1998 Johnson Evinrude "EC" 40 thru 55 2-Cylinder Service Manual, P/N 520206, Page 123Get this manual
Indexing Flywheel, Erratic IgnitionAll Models Internal power pack problems could cause pack to fire errati cally 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
2Place the eraser end of pencil in holeSlowly turn the flywheel by hand greatest length of the pencil is outside the indicates the No.2 piston is near top dead
the No.2 spark plug clockwise, until the spark plug holeThis center
rn 3Mark on themark "Norim directly across from the timing flywheel pointerLabel this 2"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 iming pointer If another cylinder's number appears or the correct number appears more than once per revolutionverify ignition coil primary lead routing or replace power pack