JD A Serial No 584000 and up MS DLTX-71This is a M-S Model DLTX-71 Carburetor fits John Deere A Tractors Serial No 584000-UP Gasoline. Other units and parts are available for this and other carburetors. All new and used parts are Warranted for 90 days, Rebuilt Units are Warranted for 2 Years. If You get the wrong part or are not 100% completely satisfied with it, Send it Back for a Complete Refund. Please Call for prices on C.O.D. and Foreign Shipping.