[History]

My brother was telling me yesterday about a 135 Massey ferguson tractor he has that is gasoline powered. He rebuilt the carburetor and like on a zenith thought he had a leak and over tightened the drain plug and cracked the bottom of the carb. He was helping an old fellow who bought salvaged material and junk equipment and he was junking something that had the same carburetor on it. He was able to get it and used the bottom on his. He said the Venturi was smaller and the tractor ran the best it ever had. Are there any problems with the zenith carburetors having adifferent sized Venturi? Do they wear and the throats gets Larger?

When I rebuilt mine I got an original Venturi from Renners corner that had been blasted to clean it, can't remember what was used for the media. I also ordered a new one from Snyders and there were differences that I can't recall but were noticeable. I didn't mic the inside diameter.