1990 Johnson Evinrude 120 thru 140, 185 thru 225, 300 HP, Service Repair Manual P/N 507875, Page 335Get this manual
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Charging System Check Chart WHERE TO LOOK
1 Pg 7-28 thru 7-30 2 Pg 7-29
Alternator stator
1 Damaged stator windings 2 Weak flywheel magnets 3 Damaged stator leads