New to forum & Rochester Carb Issues

[Wrenchbender Ret]

The tang contacts the choke linkage to open the choke part way when the engine starts. The screw adjusts the amount of opening. There is generally a rod that goes from the pulloff to the secondary butterflies to prevent them from opening untill the vacuum falls off. The secondary pulloff opens the choke also. With tha round choke like that has you can easily change to an electric choke if you wanted.