The Murray 3663 is a lawn tractor produced from 1975 to 1976 by Murray in Lawrenceburg, Tennessee, USA. It features an 8 hp Briggs & Stratton 1-cylinder air-cooled gasoline engine with electric start. The transmission is a 3-speed belt-driven gear type with 3 forward and 1 reverse gears. It has two-wheel drive, manual steering, and disc brakes with an open operator station. The tractor weighs 497 lbs (225 kg) and rides on 15x6.00 front tires and 18x9.50 rear tires. Electrical system is 12 volts with negative ground. Attachments include a 36" mid-mount mower deck, a 42" front-mount blade, and a 36" front-mount single-stage snow blower.