Patent ID: 7716907

Claim:
A height of cut adjustment mechanism for a rotary cutting deck mounted on a lift arm extending from a traction vehicle, comprising: a front pair of height of cut arms and a rear pair of height of cut arms pivotally attached to the rotary cutting deck, each pair of height of cut arms having a ground engaging roller mounted therebetween, and each height of cut arm pivotable relative to the rotary cutting deck to a plurality of positions to support the mower deck at a plurality of different cutting heights; a notch lock movable through a slot in each height of cut arm between a locked position and an unlocked position at each of the cutting heights; the notch lock having a plurality of teeth; a height of cut support extending over the deck and between one of the front height of cut arms and one of the rear height of cut arms, and having a plate fastened to the height of cut support behind the slot in each height of cut arm; the plate having a plurality of teeth; and a lever to push the notch lock through the slot from the unlocked position to the locked position in which the teeth of the notch lock and the teeth of the plate engage each other, and to pull the notch lock through the slot from the locked position to the unlocked position in which the teeth disengage each other.