The Zenith model 51AX9 carburetor was an SAE 1" nominal size cast-iron updraft carburetor. It was used on 1936-1945 Oliver 70HC tractors, carburetor numbers 7771 and 8334.
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How to find Zenith carburetor numbers
The Zenith model 51AX9 carburetor was an SAE 1" nominal size cast-iron updraft carburetor. It was used on 1936-1945 Oliver 70HC tractors, carburetor numbers 7771 and 8334.
How to find Zenith carburetor numbers