Float Needle - 34mm. This float needle controls fuel entry into the float bowl so the carburetor can maintain the correct fuel level.Choose this float needle when fuel overflows, the bowl level creeps up, or the old needle and seat are grooved, dirty, or leaking.Fitment / CompatibilityFits Yamaha: Yamaha SR250 (1980, 1982) Yamaha SR250TH 1981 Yamaha XS400 (1980-81) Yamaha XS400S (1980-82) Yamaha XS650 (1980-81) Yamaha XS650S (1980-83) Yamaha XS1100 (1980-81) Product Details Carburetor float valve / needle seat part Carburetor fit/detail: 34mm Sold individually XS650Direct part number: 48-5014 Before Ordering Match float-valve size, seat style, carburetor series, gasket/O-ring fit, and clip style. Set float height and check for leaks before reinstalling the carburetor.