This a replacement O.S. Engines Propeller Nut, and ...
is intended for use with O.S. engines that have a 1/4" crank thread. This Part Is Used With The Following O.S. Engines 50 SX 46 VX 46 FX 46 LA 40 FX 40 LA FS-40 32 SX ...
4-Stroke Pumped Engine. 200-size power in a 120-size package! How do you get 200-size power from a 120-size engine? O.S. calls it the FS155-a. Since the FS155-a is a pumped 4-stroke, you’ll ...