Looking on fd620d . com @ FD620 FD620D Carburetor Rebuild Kit for John Deere 345/425 / 445 Rebuild MIA11386 MIA12362 AM118872 Carburetors, Hmmmmm, I'm wondering how to find out what carburetor is in that '93..... I have the serial number: M000425A013701, guess I'll be off to research that using the JD Catalog, I'd rather find a JD Kit if they offer one..... In the meantime this Package includes: Float Bowl Gasket, Manifold Gasket, Float Valve, Idle Screw, Mixture Screw, Piolet Jet, Main Jet, O-Rings, Springs and 4pcs of banding, also comes with new throttle shaft seal that replaces your old one that can leak and cause poor idling and lean running conditions. This Note is important: "Some variations of the FD620 engine may use different jet sizes."......