INDUSTRY-BEST COMBO OF AIR SPEED AND VOLUME ECHO X Series The industry’s best combination of air speed and air volume. The popular, professional-grade PB-770T backpack blower with tube-mounted throttle pushes an astonishing 756 CFM at 234 MPH to send leaves and debris out of sight, out of mind and off the workday to-do list. TOP FEATURES Side mounted, heavy duty, dual-stage air filtration system for longer engine life Padded shoulder straps and backrest 63.3 cc professional-grade, 2-stroke engine SPECS Type Backpack Engine Displacement (cc) 63.3 Carburetor (w/Purge Pump) Diaphragm Starting System Standard Fuel Capacity (fl. oz.) 68.3 See-Through Fuel Tank Standard Helper Handle Standard Air volume at nozzle 1 756 Maximum Air Speed (mph) at nozzle 1 234 dB(A) 1 74 Dry Weight (lbs) 2 24.3 Newtons (N) at nozzle 1 33 Warranty 5 year consumer / 2 year commercial table { width: 100%; border-collapse: collapse; text-align: center; border: 1px solid black } td, th { border: 1px solid #dddddd; padding: 8px; } table { width: 100%; border-collapse: collapse; text-align: center; border: 1px solid black } td, th { border: 1px solid #dddddd; padding: 8px; }