To clean your guitar, wipe it down with a clean, damp cotton cloth with water then a dry cotton cloth to dry. For polishing, we recommend using Martin Polish and Cleaner which is available for purchase online and in our 1833 Shop. We recommend this polish for gloss finish guitars but not satin finish. It will not harm satin finish guitars, though after time the finish may begin to shine unevenly. It is best to use just plain water on satin finish guitars.
Martin Guitar does not recommend using lemon oil on the fingerboard. The acids in lemon oil break down the finish of your guitar. It may also speed the corrosion of the frets and decrease the life of your strings.
We recommend that your guitar be taken to an authorized Martin service center to have adjustments made. Incorrect adjustments may cause damage and may affect your limited lifetime warranty.
The Two-Way Adjustable Neck Reinforcing Rod System is designed to correct both a hollow (concave) and a rounded (convex) fingerboard condition.