Hi ange, welcome to Outdoorking. At this point I'm not clear whether you are talking about the foot brake, the parking brake, or the cutter brake. The parking brake is a simple mechanism that locks the foot brake in the down position when you pull the lever. The cutter brake is entirely separate from the foot brake. Taking a guess that you mean the foot brake, this is the only diagram provided in the manual:
![[Linked Image]](https://www.outdoorking-forum.com.au/forum/uploads/usergals/2014/05/full-2772-16529-victa_3010t_brake_adjustment.png)
It seems to be a miniature disk brake operated by a lever and cam.
If this does not solve the problem, please post some pictures of the bits and where they go, so we can discuss it in more detail.