"Priceless" wrote:

Per 7M, 3t, and 4t Army repair Manual the specs and drawing are the same as the above RD6 specs
I had a very rusted carb to work with and thought very hard about buying a better one, but instead I threw all the parts in a bucket of Evopo-Rust and let it set for about 2 weeks. I would go through the bucket every few days and pull out all the parts and wash them off, pick at the rust, run drills in the holes best I could and then put the parts back in the bucket. I was worried about the brass jets but I saw no effect on them. I did get all passages clean with drill bits (by hand) and put the parts back in for a few more days as when the Evopo-Rust is done it leaves the metal a nice clean gray finish. I did not remove any brass jets, thinking I could do that later if it didn't work right. The carb works fine.

I like the evapo-rust, it works great and is friendly to your hands & washes away with water