1983 Johnson/Evinrude 2 thru V-6 outboards Service Repair Manual P/N 393765, Page 32Get this manual
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Specifications4.5, and 7.5
Ignition Coil Test Specifications Stevens Model ST-75 Reverse Polarity (Switch Setting CD) Stevens Tester Model M.A.75 or M.A80 Switch -A Index Adjustment 20