Provided herein are means and method to convert a lawn line trimmer into a lightweight and rugged four-wheeled lawn mower of adjustable height to mow grass evenly, which provide further for a hold-down member and forward cam members fixed on the base face to easily lock virtually any line trimmer by its protective shroud onto a base having either a horseshoe shaped cutout opening or a centrally located circular cutout opening, wherein the trimmers rotating shaft and lines are centered further provided is a hinged support bar member that further connects the present assembly at the line trimmer handle.
