HIPA RB-73 Carburetor Repair Kit for ZAMA C1U-W4 C1U-W7 Poulan Craftman WeedEater String Trimmer Replacement manufacturer part number: RB-73 Fits ZAMA C1U-W4A C1U-W4B C1U-W4C C1U-W4D C1U-W4E C1U-W7C C1U-W7D carburetor