The Jinma JM-504 is a farm tractor manufactured by Jinma in Yancheng City, China. It features a 4-cylinder liquid-cooled diesel engine producing 50 hp (37.3 kW) at 2400 RPM. The tractor has a 16-speed transmission with 16 forward and 8 reverse gears and four-wheel drive. It includes a rear hitch of types I and II with a rear lift capacity of 1866 lbs (846 kg). The rear PTO is live and supports 540/720/1000 RPM. Dimensions include a wheelbase of 79.1 inches (200 cm), length of 152.2 inches (386 cm), width of 64 inches (162 cm), height of 81.3 inches (206 cm), and weight of 4665 lbs (2116 kg). The tractor rides on 8.3-20 front tires and 12.4-28 rear tires.