RK-18HU Genuine Tillotson HU Carburetor Repair Kit RK-18HU Genuine Tillotson HU Carburetor Repair Kit HU-77A, HU-79A, HU-86A, HU-88A, HU-88B HU-89A, HU-89B, HU-90A, HU-90B, HU-91A, HU-92A HU-94A, HU-94B, HU-95A, HU-96A, HU-98A, HU-99B, HU-99C HU-99D, HU-100A, HU-100B & HU-100C