1997 Johnson/Evinrude EU 25, 35 HP 3-Cylinder outboards Service Manual, Page 118Get this manual
DRC6002
STEPIGNITION MODULE TEST
1Prevent accidental starting of engine while testing; twist and remove all spark plug leads
2Twist and remove primary lead from ignition coil
rn 3.engine groundlead to Stevens PL-88 load adapter red leadConnect adapter black lead to Connect primary clean
INote If Stevens NoPL-88 is not available, you can make an adapter using 10-ohm, 10-watt resistor,
Radio Shack No271 -132, or equivalent
4Set peak-reading voltmeter to "POS" and "500"5Connect meter red lead to adapter red lead, and meter black lead to clean engine ground