I couldn't find a video on how to replace the rotor since mine didn't have a screw. There are a lot for replacing the rotor that has a screw. I wasn't sure if there was a threaded screw hole underneath the old one if I broke it off. Maybe it's possible to wiggle it off the same way without breaking all the plastic off. But anyways, that's how the original rotor stays on the shaft.
![](https://i.ytimg.com/vi/ALswzkbF164/maxresdefault.jpg)