The Simplicity 3105 is a riding lawn mower produced from 1980 to 1985 as part of the Cavalier 3100 Series. It features a 5 hp Briggs & Stratton 206cc 1-cylinder gasoline engine, a 5-speed belt-driven gear transmission with 1 reverse gear, and two-wheel manual steering. The mower is equipped with a 26-inch mid-mount mower deck with 6 cut height positions. It was built in Port Washington, Wisconsin, USA.