A fuel pump on a John Deere tractor has a sensor that helps regulate fuel flow into the carburetor. If the sensor is not working properly, the pump will not give the engine enough fuel to run, which causes the engine to backfire and randomly shut off.
Parts Diagram. Page 4/25. Bookmark File PDF John Deere D100 Owners Manual ... for tractors John Deere. John Deere D100, D110, D120, D130, D140 Service Manual PDF