Husqvarna 570BTS Gas Backpack Leaf Blower The Husqvarna 570BTS is a powerful commercial backpack blower designed for the most demanding tasks. Heavy air flow and high air speed are delivered by an efficient fan working in harmony with the X-Torq engine. The pro-grade air filter ensures a long operating time and trouble-free use season after season. Plus, you’ll always feel comfortable with the wide shoulder straps on the harness. Features Ergonomic design Intuitive controls: the controls are well gathered and easy to access The 2-stage intake air filtration ensures long operation periods in dusty conditions Offset handle makes the blow forces easier to control by preventing the arm from being pulled downwards Auto return stop switch Automatically resets to the ON position for easier starting Air Purge removes air from carburetor and fuel system for easy starting Cruise control: fan speed can be set for easier handling The blowing tube length is adjustable for best performance Husqvarna 570BTS Gas Backpack Leaf Blower Model 570BTS Cylinder displacement 4 cu. in. Power output 4 hp Idling speed 2000 RPM Maximum power speed 8000 RPM Weight 24.7 lbs Tube Length 47.126 in Air flow in housing 972 cfm Air flow in pipe 768 cfm Air speed(flat nozzle) 202 mph Air speed (round nozzle) 236 mph Fuel consumption 431 g/kWh Fuel tank volume 74.4 fl oz Sound pressure 76 dB(A) Lubricant type Husqvarna 2 stroke or equiv. at 50:1 Equivalent vibration level (ahv, eq) handle 1.8 m/s²