How to Replace Your Mountain Bike Headset Like a Pro
To change a headset on a mountain bike, you need to first loosen and remove the stem cap and bolt, then remove the stem from the fork steerer tube. Next, remove the crown race from the base of the fork. Install new bearings and grease the new set before sliding it down onto the steerer. Install the crown race and re-insert the steerer into the headtube. Finally, tighten the stem bolts and test the new headset for proper function.