Honda Outboards BF40A/BF50A Service Manual, Page 57Get this manual
HONDABF35A45A 2) Check that the two reference marks on the throttle cam align with the center of the rollerIf they do not align, adjust as follows[2] REFERENCE MARKS
(1THROTTLE CAM
3) Remove the mm lock pin and mm plain washers from the shift pivot, and detach the shift pivot from the throttle arm 4) Loosen the shift pivot lock nut and adjust by turning the shift pivotAfter adjustment, tighten the lock nut and attach the shift pivot to the throttle arm
[1] mm PLAIN WASHER (2)
[2] SHIFT PIVOT