Kellys Hacker 50, Owner'S Manual

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owner‘s
manual
GB
4
WARNING
Before ride, make sure that the fork is turning easily, but without a loose, in the head set.
A-HEAD HEAD PARTS
Headset must be tightened properly. Check whether fork can turn easily in headset but without
allowance and if all stem screws are tightened securely before each ride. Follow these steps when
headset has allowance:
• release 2 Allen key screws on stem clamp which hold stem on fork‘s neck and loosen headset
screw (1) as well
• set headset allowance by loosening or tightening of headset screw so that fork will turn easily
but headset will not have allowance
• check if headset parts fit into each other properly and if fork‘s neck is embedded correctly in
headset
• tighten headset screw
• now set stem direction and tighten 2 Allen key screws on stem clamp - by making this headset
is secured.
WARNING
Check before ride, if the screws on the stem‘s body are firmly tightened.
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.
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:
MTB/CROSS
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.