Lee,
Usually, you just need to tighten the cable. If the cable is really loose, you'll need to make an adjustment near the "primary" but if it just needs a small adjustment you can adjust it at the clutch handle. The specs are in the owners manual. Basically, you just want to screw out the adjuster at the handle to make the housing "longer". This will take the slack out of the cable. Hope this makes sense.
-Don
