The Valmet 6400 is a row-crop tractor produced from 1991 to 2003 as part of the Mezzo Series by Valmet. It features a turbocharged 4-cylinder SisuDiesel 420DS engine with 93.8 hp (69.9 kW) power output. Transmission options include a 24-speed two-speed power shift and a 36-speed three-speed power shift Delta Powershift. The tractor offers two- or four-wheel drive, power steering, wet disc brakes, and a standard cab with optional air-conditioning. It has a fuel tank capacity of 43.6 gallons (165.0 L), hydraulic pump flow of 18.5 gpm (70.0 lpm), and a rear hitch lift capacity of 9700 lbs (4399 kg). The rear PTO is independent with 540/1000 RPM options. Dimensions include a 91.6 inch (232 cm) wheelbase, 177.7 inch (451 cm) length, and 8488 lbs (3850 kg) weight. Tire sizes are 11.00-16 or 13.6R24 front and 16.9R34 rear. Electrical system features a 12 volt battery and 120 amp alternator.