1997 Johnson Evinrude "EU" 90 thru 115 90 CV Service Manual, P/N 507267, Page 38Get this manual
Synchronization and Linkage Adjustments
INote It is important that this step-by-step procedure be followed
in sequence and be performed exactly as written to ensure consistent engine idling and smooth operation throughout the RPM range
INote Remove
both remote control cables from the engine before performing the following adjustments
Timing Pointer
INotellfthe timing pointer or intake manifold has been disturbed, check the top dead center timing pointer alignment
1To prevent accidental starting of the motor, disconnect the spark plug leads and remove the spark plugs
2Center the timer pointer Rotate the flywheel in clockwise direction until the cast-in TOC mark is approximately 1112 in(4 em) past the timing pointer3Install ONIC Piston Stop, PIN 384887, in No.1 spark plug hole and turn in center portion until it contacts the No.1 pistonLock the tool in place with ring