1996 Johnson/Evinrude Outboards 25, 35 3-Cylinder Service Manual, Page 39Get this manual
Throttle Plate Synchronization
1Remove the air silencer[] 2Use 56 inball-hex driver to turn the cam follower adjustment screw counterclockwise until the cam and cam follower are NOT touching
3Use No20 Torx driver to loosen the two carburetor link screws
4Verify that all throttle plates are completely closed 5Apply light downward pressure to tabs of adjusting links and tighten first the lower then the upper carburetor link screws
Idle Timing
INote The boat and engine must be in the water under normal
operating conditions with the correct propeller installedThe boat's movement must be unrestrainedThe boat must not be tied to dock or trailer