Honda Outboards BF40A/BF50A Service Manual, Page 317Get this manual
BF40A-BF50A 4) Adjust as follows, if necessary5) Loosen the shift pivot lock nut, remove the mm lock pin and mm washer, and disconnect the throttle cable6) Turn the throttle grip to the fully open position and hold it in the position using the friction grip7) Remove the throttle rod pivot from the throttle cam
8) Pulling the throttle cable's shift pivot lightly, turn the shift pivot so that the throttle cable can be connected smoothly to the throttle arm that is set in the fully open position (i.ethrottle arm is lightly in contact with the fully open stopper)9) Connect the throttle cable to the throttle arm and tighten the shift pivot lock nut securely