The John Deere 3641 is a utility tractor from the 41 Series produced between 1982 and 1987. It features a turbocharged 5.8L 6-cylinder ADE diesel engine, an 8-speed transmission with 8 forward and 4 reverse gears, and offers two- or four-wheel drive options. The tractor includes power steering and an open operator station. It was built in Nigel, South Africa. The rear PTO operates at 540/1000 rpm. The tractor weighs 8800 lbs (3991 kg) and uses a 12-volt electrical system with negative ground and an alternator charging system.