Instruction manual

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Tighten all screws to the specified torque, otherwise the screws could break
off and parts may become loose. (see chapter ‘Tightening torques of screws, nuts
and bolts’, page 45).
Checking the wheels
The wheels form the interface between bicycle and road. Unevenness of the road
surface and the weight of the rider place a great strain on the wheels.
The wheels are carefully checked and centred before delivery.
Despite this, the spokes will settle during the first 100 km of riding.
➢ After riding the first 100 km or so, have the wheels checked and, if necessary,
centred by a dealer.
➢ After this, check the tension of the spokes regularly and have loose or damaged
spokes replaced or centred by a dealer.
Checking the hubs
Tighten all screws to the specified torque, otherwise the screws could break
off and parts may become loose. (see chapter ‘Tightening torques of screws, nuts and
bolts’, page 45).
The wheel is fixed via the hub axle to the bicycle fork or the frame. The axle is faste-
ned by means of either a hexagonal (cap) nut or a quick release.
To check the hub bearings, proceed as follows:
➢ Lift up the wheel and turn it.
➢ Check that the wheel continues to turn a few times and then slows down
and stops.
➢ To check whether there is play in the hub bearing, try to move the wheel
backwards and forwards in the fork or chainstays.
➢ If you determine that there is play in the bearings, or if the wheel is hard to
turn, have the hub bearings adjusted by a dealer.
Checking the wheel rims
If you use wheel rim brakes, the wheel rim is subject to greater wear.
When a wheel rim is worn, the tyre air pressure can damage the wheel rim.
This can lead to serious accidents. As soon as you see any marks on the wheel rim
(grooves, coloured spots) or if an applied coloured ridge has worn off, replace the
wheel rim.
Bicycles from size 24“ upwards are fitted with a wheel rim wear indicator.
On the flanks of the wheel rim there is a line or groove which runs along the com-
plete circumference of the rim.
Checking the tyres and inner tubes
Tyres
There are many different types of tyre. The suitability for a particular type of terrain
and the roll resistance depend on the tyre tread.
Pump up the tyre only to the maximum permissible pressure, otherwise it may
burst. If the tyre pressure is too low, the tyre can loosen itself from the wheel rim. The
maximum permitted tyre pressure can be found on the side-wall of the tyre.
When changing tyres, use only tyres of the same type, size and tread, otherwise the
bicycle’s handling characteristics may be negatively affected.
This can lead to accidents.
Tyres are consumable parts. Check the tread depth, tyre pressure and side-wall
condition regularly. Replace worn tyres before using the bicycle again.
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