O.S. Carburetor Rotor #40BTower Stock# OSMG3727 • Manufacturer Stock# 25681200
Notes from our tech department:
Drum Valve ) for the O.S. #40B Carb. The #40B Carb is the one used on the O.S.
Hardened steel rotor.
1 Carb Rotor.
The rest of the carb parts. ( Carb body, needle valve, etc..)