Genesis Children's bike, Оригинальное руководство пользователя

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26 * see page 40
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Dirt and permanent strain wear the
chain. The chain should be replaced
as soon as it can be significantly lifted
(approx. 5 mm) from the front chain ring. Many
modern chains for derailleur gear systems no
longer have chain connectors. You therefore
require specialist tools to open/change/close
them. This work should be carried out by a
specialist retailer.
Other chains are supplied/assembled with
chain connectors. In some cases, these can
be opened without the need for tools. These
chain connectors can also be used to repair
a damaged chain on a ride, if they have the
correct width for the drive train.
If your bicycle is equipped with a
belt drive, please read the attached
component manufacturer’s operating
instructions before first use.
Belt drive
Wheels
Check wheels
It is the wheels that connect the bike to the
ground. The wheels are subject to a great deal of
strain through the uneven characteristics of the
ground and the weight of the rider.
Before shipping, thorough checks and centring
works are performed on the wheels. The spokes
bed in, however, during the first kilometres of cy -
cling.
• After the first 100 kilometres, the wheels must
be checked by a specialist and re-centred if
necessary.
• The tension of the spokes must be checked
at regular intervals. Loose or damaged spokes
have to be replaced or centred by a specialist
retailer.
All screw connections have to be
tightened with the correct torque. If
the torque is not correct, the screws
may break or loosen other parts (see page 40
“Torques for screwed connections”).
Check hubs
The hub bearings are checked as follows:
• Lift the wheel off the ground by raising the front
of the bike to start off with and then lift the rear.
Push each wheel so they start spinning.
• The wheel should continue to spin before slow-
ing down at a consistent speed. If the wheel
suddenly stops then the bearing is faulty. Front
wheels with a hub dynamo are an exception to
this. These wheels display a higher degree of
resistance. It is barely noticeable while cycling,
but during the test you will notice it.
• The hub bearing is allowed no leeway. Pull the
wheel to the right and left in its forks or in the
chain stays to see whether or not it is loose.
There should be no leeway noticeable.
• If the wheel is able to be moved even slightly
in its bearings or if it is difficult to spin, the hub
bearings have to be set up by a specialist re-
tailer.
The wheels can be fixed in the frame and fork in
various ways. Usually, the wheel is attached with
an axle nut or a quick release. As well as this,
there are various quick release axle connections
which are screwed in or fixed with various quick
release systems. If your bike is equipped with a
quick release axle, you can find more information
in the chapter “Quick Releases”, the enclosed
manufacturer’s instruction manual or on the cor-
responding manufacturer’s website.