Unscrew the knurled screw on the adjusting axis anti-clockwise until the clamping ball comes off.
Now press the strings against the clamping ball. Under pressure, it recedes. You can now put the guitar string through the adjusting axis.
Screw the knurled screw clockwise until it is hand tight. The string is now secured by the clamping ball.
Now you can tune your strings.
Now featuring a metric thread and a specially developed screw locking device, so you don`t lose the screw anymore!
When loosening the screws, turn them anticlockwise until the string is tightened into position.
When removing the connecing screws completely from the shafts, simply take the connecting screw out of the shaft at threshold resistance.
The Schaller M6 Toplocking with fine pitch thread and pull-off locking screw
Fine Pitch Thread for better locking adjustment
Our new Toplocking screw with fine pitch thread allows the screw to be turned more precisely and the locking torque to be adjusted more accurately.
New pull-off mechanism that makes pulling off as easy as putting back on
To prevent the toplocking screw from coming off and getting lost in the process of string changing we designed a new mechanism keeping the loosened screw in place even when it is completely unfastened.
To remove the Toplocking screw entirely from the string post just pull it off firmly. To put the screw back on just turn clockwise and tighten lightly.
