1998 Johnson Evinrude "EC" 2 thru 8 Service Manual, P/N 520202, Page 123Get this manual
STEPIGNITION MODULE RUNNING TEST I Note
Make all running tests at the engine RPM where the intermittent or high speed ignition problem existsThe correct RPM can have an effect on identifying the problem
1Set peak-reading voltmeter to "NEG" and "500"Twist and pull the primary leads off the ignition coilTurning in clockwise direction, attach terminal extenders to the primary terminals of the coilReconnect primary leads to terminal extendersObserve wire routing: orangeblue lead to the No.1 (top) cylinder
INote Route all tester leads so they do not interfere with moving
engine parts2Connect meter black lead to clean engine groundStart engine and run at RPM where problem exists
3Hold the meter red lead against metal part of the No.1 coil extenderDo not hold metal part of meter lead when engine is operatingStop the engine Meter should indicate continuous reading of 150 volts or higher