I think the correct procedure is to loosen both ends of the cable, turn the clutch adjuster clockwise until you feel tension, then back it off no more than an 1/8". Then adjust the cable at both ends.
However, before you do that pull apart the clutch liter mechanism and make sure that:
1: The adjuster cylinder is not cracked around the rim
2: The steel ball is in place
3: The clutch rod measures it's full 10 1/8"