21
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In the case of bicycles with adjust-
able dropouts, the mounting screws 
of the axle housing should be loos-
ened and tightened, and not the axle nuts. If 
the bottom bracket shell contains an eccentric 
bush , please tighten the chain according to 
the instructions provided by the correspond-
ing manufacturer.
Please ensure that axle nuts and 
boosters are correctly attached!
Dirt and permanent strain wear the 
chain. The chain should be replaced 
as soon as it can be signicantly lift-
ed (approx. 5 mm) from the front chain ring. 
Many modern chains for derailleur gear sys-
tems no longer have chain connectors. You 
therefore require specialist tools to open/
change/close them. This work should be car-
ried 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.
* see page 34
2
10-15 mm
3
1
If your bicycle comes equipped with 
a converter, which makes it possible 
to operate hydraulic brakes with me-
chanical brake levers, read the attached com-
ponent manufacturer’s operating instructions 
before using it.
Belt drive