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SPROCKET-WHEEL/CHAIN
Maintenance:
The chain must be correctly strung. If the chain is too
tight, the pedalling will be more difficult. If the chain is too loose, it
will fall off the sprocket-wheel.
WARNING!
You cannot ride a bike with fallen chain.
Correct chain tension (1): The range of movement of the chain in
regards to the straight line (3) should be 1.27 cm (2).
TIRES
Check the air pressure in the tires regularly, because over time the air escapes in small amounts. If the
bike is in storage for a longer time, it shouldn’t stand on wheels.
WARNING!
Do not use the bike if the rear or front wheel is not properly inflated. You could damage the
tube. Do not use a compressor without pressure gauge. You may over pressurize the tube/tire and
cause it to rupture.
Use either manual or foot air pump. Only use a compressor if it has a pressure gauge. The
recommended pressure can be found on the side of the tires.
Before inflating a tire, make sure that the distance between the tire bead and the rim is the same
everywhere. If the tire is not inserted correctly, let air out of the tube to easily insert the tire bead to the
problematic part of the rim. Often check the pressure and the position of the tire during inflating. The
pressure in the tire should correspond with the value marked on the side of the tire.
If the tire is worn
or damaged, replace it immediately.
WHEELS
Checking the wheel condition:
Try to keep both wheels in good shape. Good maintenance affects the
brake efficiency and bike safety and stability. Be careful during the following instances:
Dirty or oily rims
Important:
The brake system
’s effectivity is compromised. Do not use wax- and oil-based
cleaning products. Clean the rims with a clean cloth and soap water, then wash them with water
and let them dry. Do not use the bike until the rims are completely dry. Be careful not to
accidentally get lubricant onto the rims.
Rim deformation
Check the rim condition:
Lift the wheel up, make it spin and watch if it diverges. In case of
deformation, it is recommended to take the bike to an authorized service.
Lost or broken spoke
Make sure that all the spokes are tightened and none are damaged or missing.
Important:
If you ride with damaged/missing spokes, you can lose balance and fall. It is
recommended to take the bike to an authorized service.
Loose headset bearing
Check the bearings condition. Lift the wheel up and try to move it sideways.
Important:
If the fork moves inside the headset, it is necessary to set it properly before ride.
Loose nut
Makes sure all the nuts are secure before every ride.
BEARINGS
Maintenance:
Check the bearings regularly. Bearings lubrication and maintenance should be carried
out only by qualified professionals at least once a year or in case of any problems with the bearings.