If your pegs have screws connecting them to the tuning mechanism, this video may help you.
So, I turned the peg but I couldn't tune the string. It just went round and round never changing the pitch of the string.
After some trouble shooting, I determined that the little rubber peg was the problem, not the tuning machine it was meant to operate.
There is a screw on the top of the peg that connects the peg to the tuning machine. If you turn the screw too tightly you can destroy the peg, which is what I must have done.
Repair tip: Rather than try to remove or replace the entire tuner, I'd suggest try another peg from your ukulele in place of the bad one and see if the peg is the problem. This should take just a couple of minutes and should be very easy to do. If the different peg works, then you can look to find a replacement peg. That beats having to replace the whole tuner.
![](https://s2.save4k.ru/pic/5Rb-L0zffag/maxresdefault.jpg)