Abstract: A mower deck carriage for mounting a mower deck on a vehicle such as a mower or tractor, including laterally aligned, spaced channels attached to the upper side of the mower deck, a suspension frame attached to the vehicle, the suspension frame supporting a plurality of laterally aligned, spaced rollers, the rollers received in the channels. The mower deck channels are laterally moveable along the spaced rollers. A spring attached between the mower deck and the vehicle biases the mower deck in a preferred position. A mower deck guard extends exterior of the mower deck. The roller guard, the channels, the rollers and the spring allow lateral movement of the mower deck upon encountering a fixed object such as a tree or fence post.