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Over time, the chain gets worn and it is necessary to replace it. If you do not replace the chain in a timely
manner, a damage to the chainring or the sprocket-wheel might occur (teeth deformation). It is important
that you let a qualified professional measure the chain regularly, ideally every 700
– 1000 km.
If you want access to the chain, you must remove its cover. With some models, it is necessary to remove
the right pedal or crank as well, in order to remove it.
SHOCK ABSORBER WITH STEEL SPRING
Turn the grooved ring left until the spring is released and then push the spring in. If the ring cannot be
moved, grab the spring with your hand and turn it along with the ring.
Turn the adjusting ring again, this time one turn right
– this way you’ll tighten the spring. Maximum
tension is reached after 4
– 6 turns from this point. If you turn the adjusting ring to this point, the spring
coils will touch, which can damage the rear shock-
absorber or it’s dropout. If you want to increase the
spring tension, turn the adjusting ring right.
Adjust the spring tension so that after sitting on the saddle the decline will be 10
– 30% of total spring
rate.
To determine the total spring rate, measure the distance between the center of the rear wheel quick
release hub and the lower side of the saddle. If the shock-absorber gives more than 1/3 of the total
spring rate after sitting down even after tightening the spring with 6 turns, you need to use a spring with
higher density. While replacing the spring, keep in mind that the length of the spring needs to be adjusted
to the total rear shock absorber suspension.
TIRES
INFLATING THE TIRES
The tires are inflated through a valve (which can be used to release air also). The most common valves
are the Shreder and Presta valves. Choose the pressure gauge adapter according to the valve type.
Shreder valves
are used mainly on car tires. It is necessary to
unscrew the valve cap first and connect then connect the valve
with a tube or a pressure gauge adapter. To release the air, press
on the pin inside the valve. To press the pin, use a key or
something similar.
Schreder
Presta valves
have a smaller diameter and can be found
especially in tubeless tires. To inflate tires with the Presta valve
follow these instructions: Unscrew the valve cap, release the
safety on the valve end (screw anti-clockwise) and press the valve
to make sure it is free. Attach the air pump and start pumping.
If you use a compressor on a gas station: Attach a tube with Presta
type adapter (the tube can be bought in any bicycle store). Attach
the other end of the tube to the compressor.
To release air from the tire, release the safety and press on the
valve.
After inflating the tire, do not forget to tighten the safety again.
Presta
TIRE REPLACEMENT
1. Release air from the tire: Press on the pin inside the valve.