Abstract: A brick and block wall repair device comprising: a chain saw blade formed in a planar configuration with a continuous outer edge including a slidable device, the blade being operatively coupled to the motor of a chain saw in the operative orientation, the blade having the appropriate height to fit within the mortar joints of a brick and block structure, the rotation mechanism of the motor causing the guide bar to revolve around the edge of the blade in the operative orientation; and a cutter chain consisting of at least one row of cutter teeth, each of the teeth having a linear first end and a tooth second end, the first end of each of the teeth being coupled to the chain saw blade, the chain having the appropriate width to fit within the mortar joints of a brick and block structure, the tooth second end having a rough surface to facilitate the severing of brick, block, mortar and the like.