The Yard-Man 3960 is a lawn tractor produced from 1974 to 1976 by Yard-Man in Jackson, Michigan, USA. It features a 10 hp Briggs & Stratton 399cc 1-cylinder gasoline engine, a 3-speed Peerless 650 belt-driven gear transmission with 3 forward and 1 reverse gears, and two-wheel drive with manual steering. The tractor has an open operator station and uses 13x5.00-6 front tires and 18x9.50 rear tires. Electrical system is 12 volts with negative ground. Attachments include a 36" mid-mount mower deck, a 32" snowblower, and a 42" blade, all front-mountable.