Adjust Shimano Dura Ace 9000 Hubs:
Before getting specifically into Shimano Dura Ace Hubs, it is important to understand how to adjust a typical cup or cone hub. With this hub, you have a threaded axel with a cup/cone and locknut to hold it in place. To adjust the cone, you first need to loosen the locknut. Use a cone wrench to hold the cone and an open end wrench to loosen the locknut. Then, very lightly tighten down the cone until you feel it contact the ball bearings. Tighten down the locknut by hand onto the cone.