Originally Posted by
Adam G.
Wow that park tool site goes way deep into instrutions. I just changed the stem on my bike and it seem much simpler than the park tool instructions. When I untighten the original stem the fork just dropped out, I put it back and tightened the new stem. I didn't really see any ballbearings or stuff like that.
You probably have a sealed bearing headset. The one they show on Park's site isn't.