Model B camshaft

[Gary in La.]

I'm selling model A parts out of a small shop for the family of a deceased friend. There is a camshaft tagged Model B. How can you tell if it is a Model B or just a Model A camshaft? Thanks in advance.

 

[Terry NJ]

About i/4 down it's length, from the gear end, it will have an eccentric for the fuel pump if it's a B , A s don't have that, no fuel pump.
Terry

 

[Gary in La.]

Thanks Terry. I had forgot about the fuel pump. It's been too many years since I worked on the Model A's. AND it's a B.