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- 1). Place the tire on top of the tire machine and tighten down the center nut to hold the tire and ruim in place.
- 2). Lift the bead breaker arm and place it next to the edge where the rim meets the rubber on the tire.
- 3). Insert the valve stem remover and turn it to the left to remove the valve stem, or valve core, and allow all the air to drain out.
- 4). Press the control pedal on the tire machine in order to break the seal.
- 5). Cut the old valve holder fitting with a razor and pull the rest of if out of the rim with the needle-nose pliers.
- 6). Slide the new valve holder fitting into the hole in the rim from the under side and pull it up and through until the grooved base seats itself tightly.
- 7). Place the air hose onto the new valve holder fitting and press the air pedal until the tire fills and forms a sealed bead on the rim.
- 8). Remove the tire from the tire changing machine.
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