Honda BF50 (5HP), BF5A Outboard Motors Shop Manual 2014, Page 116Get this manual
LOWER UNIT Cluch Gear ratio Gear case oil capacity Number of blades Size (Diameter Pitch) Propeller Rotating direction Dog clutch (Forward-Neutral-Reverse) 0.48 (1327) 0.1 (0 .21 US qt, 0.181mp qt) 200 190 mm (7 -78 7-1 2 in) (Standard) 200 170 mm (7 -78 6-58 in) (Optional) Clockwise (viewed from rear)