A-B1WWYA1-AI CARBURETOROne New Aftermarket Replacement Carburetor for RedMax 2 Cycle Trimmers and Stick Edgers This aftermarket replacement carburetor is a direct replacement for the Fits Walbro WYA 1 1 unit used on RedMax (Red Max) 2 cycle handheld trimmers and stick edgers. The carburetor is a diaphragm type carb designed for small 2 cycle engines, regulating the air fuel mixture required for reliable starting and consistent engine performance. Compatible Models RedMax