1993 Johnson Evinrude "ET" 9.9 thru 30 Service Manual, P/N 508282, Page 135Get this manual
15 DR4052
STEPPOWER PACK OUTPUT TEST
To prevent accidental starting of engine while testing, twist and remove both spark plug leads
1Twist and remove primary leads from ignition coilsf151 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 equivalent
f151 3C.onnect peak-reading voltmeter red lead to adapter red lead and meter black lead to clean engme ground4Adjust voltmeter to settings listed in following chartCrank engine and observe meterMeter must show at least: