Adjusting The Seatpost Cam Action Mechanism; Brakes - haibike XDURO Owner's Manual

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Riding with an improperly tightened
seatpost can allow the saddle to turn
or move and cause you to lose control
and fall. Therefore:
1. Ask your dealer to help you make
sure you know how to correctly clamp
your seatpost.
2. Understand and apply the correct
technique for clamping your seatpost.
3. Before you ride the bike, first check
that the seatpost is securely clamped.
Adjusting the seatpost cam
action mechanism
The action of the cam squeezes the
seat collar around the seatpost to hold the
seatpost securely in place. The amount of
clamping force is controlled by the tension
adjusting nut. Turning the tension adjusting
nut clockwise while keeping the cam lever
from rotating increases clamping force;
turning it counter-clockwise while keeping
the cam lever from rotating reduces clamp-
ing force. Less than half a turn of the ten-
sion adjusting nut can make the difference
between safe and unsafe clamping force.
The full force of the cam action is needed
to clamp the seatpost securely. Holding
the nut with one hand and turning the
lever like a wing nut with the other hand
until everything is as tight as you can
get it will not clamp the seatpost safely.
If you can fully close the cam lever with-
out wrapping your fingers around the
seatpost or a frame tube for leverage,
and the lever does not leave a clear
imprint in the palm of your hand, the
tension is insufficient. Open the lever;
turn the tension adjusting nut clockwise
a quarter turn; then try again.

Brakes

There are three general types of bicy-
cle brakes: rim brakes, which operate by
squeezing the wheel rim between two
brake pads; disc brakes, which operate
by squeezing a hub-mounted disc between
two brake pads; and internal hub brakes.
All three can be operated by way of a han-
dlebar mounted lever. On some models of
bicycle, the internal hub brake is operated
by pedaling backwards. This is called a
Coaster Brake.
 Riding with improperly adjusted
brakes, worn brake pads, or wheels
on which the rim wear mark is visible
is dangerous and can result in seri-
ous injury or death.
 Applying brakes too hard or too sud-
denly can lock up a wheel, which
could cause you to lose control and
fall. Sudden or excessive application
of the front brake may pitch the rider
over the handlebars, which may result
in serious injury or death.
 Some bicycle brakes, such as disc
brakes (fig. 4-5 ) and linear-pull brakes
(fig. 4-6 ), are extremely powerful. Take
Brakes
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