The John Deere 544E Wheel Loader with Coupler features a 115 hp (86 kW) turbocharged six-cylinder diesel engine (model 6359T) delivering peak torque of 343 lb-ft at 1500 rpm. It has a displacement of 359 cu in (5.9 L) and a power shift transmission with 4 forward and 3 reverse gears, reaching maximum speeds of 24.6 mph forward and 17.2 mph reverse. The loader operates at 12 V electrical system with a 65 A alternator. Hydraulic functions include a gear pump with 46.3 gal/min flow capacity, 2750 psi relief valve setting, and cycle times of 5.8 seconds to raise, 1.4 seconds to dump, and 3.2 seconds to lower the bucket. Bucket breakout force is 25,115 lbs, with a heaped capacity of 1.8 cubic yards and struck capacity of 1.5 cubic yards, mounted on an 8-ft wide bucket. The machine dimensions are 22.5 ft length with bucket on ground, 10.4 ft height to cab top, 9.6 ft wheelbase, and 7.8 ft width over tires sized 15.5-25. Ground clearance is 1.3 ft, with a hinge pin max height of 12.3 ft and dump clearance of 9.4 ft. Operating weight is 23,041 lbs. It supports rear axle oscillation of 22°, with fluid capacities including 55 gal fuel, 20.1 gal hydraulic, 6.4 gal cooling system, and 5.1 gal engine oil. The articulated frame loader offers a turning radius of 16.3 ft, front and rear planetary final drives, and power brakes, suited for high productivity in loading and material handling tasks.