Carburetor Repair Kit - YamahaKit includes all necessary O-rings, gaskets, jets, needle, mixture screw, float bowl screws, float valve needle and seat NBR rubber material is used on all O-rings and rubber gaskets; NBR has excellent resistance to the ethanol used in today's fuelsApplications that use paper float bowl gaskets are upgraded to High Performance Interference Gasket materialOEM jet sizes and slide needles are included in the kit