1996 Johnson/Evinrude Outboards 50 thru 70 3-Cylinder Service Manual, Page 41Get this manual
Throttle Plate Synchronization
1Loosen the cam follower screw and push the cam follower
away from throttle camThe follower MUST NOT touch the
throttle cam during this procedure
2Loosen upper and lower carburetor linkage screws
3Verify that all throttle plates are closed