Kellys Hacker 50, Owner'S Manual

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owner‘s
manual
GB
7
DISC BRAKE CLEANING
Disc brake rotor, pads and brakes must be kept clean. Grime rotor by oil or by other lubricant must be
cleaned immediately e.g. by benzin. When disc brake pads are impure by brake fluid it is necessary
replace them by new one.
IMPORTANT WARNING
1. Check before each ride if disc brake system is working perfectly. Press few times brake
lever and check if brake system works really properly.
2. Check regularly if all braking system screws are tight securely. Released screws could
cause braking system failure.
3. Disc brake rotor and caliper are heated up by braking. Do not touch them immediately
after braking, hot parts could cause skin burns.
4. Learn use disc brake system properly. Too much intense braking by front brake could cause
downfall and injury. Serious injuries could occur when disc brakes are not set up properly or they
are not used properly.
FRONT AND REAR WHEEL
Prior each ride check if the wheel is securely fastened by quick release lever i.e. quick release
lever must be in position „CLOSE“.
Quick release lever enables fast toolless wheel disassemble
and assemble. Before ride check if wheel is centred in the fork. Tighten quick release nut so much
that lever will put up resistance when closing. When quick release system is closed to the secured
position it must push closer both fork ends.
Move quick release lever only to the sides to reach
its position OPEN or CLOSE. Never turn closed quick release system it could be damaged!
If wheels are secured by end nuts they must be checked before each ride to be sure that wheels
are secured correctly.
Torque tightening values:
M10 nut of hub axle 30 - 40 Nm
Check the wheel hubs periodically mainly after ride in wet and muddy conditions. The hub axle
should rotate without any friction and loose. If it does not, even after axle‘s cones and safety nut
adjustment, it is necessary to disassemble the hub, clean bearing rings and balls, lubricate them
with a new grease, assemble and set the hub again. If you are not skilled enough to do this kind of
maintenance we advise you to contact a special bike service.
RIMS
Check before each ride if wheels are centred correctly and rims are not damaged. There could
appear grooves and cracks by using bicycle or they could be caused by blast. Side areas of rim are
getting worn up by braking. There is security system on each rim side which indicates deformation
on side of rim. Bent side area of rim is mark of wear which causes self-acting braking. Riding on
bicycle with such damaged rims is dangerous and damaged rim must be replaced!
TIRES
Never ride on over or under inflated tires. Respect recommended pressures, which are shown on
sides of each tire.
Calculation of pressure measurement units mentioned on tires: 100kPa = 14.22 P.S.I. = 1 bar = 1 at
In case of puncture replace always damaged tube by new one with the same parameters like the
old one. Parameters are marked on each tube or on sides of tire.
FRAME AND FORK
Check regulary if the frame and fork of your bike are not damaged. Damage of the frame or fork is
mainly caused by accidents and falls. Stop using such damaged frame or fork, otherwise you risk
serious injury!
CARBON COMPOSITE FRAME
Carbon composite bike frame has excellent driving quality, high rigidity, low weight and vibration
absorption. Overloading or strong stroke could cause damages (cracks) of carbon structure.
WARNING
Bike frame made of composite materials have higher fatigue life when used properly than
the one made of metal materials. It is necessary to check regularly frame and fork mainly
after any stroke or accident. Stop use carbon frame or fork immediately after finding any
cracks!
Be careful when mounting components on composite frame mainly when tightening seatpost
clamp screw or front derailleur clamp screw. Keep recommended torque tightening values!
Recommended torque tightening values for frame components made of carbon composite:
Screw M4 - seatpost clamp screw 4,5 Nm
Screw M5 - front derailleur clamp screw 6 Nm
WARNING
Seatpost clamp screw must be securely tightened so the seatpost is not turnable inside the frame.
It is recommended to use special mounting paste for carbon components when seatpost screw is
tighten properly according recommended torque tightening values and even though is seatpost
inserting inside frame tube. This special paste contains micro granules which increase friction and
enable use 30% lower torque tightening value and thereby prevent component damages.
When workstand is used to hold bike during maintenance never fix bicycle by pressing bike frame
- this can cause cracks.
It is recommended to let cycle service provide maintenance which requires use of special tools.
MTB/CROSS