1998 Johnson Evinrude "EC" 90, 115 SPL Service Manual, P/N 520209, Page 123Get this manual
14 DR4052
STEPPOWER PACK TEST
To prevent accidental starting of engine while testing, twist and remove all spark plug leads
1Twist and remove all primary leads from ignition coils
2Connect No.1 ignition coil primary lead to Stevens load adapter NoPL-88 red lead Connect adapter black lead to clean engine ground
INotellf
Stevens NoPL-88 is not available, you can make an adapter using 10-ohm, 10-watt resistor, Radio Shack No271-132, or equivalent
3Set peak-reading voltmeter to "POS" and "500"