1997 Johnson Evinrude "EU" 40 thru 55 2-Cylinder Service Repair Manual, P/N 507265, Page 130Get this manual
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STEPCHARGE COIL TEST Ground Test[1 Disconnect 5-pin Amphenol connector2 Set peak-reading voltmeter to "POS" and "500"[[] 3 Alternately, connect voltmeter between charge coil terminals and clean engine