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CAUTION: If you use a screwdriver or any tool other than a tire lever, you are likely to puncture the tube.
Check to make sure the tire is evenly seated around both sides of the rim and that the tube is inside the tire beads. Push the valve stem into the tire to make sure that its base is seated within the tire’s beads. Inflate the tube slowly to the recommended pressure (see Section 6.G), all the while checking to make sure that the tire beads stay seated in the rim. Screw down the valve stem locknut
WARNING: Riding your bicycle with a flat or underinflated tire can seriously damage the tire, tube, and bicycle, and can cause you to lose control and fall.
2. If you break a spoke:
A wheel with a loose or broken spoke is much weaker than a fully tensioned wheel. If you break a spoke while on a ride, you will have to ride home much more slowly and carefully because the weakened wheel could break additional spokes and become useless.
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