1990 Johnson Evinrude "ES" Cross V 88 thru 115, 150 thru 175, P/N 507874, Page 119Get this manual
1141 STEP RUNNING OUTPUT TEST
1Twist and remove all primary leads from ignition coils1141 2Twisting in clockwise direction, install terminal extenders Stevens Instrument NoTS-77 or equivalent, to ignition coil primary postsf14l 3Install primary leads on terminal extendersObserve proper wire routingConnect orangeblue lead to No.1 coil, orangepurple lead to No.2 coil, orangegreen lead to No.3 coil, and orangepink lead to No.4 coil
INotel Route all tester leads so they do not interfere with moving engine parts4Set peak-reading voltmeter to "POS" and "500 f14l 5Connect PRV meter red lead to No.1 terminal extenderConnect meter black lead to clean engine 6Start engine and run under load at RPM where ignition problem exists Meter must show 230 volts or higher7Repeat Steps and for remaining cylinders If one or more cylinders show low output, go to STEPCHARGE COIL TEST If one or more cylinders show no output, go to STEPSENSOR COIL TEST