1998 Johnson Evinrude "EC" 40 thru 55 2-Cylinder Service Manual, P/N 520206, Page 135Get this manual
16 STEPRUNNING OUTPUT TEST
1Twist and remove primary leads from ignition coils
2Use clockwise twist to install Stevens NoTS-77 terminal extenders, or equivalent, on ignition coil primary posts3Install primary leads on terminal extendersObserve proper wire routingOrangeblue primary lead must be connected to the No.1 ignition coilRoute all tester leads so they do not interfere with moving engine parts
4Connect peak-reading voltmeter red lead to No.1 terminal extenderConnect meter black lead to clean engine ground5Adjust voltmeter to setting listed in following chartStart engine and run it under load at RPM where ignition problem existsMeter must show at least: Models 40RS, RP; 45, 55 40RE, BA 12 Amp 6Repeat Step for No.2 ignition coil: If either cylinder shows less than specified output, test charge coilRefer to STEPCHARGE COIL TEST If charge coil tests good, replace the power pack7Remove terminal extendersInstall ignition coil primary leadsObserve proper wire routing Orangeblue primary lead must be connected to the No.1 ignition coilVoltmeter "NEG," 500 "POS," 500 "POS," 500 Output 175 175 175