The ECHO PB-580T gas leaf blower features a 58.2cc professional-grade, 2-stroke engine with a tube-mounted throttle. This yard blower delivers 517 CFM and 216 MPH blowing performance for a powerful impact. The uniquely vented backpack featured on this lawn blower circulates air around the user for increased comfort in hot weather. Its compact and durable design offers easy transport around your yard area. Features: Use a 50:1 ratio of fuel to oil mix for 2-stroke cycle engines; recommend using only fresh gas with a minimum octane rating of 89 or higher (mid-grade to premium) at all times A 50:1 Ratio = 1 US Gal. 89 Octane + 2.6 fl. oz. ECHO PowerBlend Oil OR ECHO Red Armor Oil Gas leaf blower features a 58.2cc professional-grade 2-stroke engine Lawn blower comes with a 5-year consumer / 2-year commercial warranty Unique vented back pad for hot weather and padded backrest/shoulder pads Posi-loc pipes provide secure connection Tube mounted throttle with cruise control Top performing power Pleated, automotive-style air filter for improved filtration and long engine life Metal wear ring at the end of the tube protects the pipe from damage A leaf guard prevents overheating due to leaves and other debris blocking the blower intake Manual start-up affords efficiency Translucent fuel tank lets you keep an eye on fuel levels Note: product may vary by store Shop Echo Gas Chainsaws Here