Things You'll Need
Instructions
Set the bicycle upright on the floor and remove the bolts holding the post to the post tube. Ensure that the seat is securely tightened to the post.
Ask your assistant to help you hold the bicycle from the front wheels as you pull the seat up towards you.
Tighten the new seat onto the new seat post and insert it into the well-greased seat tube. Re-insert and tighten the screws that hold the seat post onto the seat tube as recommended.