Yamaha Full-Size Keyboard "remove french" Questions

...remove it yourself as it could get stuck worse and replacement parts for French horns are not cheap nor are they easy to obtain. If you do try removing it you risk bending the tubing out of alignment ...

...remove the broken one by pulling it horizontaly (use some force, it's broken anyway). Placing a new key you'll need to uplift the 'hammer' and then slide a new one. I'm sure you'll figure it out once ...