Basic Carburetor Kit for Allis Chalmers tractors with Zenith #s: 9707 or 10981, often found on Allis Chalmers WD, WF and WC tractors. This kit includes gaskets, needle, seat and throttle shaft. Please note: Some Allis Chalmers tractors were equipped with a Marvel Schebler carburetor. Please verify the numbers and brand on your carburetor before ordering parts to ensure a proper kit is ordered.