeter, which might cause unnecessary replacement of ignition componentsAn accurate test of alternator output can help determine the flywheel's conditionRefer to CHARGING SYSTEM TESTS on p130