Adjust the Headset on Mountain Bikes

"There are two fundamental types of headset. A threadless headset and a threaded headset. For this segment I am going to talk about adjusting your threadless headset. This particular bike has an internal headset there are other types of headsets, adjusting the bearing pre-load which is the most important thing is consistent across all of them. Put inside of the steer tube of this fork is the is a pre-load system. So these are just spacers that go over the fork. This black part right here is a component of the fork, the thing that absorbs all of your bumps and allows you to turn. The stem is clamped on top of that it, there is a spacer below it or two. This top cap threads in here this is wedged in. What that does is it pulls the headset down so that the bearings are properly pre-loaded. I have loosened these bolts as you can see there, loose enough that that one was about to fall out. As I pull this back I am going to make sure that everything is properly seated, that my bearings are down, that my seals are down. There we go we have everything properly seated. We are going to start by lightly threading on my pre - loaded cap just to make sure that everything is in place. Before I get real gun hoe in pre - loading it I need to step back and make sure all of my dust seals and all that sort of stuff is where they should be. Everything is clear down here, everything is clear up here."