Originally Posted by BigErn

You'll need a mate to help you. The way I used to do it is get the car up so you can get in under it with a bar. One person fully press the clutch, once the clutch is down and held on the floor then the other person needs to get under the car and get a bar in to hold the clutch arm in the position it is in when pressed. Once the arm is held in place then the person in the car slowly brings the pedal back up. As the pedal comes back up it will get to a point then start to click. The clicking is the ratched adjusting. Let it click twice then press the pedal back to the floor. Remove bar and give the car a drive to see if its made any difference. Repeat as needed.

If you adjust it too far then give the pedal an upwars tug and it should effectively reset the ratchet mech, press the pedal a couple of times and it'll self adjust to where it was before you started.

Worth a try before you pull the gearbox out.