1995 Johnson/Evinrude Outboards 40 thru 55 2-Cylinder Service Manual, Page 124Get this manual
Indexing Flywheel, Erratic IgnitionAll Models Internal ignition module problems could cause module to fire erratically or continuouslyTo troubleshoot this situation, you must determine that each cylinder is firing at the correct time and no more than once per revolution1Disconnect the spark plug leads and remove all spark plugs
rv Slowly turn eraser end of bypencil clockwise, until the greatest 2Place the in the No.2 spark plug holethe flywheel hand
length of the pencil is outside the spark plug holeThis indicates the No.2 piston is near top dead centerf21 3Mark on the flywheel rim directly across from the timing pointerLabel this mark "No2"4Install the spark plugs and spark plug leadsStart the engine in test tank and run the engine at the RPM where the problem exists5Carefully hook an induction timing light to each cylinder, alternatelyThe timing light should indicate that cylinder's number only and the number should only appear near the timing pointer If another cylinder's number appears or the correct number appears more than once per revolution, verify ignition coil primary lead routing or replace ignition module