... It is used for 431/GX31brush cutter. We produce 139F gasoline engine and mating spare parts.The mating spare parts include ... cylinder, ignition coil, flywheel, crank case etc.The139F gasoline engine with the following specifications:Engine type:Four strokeDiameter of ... Capacity1.0LType of CarburetorDiaphragmNet Weight3.50kgsCold Style:Air-cooled 139F gasoline engine used for brush cutter