Your Carburetor Will Come Fully Adjusted "To Your Tractor".---------- You Mount It, ----------You Warm It Up------ And Go.---------Just Read My Feedback. I Have Restored A Number of Ford Ns Series Tractors. I Have Rebuilt 100s of Carburetors Both Marvel Schebler And Zenith. They Fit JDs Furguson AC Cockshuts And Fords, But 95% Were N Fords.The Carburetor Itself Was an Original USA Made Unit. This Original Unit Is Remanufactured As Per eBay's Guidelines. We Have 100s of Original USA Made Marvel Schebler Parts. This Carburetor Is 98% Made In The USA Original Marvel Schebler Parts. This Carburetor Will Fit All Ford 9N 2N 8N Tractors. Don't Forget An Untested Carburetor Is----------- A Shot In The Dark.