How Do You Change A Flat Tire On A Bike?
Remove the bicycle wheel from the frame. Release the air if the tire is not flat. Insert the thin end of a tire lever between the tire and the rim. Pull the lever down, and clip the hook end to the nearest spoke. Move over two spokes, and repeat with a second tire lever. Move over two spokes more, and repeat with a third lever. Take the first lever out, move over two spokes from the third lever, and repeat. Work around one side of the wheel in this way until one side of the tire is free. When one side of the tire is completely off the rim, pull the other side off with your hands. Pull out the old tube with your hand and discard, or save it to patch later. Run a hand lightly over the inside of the tire to find the cause of the flat and remove it. With a bicycle pump, put one or two strokes of air into the new tube. Put the new tube in the tire. Find the hole in the rim for the inflation valve; this is the piece of metal attached to the rubber tube into which air is pumped. Pull the valv
