I have a 1946 2 ton with a W - 1 Carter. Looked to be the original carb.
When I went to buy a rebuild kit they needed to see the carb to know if it was a YF or not.
The way they told me was that if the accelerator pump rod was round or flat.
My carb's rod was flat. Though I am not sure if that meant if it was a YF or not at this point.
Last edited by 32vld; 07/12/2015 4:30 PM.