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.

  • 3
    It has what's called a key chuck. Google that for instructions.
    – user6591
    Oct 28, 2016 at 10:16
  • Is this the manual for your drill? Oct 28, 2016 at 11:44
  • I agree with user6591, Sometimes if you have strong hands you can reverse the drill and holding the outer sleeve tap the trigger and it will open up. +
    – Ed Beal
    Oct 28, 2016 at 13:25
  • How do I remove a drill bit that is stuck due to an overtightened {keyless} chuck? Keyless or not, most of those suggestions apply.
    – Mazura
    Oct 28, 2016 at 19:20
  • The chuck key comment helped me. I just needed to know the direction and I found out that to open the drill bit, one needs to rotate the chuck key counterclockwise or the second method is to rotate the sleeve clockwise holding the head firm. I made multiple scratches on my drill machine using the wrench and everything, not knowing the direction .. But no worries - learning by doing. Oct 28, 2016 at 20:24

1 Answer 1


You may use your hands, a chuck key, or other means to loosen the chuck. See page two of the manual. Page 12 also mentions using the chuck key.


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