INSTALLING THE TUNING KEYS
1. Unpack the tuners. You should have six tuners, six hexagonal sleeves, six washers and six screws. Insert a tuner throught the back of the headstock and, while holding it in place with one hand, from the front of the headstock add a washer, and then screw on one of the hexagonal sleeves. Leave it just finger tight and then repeat the process with the other five tuners.
2. Using a nut driver screw the hexagonal sleeves on to the tuners but do not tighten them. (They may still need to be moved when you align the tuners)
3. Use a straight edge to make sure the tuners are all properly aligned and that they do turn properly without snagging each other.
4. At this point pre-drill the screw holes for the tuners using a 1/16" drill bit. The screws are 1/2" long so drill only to a depth of 1/4". Insert the screws, turn the guitar over, and tighten the hexagonal sleeves with a nut driver.