MODELS: FS61 FS56 FS66 FS81 FS86 FS88 FS96 FS106. STIHL BRUSHCUTTER CARBURETTOR CARB REPAIR KIT. Walbro Series Carburetor Service & Overhaul Kit. Fitted with Walbro Carbs. Also supplied with an excellent correct copy of the original Stihl Factory Carb exploded diagram.