1993 Johnson Evinrude "ET" 90 degrees CV Service Manual, P/N 508285, Page 107Get this manual
Indexing Flywheel, Erratic Ignition Internal power pack problems could cause power pack 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 plugsr,l 2Place the eraser end of pencil in the No.2 spark plug holeSlowly, turn the flywheel by hand, clockwise, until the greatest length of the pencil is outside the spark plug holeThis indicates the No.2 piston is near top dead center
'2l 3Mark on the flywheel
rim, directly across from the timing pointerLabel this mark "No.2
4Repeat Steps and for each of the remaining cylinders,