I have a HD 400 Hammer drill from Black and Decker and I have no idea how to take out the drill bit. The drill has from the top the drill bit, then I guess its called a head and then a base on which the head is mounted and then the plastic body with all the buttons etc. What do I have to do to take out the drill bit? What should be rotated in what direction? Heres a picture of the drill machine https://www.youtube.com/watch?v=gzxuGu7rBIw
I dont want to screw up my drill or tighten the already jammed drill bit.