1992 Johnson Evinrude "EN" 9.9 thru 30 Service Manual, P/N 508142, Page 132Get this manual
STEPRUNNING OUTPUT TEST
1Twist and remove primary leads from ignition coilsr,Ql 2.l!se .atwist to install Stevens Instrument NoTS-77 terminal extenders, or equivalent, on Ignition coli primary postsr,Ql 3Install primary leads on terminal extendersObserve proper wire routingOrangeblue primary lead must be connected to the No.1 ignition coilINotel Route all tester leads so they do not interfere with moving engine parts4Set peak-reading voltmeter to "POS" and "500"r,Ql 5C.onnect voltmeter red lead to No.1 terminal extenderConnect meter black lead to clean engme ground