The Craftsman 131.8136 is a 1974 lawn tractor built by Roper and distributed by Craftsman (a part of Sears). It features an 8 horsepower, 1-cylinder gasoline engine with electric starter and a 3-speed belt-driven gear transmission with 3 forward and 1 reverse gears. The tractor has two-wheel drive, manual steering, disc brakes, and an open operator station. It weighs 408 lbs (185 kg) and measures 60 inches in length and 40 inches in height to the steering wheel. Tires are sized 15x6 front and 18x9.5 rear. Electrical system is 12 volts with negative ground. Attachments include a 36-inch mid-mount Craftsman mower deck with 2 blades, manual lift, and adjustable cutting height from 1.5 to 3.5 inches.