1995 Johnson Evinrude "EO" 9.9 thru 30, 2-Cylinder Service Manual, P/N 503146, Page 46Get this manual
Synchronization and Linkage Adjustments20 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
If equipped, remove both remote control cables from the engine before performing these adjustments
Cam Follower Pickup Point
rv wise to the full SLOW positionadjusting knob counterclock1Tiller modelsturn the idle
f21 2Remote modelsback out the throttle arm stop screw until throttle arm touches screw's mounting bracketf31 3Connect throttle shaft amplifierlike the one shown, to the carburetor throttle shaft4Advance the throttle by moving the throttle control lever until tip of the amplifier begins to moveAt this point, the cam follower should contact the cam between the two marks f51 5To adjust, loosen the screw retaining the adjustment lever to the throttle shaftSlide the adjustment lever up or down to make the adjustmentMaximum Spark Advance