Carburetor Kit / Tillotson RK-35HSPack Size:1Tillotson RK-35HSTillotson HK-36A, HK-41A, HS-309A thru C, HS-310A thru C, HS-311A thru C, HS-312A, HS-312B, HS-313A thru C; Wacker BS50-2, BS50-2i, BS60-2, BS60-2i, BS70-2, BS-70-2iEthanol: Not compatible with greater than 10% ethanol fuel