1990 Johnson Evinrude "ES" 9.9 thru 30 Service Manual, P/N 507871, Page 45Get this manual
Synchronization and linkage Adjustments -
9.9 thru 15
INote lit is important that this step-by-step procedure betofollowed in sequence and be performed exactly as written ensure
consistent engine idling and smooth operation throughout the RPM range If equipped, remove both remote control cables from the engine before performing these adjustments
LJ shown, to the carburetor throttle shaft
Cam Follower Pickup Point 1Connect throttle shaft amplifier
, such as the one