If you do need to adjust the rod you follow the same basic method. If the neck is bowed too much, tighten the rod. If it has a hump that is causing strings to buzz, loosen the rod. If everything is working as it should and there are no major problems with the neck, you will not need to tighten the neck as much as 1/16th of the turn. Just apply enough force to make the nut move and keep checking the neck.

A truss rod is not designed to fix neck problems. It's only job is to balance the pull of the strings. If you tighten or loosen the rod and the banjo still is very hard to fret or it buzzes a lot seek professional help. For setup purposes the ability to monitor the neck and make seasonal corrections using the truss rod is a very handy thing to be able to do. A slight problem here can have a big impact on the overall sound and playability of the banjo.

Here are some things to keep in mind before really trying to adjust your truss rod:

1. Loosening the rod is much safer than tightening it.
2. Don't try to turn the nut more than the smallest amount without checking the results. This applies to both loosenig and tightening.
3. If the nut won't turn without applying a lot of force, STOP!
4. If tightening or loosening the nut doesn't fix the problem with the neck, take the banjo to a qualified repair person.