1993 Johnson Evinrude "ET" 60 thru 70 Service Manual, P/N 508284, Page 131Get this manual
STEPPOWER PACK TEST
it To prevent accidental starting of engine while testing, twist and remove all spark plug leads1Twist and remove all primary leads from ignition coils115l 2Connect No1 ignition coil primary lead to Stevens Instrument load adapter NoPL-88 red leadConnect adapter black lead to clean engine groundIf Stevens Instrument NoPL-88 is not available, you can make an adapter using 10-ohm, 10-watt resistor, Radio Shack No271-132, or equivalent3Set peak-reading voltmeter to "POS" and "500"4Connect voltmeter red lead to adapter red lead and meter black lead to clean engine ground5Crank engine and observe meter Meter must show 190 volts or higher