There seems to be a mantra amongst folk around here when talking about adjusting truss rods.
The abbreviated form seems to be "lefty loosey" which I gather means turn the truss rod to the left when looking down on it.
This irks me no end because it is simply wrong.
If we look at Fig. 1 above the allen key is in the truss rod and if we "turn the key to the left, it loosens.
BUT
If we now take the allen key out and place it in the truss rod nut as shown in Fig. 2 then turning it to the left will actually tighten it. We actually need to use the maxim "righty loosey" in this case.
As you can see the allen key is heading in the same direction, i.e. counter-clockwise, but at the top it is going to the right and on the bottom it is going to the left (On the left it is turning down and the right up.).
All very confusing, especially to a newcomer.
May I suggest clockwise and counter-clockwise?