Machine description: John Deere 644 Wheel Loader. 188 Hrs Showing. John Deere. Diesel. Water Cooled Engine. 4WD. Articulated Steering. 20.5-25 Front Tires. 20.5-25 Rear Tires. Steel Rims. 104" Bucket Width. SN: 095391T ... more info about the John Deere 644.