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How to Change a Flat Tire

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Separate the Valve Stem from the Rim

Remove the valve stem from the rim.

Remove the valve stem from the rim.

(c) David Fiedler, licensed to About.com

Next, you'll need to remove the valve stem from the rim. This is the metal valve that pokes through the rim used to inflate the tube. Coming from the center of the wheel by the spokes, locate the valve stem and push it up and through the hole in the rim so that it no longer protrudes through the rim.

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