The Ariens Emperor 10 is a 1978 riding lawn mower from the Emperor 925 Series, built in Brillion, Wisconsin, USA. It features a 10 hp Tecumseh VM100 331cc 1-cylinder air-cooled gasoline engine with manual recoil and optional electric starter. The mower uses a 6-speed friction disc transmission called Disc-O-Matic with 6 forward and 1 reverse gear. It has two-wheel drive and manual steering with an open operator station. The mower includes a mid PTO with an independent mechanical idler clutch. Attachments include 30-inch and 38-inch mid-mount mower decks and a front-mount blade. Variants include models with 30-inch and 38-inch decks.