So I was changing my volume pod on my guitar (Yamaha RGX 121 ZL) and I've so far gotten as far as taking off the volume knob knob thingy. I wanted to make sure that I knew what I was doing, so I attempted to put it back on. It just kinda slipped on, it doesn't have the same feel to it when I turn it.

How can I fix this? Do I also need a new cap now?

1 Answer 1


Typically volume knobs have one of two types of fixings, one with a small grub screw that tightens into the side of the shaft, and one that just uses friction. Check on the side of the knob - if there is a screw, like these ones on axesrus.com, you can just tighten that up to make it sit securely on the shaft again.

enter image description here

If there isn't a screw, and the knob is loose, you have a couple of options. I would typically go for a very small dot of cyanoacrylate glue. This will hold the knob to the shaft, but when you need to remove it, you can lever it off with a screwdriver. An alternative is to use something like PTFE tape around the shaft to thicken it enough that the knob grips it.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.