Very simple & easy. For the wheels, I just popped the 2 old ones off with a screwdriver, and popped the new ones on.
Same with the 2 clip tines, very simple and easy. Just pulled the old ones off, and slipped on the new ones.
The total job took less than 5 minutes from start to finish.
Even though it was simple and easy, I still watched the videos on both.....because, why would I not watch them? Knowledge and learning is always a great thing, and I'm always looking for tips, clues, and smart shortcuts.