Abstract: Power equipment is designed to be operated by a user walking behind the power equipment, and includes an engine, a body, a drivetrain, a handle, a linkage, and a mechanism. The engine drives a working implement. The drivetrain links the engine to at least one wheel designed to drive the power equipment. The handle extends from the body, where at least a portion of the handle is designed to rotate relative to the body. Rotation of the at least a portion of the handle relative to the body is communicated to the drivetrain via the linkage, and controls a driving speed of the power equipment. The mechanism is designed to provide a mechanical advantage between rotation of the handle and operation of the linkage.

Abstract: A blade is secured to a blade adapter which is dimensioned to receive a fixed adapter. The fixed adapter is connected to the engine drive shaft of a rotary mower. The blade and fixed adapter are provided with cooperating surfaces which permit the adapters to be selectively locked together and separated from each other without requiring tools.

Abstract: A reversible mower blade is formed from an elongated length of bar stock, the end portions of the blade including respective outer segments twisted in opposite senses about the longitudinal axis of the blade's central portion and respective inner segments also twisted in opposite senses about the axis. The inner and outer segment which form an end portion of the blade are twisted about the axis in opposite sense relative to one another.