Brake lever slacked

BlueTaylor
BlueTaylor Posts: 43
edited July 2014 in MTB workshop & tech
As the title says really, only thing is I'm a bit of a novice when it comes to things like this. I've read something about the adjuster on my brakes (avid elixir 1/juicy 3) that you click back the lever and adjust the bolt but I can't see 1? Any help please or should I be trying something else?

Thanks