The Simplicity 401 is a riding lawn mower produced from 1965 to 1966 as part of the Wonder Boy Series. It features a 4 hp Briggs & Stratton 1-cylinder air-cooled gasoline engine with manual recoil start. The transmission is a belt-driven gear type with 2 forward and reverse gears. It has two-wheel drive and manual steering with an open operator station. The mower includes a 24-inch mid-mount mower deck with a single blade. It was built in Port Washington, Wisconsin, USA, and originally sold for $340 in 1966.
Simplicity 401riding lawn mower4 hp Briggs & Stratton engine2-speed transmission24 inch mower deckWonder Boy Serieslawn tractors