Abstract: A chain saw guide bar mounting device for facilitating maintenance of a cutting chain includes a first plate that is configured to mount to a support structure. A second plate that is coupled to the first plate extends longitudinally from proximate to a first end of the first plate. Each of a pair of couplers coupled to the second plate is configured to couple to a respective penetration that is positioned in a guide bar of a chain saw. A bracket, which is slidably coupled to the first plate, is positioned between the second plate and a second end of the first plate. A second rod is selectively couplable to the bracket. A hub is axially positioned on and rotationally coupled to the second rod. The hub is positioned to rotationally couple to a cutting chain that is positioned on the guide bar to position the cutting chain for maintenance.