1998 Johnson Evinrude EC 50 thru 70 HP 3-Cylinder Service Repair Manual P/N 520208, Page 137Get this manual
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STEPPOWER
10-ohm, 10-watt resistor,
3 Set peak-reading voltmeter to "POS" and "500"
4 Connect voltmeter red lead to adapter red lead and meter bIack lead to