1987 Johnson/Evinrude CU Outboards 35A thru 55 Service Manual, Page 154Get this manual
1141 Step 3Power Pack Running Test Using C.DVoltmeter
r:j4l Set the voltmeter switches to "-" and "500 Twist and pull
L:!.J the primary leads off the ignition coilsTurning in clockwise direction, attach terminal extenders to the primary terminal of the ignition coilsReconnect the primary leads to the terminal extendersObserve wire routing and ignition timing: orangeblue lead to the No.1 (top) ignition coil