Carburetor Kit / Walbro K10-HDCPack Size:1Walbro K10-HDCJ. Thomas W10-W12, Laser 48066, Laser 40744, NHC 203-5658, Oregon 49-833, Prime Line 7-07184, Rotary 8341, Sunbelt WAL-K10-HDCWalbro HDC model carburetors Replaces K1-HDC, Not compatible with greater than 10% ethanol fuel