Giant momentum Anleitung Seite 28

Schraeder valve, depress the pin in the end of the valve stem with the end of a key or other appropriate object.
The Presta valve (fig. 20b) has a narrower diameter and is only found on bicycle tires. To inflate a Presta
valve tube using a Presta headed bicycle pump, remove the valve cap; unscrew (counterclockwise) the valve
stem lock nut; and push down on the valve stem to free it up. Then push the pump head on to the valve head,
and inflate. To inflate a Presta valve with a Schraeder pump fitting, you'll need a Presta adapter (available at
your bike shop) which screws on to the valve stem once you've freed up the valve. The adapter fits into the
Schraeder pump fitting. Close the valve after inflation. To let air out of a Presta valve, open up the valve stem
lock nut and depress the valve stem.
There is a third type of valve, which has a bottom similar to a Schrader and necks down to about the size of a
Presta. This is a Woods valve, also known as a "Dunlop" valve (fig. 20c). You can pump them up with a Presta
pump.
WARNING: We highly recommend that you carry a spare inner tube when you ride your bike. Patching
a tube is an emergency repair. If you do not apply the patch correctly or apply several patches, the tube
can fail, resulting in possible tube failure, which could cause you to lose control and fall. Replace a
patched tube as soon as possible.
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