Simplicity 400

The Simplicity 400 is a riding lawn mower produced from 1961 to 1964 as part of the Wonder Boy Series. It was built in Port Washington, Wisconsin, USA, and originally sold for $325 in 1963. 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 speeds. The mower rides on 10x2.50 front tires and 4.00x8 rear tires. Attachments include a 24-inch mid-mount mower deck with a single blade and manual lift, capable of cutting grass at heights from 1.5 to 2.625 inches.