Stens 615-086 Carburetor Kit Replaces: Zama rib-66 Fits models: Zama: c1q-s28, a-d; c1q-s29, a-c; c1q-s30, a-c; c1q-s30, a-c; c1q-s41, a; c1q-s42, a; c1q-s44, a; c1q-s45 Carburetors Ethanol: not compatible with greater than 10% ethanol fuel