1990 Johnson Evinrude "ES" Cross V 88 thru 115, 150 thru 175, P/N 507874, Page 129Get this manual
STEPRUNNING OUTPUT TEST
1Twist and remove all primary leads from ignition coils
in install terminal extenders Stevens Instrument NoTS-77 or equivalent, to Ignition coli pnmary posts
Connect orangeblue leads to top ignition coils, orange leads to center ignition coils, and orangegreen leads to bottom ignition coils
11413Install primary leads on terminal extendersObserve proper wire routing and ignition timing
INotel Route all tester leads so they do not interfere with moving engine parts4Set peak-reading voltmeter to "POS" and "500
11415Connect PRV meter red lead to No.1 terminal extenderConnect meter black lead to clean engine