The Ariens Emperor 7 is a riding lawn mower produced from 1968 to 1972 as part of the Emperor Series. It was built in Brillion, Wisconsin, USA, and originally priced at $470 in 1968. It features a 7 hp Tecumseh V70 245cc 1-cylinder gasoline engine with air-cooled vertical shaft, available with manual recoil or electric start (model 3ML7DE). The transmission is a Disc-O-Matic 4-speed friction disc with 4 forward and 1 reverse gear. The mower has two-wheel drive, manual steering, mechanical band brakes, and an open operator station. It includes an independent mid PTO with a mechanical idler clutch. Dimensions include a 46.5 inch wheelbase, 66 inch length, 24 inch width, 36 inch height at steering wheel, and a shipping weight of 371 lbs. Tires are 11x4.00-5 front and 16x5.50-8 rear. Attachments include 26" and 30" mid-mount mower decks and a front-mount 30" blade.