Patent ID: 7107689

Claim:
A retaining assembly for adjusting a tension of a cutting chain of a chainsaw having an engine chassis, a clutch cover having teeth, and a guide bar for the cutting chain, the retaining assembly comprising: a rotatable knob for operative coupling to the engine chassis, the clutch cover, and the guide bar, wherein the knob is rotated about a rotational axis between a tightened position, in which the guide bar is fixed in place between the engine chassis and the clutch cover, and a loosened position, in which the guide bar is loosened and can be repositioned to adjust the tension of the cutting chain on the guide bar; a lock operatively coupled to the rotatable knob and having at least one locking member projecting in a direction that is parallel to an axis of rotation of the rotatable knob; and a lever operatively coupled to the rotatable knob and the lock such that movement of the lever moves the at least one locking member into and out of engagement with the teeth provided on the clutch cover.