Made Bloomsbury 7 Speed City Bike Series, Руководство пользователя

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The Schrader valve is similar to the valve on a car tyre.
This is the type of valve stem you should have on your
bicycle. To inflate a tyre with a Schrader valve, remove
the valve cap and push the air hose or pump onto the
end of the valve stem. To let air out of a Schrader valve,
depress the pin in the end of the valve stem using a key
or other appropriate object.
Your bicycle pump should match the tyre valve on your
bicycle.
Fixing a flat tyre:
In an event of a flat tyre and you need to repair the tyre,
follow the steps below.
1. Remove the wheel.
2. Deflate the tyre completely via the valve. Loosen
the tyre bead by pushing it inward all around.
3. Press one side of the tyre bead up over the edge
of the rim to unset the bead. CAUTION: In order to
avoid damaging the rim, use tyre levers and not a
screwdriver.
4. Remove the tube, leave the tyre on the rim.
5. Locate and patch the leaks using a tube repair kit
or replace the tube entirely. NOTE: Use a replace-
ment tube with a size and valve that is the correct
type for your bicycle.
6. Locate the possible cause of the leak by matching
the position of the leak in the tube with the tyre.
7. Remove the tyre completely and inspect for a nail,
glass, thorn, etc., and remove them. Also inspect
the inside of the rim to ensure there are no protrud-
1
2
1. Schrader valve
2. Presta Valve
Tyre treads
Some special high-performance tyres have unidirec-
tional treads: their tread pattern is designed to work
better in one direction than in the other. The sidewall
marking of a unidirectional tyre will have an arrow
showing the correct rotation direction. If your bicycle
has unidirectional tyres, be sure that they are mounted
to rotate in the correct direction.
Tyre valves
The tyre valve allows air to enter the tyre’s inner tube
under pressure, but doesn’t let it back out unless you
want it to.
There are primarily two kinds of bicycle tube valves:
The Schrader Valve and the Presta Valve (see figure).