Troy-Bilt TB2BP EC 27cc 2-Cycle Gas Backpack Blower with JumpStart Technology This backpack gas leaf blower offers the power you expect from a backpack leaf blower with all the comfort and convenience you desire Premium 27cc 2-cycle full-crank engine with JumpStart-capable engine eliminates the need to pull cord making it easier to start and has less vibration Comfortable, ventilated harness with padded shoulder straps and hip belt Up to 145 mph air speed and 445 cfm air volume along with variable speed throttle with cruise control for blowing large piles of leaves and debris Long flex tube allows operator to maneuver around and under objects