Kellys Alpina MTB Manual De Instrucciones página 4

GB
owner'smanual
WARNING
Check before ride, if the screws on the stem's body are firmly tightened.
To maintain correct function of the head parts of your bicycle it is necessary to grease head parts
regularly (depending on your riding frequency) with appropriate greasing product. Certain skills are
required for proper disassembling, re-assembling and tightening of head parts to keep bearings
running smoothly therefore we recommend you to visit specialized service.
GEARING SYSTEM
Gearing system consists of shifting levers (shifting grips), shifting cables, front and rear derailleurs,
chainwheels, freewheel (cassette sprockets) and chain. System is set up by manufacturer so do not
make any gearing system adjustments until necessary. Shift gears only when pedaling forward. Never
shift using force! Functionality of the system depends mainly on an easy movement of cables in outer
casing and gear system (sprockets, chainwheels and chain). Keep gearing system clean! Lubricate
cables with teflon oil which protects cables against corrosion keeps them running smoothly and
prolongs their lifespan.
REAR DERAILLEUR
Rear derailleur shifts chain on rear sprockets and doing so changes transmission ratio between front
chainwheel and rear sprockets. Rear derailleur is controlled by right shifting lever (right shifting grip).
There is possibility of mistuning of derailleur system during operation:
• LOWER LIMIT ADJUSTMENT
Shift chain on the smallest sprocket. Release fixing screw which will release the control cable. Set the
guide pulley under the outer edge of the smallest sprocket by turning the top adjustment screw (H).
Insert the control cable into the groove under the fixing screw, stretch it (using pliers) and tighten
the screw.
• UPPER LIMIT ADJUSTMENT
Shift on the biggest sprocket. Set the guide pulley into the middle position under the biggest
sprocket by turning the low adjustment screw (L). Now try to shift the chain on all gears.
• REAR DERAILLEUR TUNING
Hold the rear wheel above the ground and turn with crank arms. Turn the adjustment bolt (an outer
casing with an inner cable crosses through this screw) on guide pulley until shifting is smooth
without disturbing sounds.
4
REAR DERAILLEUR
top adjustment screw (H)
low adjustment screw (L)
adjustment screw
guide pulley
IMPORTANT WARNING
Prior each ride check rear derailleur limits for correct adjustment. If upper limit is released, the guide pulley
could collide with spokes which can cause not only damage of wheel spokes, but also serious injury.
FRONT DERAILLEUR
Front derailleur changes transmission ratio by shifting chain on chainwheels. Chain guide must be
parallel to the chainwheels to operate properly. Front deraileur is controlled by left shifting lever (left
shifting grip). The control cable must be stretched.
There is a possibility that the control cable can be released and the front derailleur system can get
mistuned during operation:
• LOWER LIMIT ADJUSTMENT
If the chain falls down from the smallest chainring - the chain guide is too close to the bike frame.
Turn the lower limit set up screw clockwise.
• UPPER LIMIT ADJUSTMENT
If the chain falls down from the biggest chainring - the chain guide is too far from the bike frame.
Turn the top adjustment bolt counterclockwise. Check the proper setting by shifting the chain on all
gears.
MTB / CROSS
fixing screw