<> Zenith carbureot model 33 with accl pump hand choke
Zenith carburetor with acc pump Zenith carburetor model 33 with accl pump
Zenith carburetor model 33 with accl pump side

casting numbers for some of this carbs are
AR2-281-RP, BR-53C-R9, DR2-264-RP, BR4-53C-RP, DR4-53-RP