The Zettelmeyer ZL502 is a compact wheel loader designed for versatile material handling with a focus on high breakout force and lifting capacity. Powered by a 4-cylinder KHD F 4L 1011 direct-aspiration engine, it delivers a gross power of 48.3 hp (36 kW) at 2800 rpm and net power of 47 hp (35 kW), with maximum torque available at 1600 rpm. The hydrostatic transmission provides smooth operation with two forward and two reverse gears, enabling a maximum travel speed of 12.5 mph (19 kph) in both directions. The loader’s bucket features a breakout force of approximately 8992 lbs (4,079 kg) and a heaped capacity of 0.9 cubic yards (0.7 struck), with a bucket width of 5.8 ft (2 m). It offers a dump clearance at maximum raise of 8.3 ft (2 m) and a reach of 2.5 ft (1 m). The Z-bar loader linkage, operated by two lifting cylinders, ensures excellent lifting and fork-lift capability. In terms of dimensions, the ZL502 measures 16.8 ft (5 m) in length with the bucket on the ground, 5.7 ft (2 m) in width over tires, and 8.5 ft (2 m) in height to the top of the cab. It maintains a ground clearance of 1.5 ft (0 m) and a wheelbase of 6.6 ft (2 m). The machine weighs approximately 9259 lbs (4,200 kg), with a static tipping weight of 6724 lbs (3,050 kg), and features a rear axle oscillation of 20° for increased stability on uneven terrain. Hydraulics include a tandem gear pump with a flow capacity of 11.9 gal/min (42 l/min), a relief valve setting of 3000 psi, and efficient cycle times: 1 second dump, 6 seconds raise, and 3 seconds lower. Fuel capacity is 15.9 gallons (57 liters), supporting extended operation in the field. The loader runs on a 12V electrical system with a 60A alternator. Tire size is 12.5-18, and the turning radius is 13.4 ft (4 m). This loader, manufactured in the mid-1990s, is compact yet powerful, suitable for construction and material handling requiring agility and robust performance.