Operating instructions
In the case of road racing bicycle brake lever/shifter
units (Dual Control, Ergopower or DoubleTap) dis-
mount the clamp completely from the unit
(a).
Carefully slide the clamp on the handlebars
(b) and
subsequently re-mount the unit to the clamp.
Start tightening the clamping bolts slightly, so that
the unit can still rotate freely. Bring the brake lever/
shifter units to the desired position.
As soon as the unit is in the desired position, apply
some AX-Lightness carbon assembly paste in the area
of the clamping.
Tighten the bolts just enough to secure the brake
lever/shifter units
(c+d). Be sure not to exceed the
prescribed torque value, as the brake levers will oth-
erwise damage the AX-Lightness and engage han-
dlebars.
Never rotate the units on the handlebars after you
have tightened the clamping bolts. Otherwise you
will scratch the surface and mar the nish. In addition
you run the risk of damaging the material.
g
Never shorten AX-Lightness and engage
mountain bike handlebars by cutting o
the ends, as the handlebars are general-
ly reinforced in the clamping areas of the
shift/brake lever units. In addition, you
would cut o the bar end reinforcements.
These reinforcements are designed to with-
stand the forces occurring in these areas.
i
Read through the user manuals of all com-
ponents of the other manufacturers before
you follow the above instructions.
g
Do not shorten AX-Lightness and engage
handlebars, as this would damage the han-
dlebars and result in a severe accident dur-
ing use. Any modication to an AX-Light-
ness and engage carbon component will
void the warranty.
Adjusting the Aheadset
®
-headset
Adjusting the headset is a job for a skilled bicycle me-
chanic. Have this work solely done by an authorized
AX-Lightness and engage dealer. If you intend to do
the adjustment on your own, read the chapter “Fork
– Headset” or the user manual of the headset manu-
facturer rst and note that you need special tools, e.g
a high-quality torque wrench.
Release the clamping bolts on the side of the
AX-Lightness and engage stem by two to three turns
(e) without unscrewing them entirely.
The Allen bolt located in the top cap is intended to
re-adjust the bearing play (f). Turning the bolt clock-
wise removes play, as the stem is pressed downward
on the bearing; turning the bolt anticlockwise in-
creases the play. In case there is bearing play, tighten
the adjusting bolt by another quarter or half a turn.
Check the headset for play (g) as described in the
general user manual of your bicycle. Do not over-
tighten the headset; otherwise there is the risk of
headset failure.
Do not overtighten the top Allen bolt. It is intended
for adjustment! Tighten the bolt carefully in quar-
ter-turns and check the play regularly.
Once the play is properly adjusted, align the AX-Light-
ness and engage stem in the direction of motion.
Check the alignment of frame and stem with the
front wheel from the top (h). The AX-Lightness and
engage handlebars should be at right angle to the
direction of motion.
92 93
Handlebars - Stem
a
b
c
d h
g
f
e