There is a quick way to check if the self adjuster is working or not. Have someone lift the clutch pedal up and hold it. While it's up go pull the clutch release arm (where the end of the clutch cable connects) and pull it toward the front of the car an inch or so. Have the person helping you release the upwards tension on the clutch pedal while you are still holding the release arm an inch forward. You then can let go of the release arm and it will stay in that position if the adjuster isn't stripped, and you'll notice that the cable is loose. Go back and lift up on the clutch cable to take up the slack and you'll hear the adjuster click to the right spot.