Operating instructions

Once you have found the desired position, tighten
the two bolts alternately and gradually by using a
torque wrench
(a) to the maximum torque value in-
dicated in Nm on the AX-Lightness and engage seat
post.
In the case of the cranked AX-Lightness and engage
seat posts, turn the bolt in the front either gradually
by hand
(b) or remove the AX-Lightness and engage
seat post from the frame and insert a long 5 mm Allen
key from the bottom and tighten the bolt.
Once the crossmember engages with the rail, pull the
saddle upward and tighten the bolt. Tighten the front
bolt by two to three turns more to lower the saddle
nose a little. Tighten the rear bolt subsequently by us-
ing the torque wrench to the recommended torque
value (c) which is noted on the seat post.
In case you are not sure about the correct torque val-
ue or you have no torque wrench at hand, ask your
AX-Lightness and engage dealer for help. Otherwise,
a too tight or too loose tightening of the bolts may
lead to premature wear or breakage of the AX-Light-
ness and engage component during the ride and
thus to an accident with possible injuries to the rider.
g
Check the secure clamping of the saddle
on the seat post by bringing your weight to
bear on it with your hands at either side of
the saddle (d). A loose saddle can lead to an
accident.
a
Never exceed the torque values recom-
mended by AX-Lightness and engage
which are indicated on the components.
I
Before removing the seat post (e.g. when
taking your bicycle along on a trip), mark
the saddle height by using e.g. an adhesive
strip. This will allow you to quickly nd your
preferred saddle height.
Rider-specific adjustments
Determination of the correct saddle height
The appropriate saddle height is a matter of how it
allows you to pedal. When pedalling, the ball of your
foot should be positioned above the centre of the
pedal axle (e).
With the pedal axle, as above described, below your
foot, you should not be able to stretch your leg com-
pletely at the lowest point, the farthest distance of
the pedal to the saddle, otherwise your pedalling
will become awkward and you will strain your knee
or other joints more than necessary. You can check
the height of your saddle in the following simple way.
Perform the check by wearing at-soled shoes. Sit on
the saddle and put one heel on the pedal at its low-
est point. Make sure your hips remain straight when
doing this. Your leg should be fully stretched in this
position (f).
I
For o-road riding it can be helpful to opt
for a lower saddle height. Note that over ex-
tended periods of pedalling a deeper sad-
dle height can result in knee pain. If your
knees or hip hurt, contact your AX-Light-
ness and engage dealer immediately.
g
Make particularly sure there is enough
space between your crotch and the top
tube (g) so that you do not hurt yourself, if
you have to get o your bicycle quickly.
118 119
Seat posts - Saddles
a
b
c
d
f
e
g