The Fender Telecaster is a staple in the world of guitar playing. Just about every popular country artist can be seen playing a Telecaster. When you throw this into a world where guitar modification and personalisation is booming, it's only fitting that one of the most prolific guitars in history would be on the top of many peoples list for personalisation. After all, the Fender Telecaster is actually a modified Fender Broadcaster at heart. A popular change has always been those barrel knobs that Fender has used for years. This may be due to how easy they are to change.
Locate the flathead set screw in the side of the volume knob. Using a small flat head screwdriver, turn the screw counter-clockwise until it has been completely removed from the knob. Lift the knob off of the potentiometer shaft.
Wipe off the electronic control mounting base plate with a cotton towel to remove any dust, sweat and grime that has accumulated over time. This is common due to the unique chrome plated metal plate that mounts a Telecaster's electronics.
Wrap a small amount of plumber's tape around the volume potentiometer shaft. Telecasters are single-coil guitars and can sometimes hum when you touch a metal knob. The plumbers tape will act as an insulator and prevent this problem. This step can be skipped if you do not have hum issues with your Telecaster.
Place replacement volume knob onto the potentiometer shaft. If your Telecaster has solid-shaft potentiometers, you should line the set screw up with the mark on the side of the shaft that was left by the previous knob. If your Telecaster has a split shaft, you should line the set screw up in the middle of the split to ensure the knob is properly aligned. If your new knob is numbered, you want to pay attention to orientation so the knob shows at 10 when turned all the way up. Once you have the knob orientated, tighten the set screw clockwise.
Many aftermarket volume knobs use Allen screws instead of flat head set screws. If purchased new, most come with the correct Allen wrench for you to use.