Nick asked: Check out this video demonstration on how to remove the external bearing cranks on a mountain bike. The best way to learn is to watch someone do it in my opinion.

Jack asked: How do I adjust the headset on my mountain bike?  I read that it's important to do but I have never done it and I don't know how. . . Learn how to adjust the headset on a mountain bike in this free online video on cycling maintenance. Adjusting the headset on your mountain bike is