The Satoh ST-2040 is a compact utility tractor produced from 1979 to 1981. It features a Mitsubishi 4-cylinder diesel liquid-cooled engine producing 19.7 hp (14.7 kW). The tractor has a 9-speed gear transmission with 9 forward and 3 reverse gears, arranged as three gears plus reverse in three ranges. It is equipped with four-wheel drive and weighs 2072 lbs (939 kg). The ST-2040 is part of a series including the ST-2020 (2WD) and ST-2320 models.