1988 Johnson Evinrude "CC" 9.9 thru 30 Service Manual, P/N 507660, Page 64Get 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 rangeINotel lf equipped, remove both remote control cables from the engine before performing these adjustments
Cam Follower Pickup Point
r:;l 1Connect throttle shaft amplifiersuch as the one shown, to the carburetor throttle shaft
r:;l 2Advance the throttle until the tip of amplifier begins to moveAt this point, the roller should align with single mark on cam
3Back out cam follower adjustment screw with OMC Ballhex Driver PI 327622 until the throttle valve is closed completelyThen advance the screw until the throttle shaft just begins to rotateWide Open Throttle Stop1Shift the engine into forward gear2 Increase throttle to wide open position