This is a 3-step procedure. It helps if you have $10K worth of hand tools plus very small hands for Step 1 which is a royal pain! The good news is that Step 1 rarely needs attention for the life of the clutch cable once it’s properly set. Before you begin, loosen the adjuster at the handlebar perch and screw the barrel all the way in. Also, loosen the lower adjuster locking nut (where the clutch cable enters the rear housing) and screw the adjustment barrel all the way in (this would be clockwise from above). You should now have lots of slack in your cable.