Also pull off the hose at the other end.
Pull off the shovel. It's clipped at top. It's very flexible.
For this guide I have chosen a allready cleaned brew group. When you maintenance this, it will be very greasey and everywhere will coffee crumbs skip away. Take some Paper-towels to work on. For degrease take Toothpick, Toothbrush and Degrease-spray.