Honda BF50 (5HP), BF5A Outboard Motors Shop Manual 2014, Page 25Get this manual
BF5C-SF5A 3) If the clearance is not within the specification, adjust by loosening the lock nut and turning the adjusting nut4) Tighten the lock nut securely5) Turn the shift lever gradually to the "REVERSE" side while turning the propeller by hand until it will no longer turn, then make sure the reverse lock pawls hook on the adjusting rod securely and the outboard motor will not tilt