Operation Manual

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15. Faults When Riding
WARNING
Danger from falls and accidents
Incorrectly performed troubleshooting can lead to dangerous riding situations, falls and accidents.
• You should only carry out work to your bike which you are permitted to perform according to the follow-
ing table.
Contact a specialist bicycle workshop if the work that you have carried out is not successful.
• Have all other work carried out by a specialist bicycle workshop.
• You should contact your specialist bicycle dealer immediately if the riding behaviour of your bike does not
appear to be normal, if you can hear unusual noises or if you notice any malfunctions which are not listed
in the following table.
15.1 Gear shift, drive
Malfunction Possible cause(s) Remedy
Gears do not change
or do not change
smoothly
Shift lever not actuated
correctly
Actuate the lever again
Shift mechanism malad-
justed
Contact your specialist bicycle dealer.
• In the case of steep
inclinations, excessive
pressure on the pedal
• and/or pedalling move-
ment too slow
Repeat the gear shifting procedure on flat
terrain.
Changing gear while stationary:
• Lift the rear wheel.
• Turn the crank in the drive direction until
the desired gear is engaged.
Drive blocks during or
after gear shifting
Chain jamming Leave the bike where it is.
Actuate the gear lever in the opposite direc-
tion.
Lift the rear wheel; if the following is possi-
ble without the use of force:
turn the crank against the drive direction.
NOTE:
Under no circumstances should you apply force
if the crank cannot be easily turned.
Contact your specialist bicycle workshop im-
mediately.
Unusual noise such as
cracking, loud grinding
and/or banging
Drive/gearing compo-
nents damaged
Contact your specialist bicycle dealer imme-
diately.
Irregular resistance
during the pedal
movements
Drive/gearing compo-
nents damaged
15.2 Brakes
WARNING Danger from falls and accidents
The brakes on your bike are among the most important components for your riding safety.
Failing brakes always lead to dangerous riding situations, falls and accidents.
A brake malfunction is a serious danger to safety.
• Contact your specialist bicycle dealer immediately if you notice the slightest malfunction or a deteriora-
tion in the braking effect.
• You should only use your bike again when it has been properly repaired by the specialist bicycle dealer.
Chain jumped off
sprocket
• Incorrect operation of
the gearshift
• Maladjusted or dam-
aged gear shift mecha-
nism
• Leave the bike where it is.
• Lift the chain onto the next sprocket by
hand.
• Lift the rear wheel,
• if the following is possible without force:
• turn the crank in the drive direction.
NOTE:
Under no circumstances should you apply force
if the crank cannot be turned easily or if you do
not have the strength to lift the back wheel.
Contact your specialist bicycle dealer imme-
diately.
Chain jumped off
during or after gear
shifting
• Incorrect operation of
the gearshift
• Maladjusted or dam-
aged gear shift mecha-
nism
• Leave the bike where it is.
• Actuate the gear lever in the opposite
direction.
• Lift the chain onto the next sprocket by
hand.
• Lift the rear wheel,
• if the following is possible without force:
• turn the crank in the drive direction.
NOTE:
Under no circumstances should you apply force
if the crank cannot be easily turned.
Contact your specialist bicycle dealer imme-
diately.
Chain jumps off re-
peatedly
• Repeated incorrect op-
eration of the gearshift
• Maladjusted or dam-
aged gear shift mecha-
nism
Operate the gearshift correctly, see section
8.4, Operating the gear shift.
Contact your specialist workshop immediate-
ly if the fault occurs when you change gear
correctly.
Malfunction Possible cause(s) Remedy