The Mud Dog 650 hydro excavator is designed for digging in confined urban settings, rough compact terrain or hard-to-reach locations. It features a 6.5-cu-yd debris dump body and a 500-gal freshwater tank, offering water pressures up to 10 gal per minute at 2,500 psi. An 8-in. positive displacement vacuum provides airflow of 3600 cfm/18 hg for debris cleanup. The excavator runs on a single engine to save energy costs.