Honda Outboards BF40A/BF50A Service Manual, Page 182Get this manual
HONDABF35A4!5A 8) After adjustment tighten the lock nut securely and reconnect the throttle control cable9) Move the remote control lever and check that control lever moves smoothly and that the carburetor throttle lever moves smoothly without binding from the fully-open to the fully-closed position SHIFT CONTROL CABLE 1) Disconnect the shift control cable from the shift arm tllll! shift in "Ru and visually inspect that the click roller is in the center of the groove on the shift link at the (R) mark[1] CLICK ROLLER
SHIFT LINK B
2) If no, loosen the lock nut and turn the adjusting nut, separate the shift rods and B3) Push the shift rod to its lowest positionTurn the lock nut until the distance from top of the shift rod is mm (0.3 in) and then tum the adjusting nut of shift rod in as required4) Tighten the lock nut securely(5)