Truss Rod
The truss rod is easily accessible via the hole located on the bottom side of the headstock. To adjust the rod, use the Torx wrench supplied with your guitar. Turn it clockwise to tighten the rod and counterclockwise to loosen it. Be aware that the rod adjustment is very sensitive - one sixth turn yields a lot of adjustment.If you're unfamiliar with adjusting a truss rod, we strongly suggest that you take your instrument to your favorite guitar technician.
