Come on you can do it, it's SO easy.
All you need to do is just pull on something to release the tension. Feed a belt, pull on something to slip it over and release.
Seriously it's just that easy.
It took me 15 seconds to remove the plastic cover, 10 seconds to remove the belt. 90 seconds to re feed the belt, check it over again and put tension back on, 15 seconds to run the engine and check. 15 seconds put plastic back together.
Quite literally a couple of minutes.