A little more detail. The above posts are correct. The center clamp has four plastic plugs that cover the allen head bolts. Here's how I do it. Put a towel or something similar on the tank to keep it from getting scratched. Completely loosen either top bolt and the bottom bolt diagonally across from it. Now slightly loosen the other bottom bolt. Finally, while holding the bars, loosen the last top bolt. Position the bars where you would like while sitting on the bike. According to the manual there is a punch mark on the bar that you align with the clamp. Now, snug up the bolts in the reverse order making sure the bar is centered under the clamp. Do the final tightening (again, according to the manual) by torquing the top two bolts to spec, then the bottom ones. This puts the clamp gap at the bottom, unseen. The torque setting is 25 n-m or 18 ft-lbs. The bolts should still have some locking agent on them. I always clean it off with a soft wire brush and apply new.