Abstract: A fully powered, one man curb cutter is mounted as part of a special purpose trailer, for towing behind a vehicle to its location of use. A motorized and steerable fifth wheel is deployed downwardly from a retracted to an extended position, to raise the trailer tongue clear of the hitch, and is used to propel and steer the trailer into a desired position adjacent a curb to be sawed. A pair of nearside jacks may be deployed adjacent the curb to be sawn, in supporting relation with the saw, the trailer wheels being partially retracted in order to stabilize the system. Sequential adjustments to the trailer jacks and wheels permit setting the power driven saw to a desired angle, with the wheels then being fully retracted. The saw is driven directly from a motor carried inboard, which also powers the saw feed longitudinally along a track mounted on the chassis frame of the trailer.