Originalbetriebsanleitung Allgemein EN-29
Fig. 31 Straight front stem,
angle-adjustable
Screw
Fork steerer
Fig. 32 Ahead front stem,
angle-adjustable
Screw
Fork steerer
Spacer
1. Loosen the screw by two or three turns using an Allen
key until you can adjust the angle of the front stem.
2. Tilt the front stem to the desired angle.
3. To secure the front stem, tighten the screw clockwise
to the specied torque using a torque wrench 13.
Tightening torques for threaded connections Page EN-19.
19.3 Adjusting the height of the handlebars
How to determine the optimal handlebar height for your
body size:
1. Sit on the saddle and at the same time, lean against
a wall.
2. Lean your upper body towards the handlebars until
you nd a position that is comfortable for your back.
3. Extend your arms towards the handlebars.
4. Make a note of the approximate position of your hands
so that you can adjust the handlebars to this height.
19.3.1 Straight front stems: adjusting the
height of the handlebars
Warning
Serious falls due to a detaching, bending or breaking
front stem.
▪ The front stem is marked with the maximum distance
that it can be drawn out of the fork steerer. Never
pull the seat post further out of the fork steerer than
the marking. If you cannot nd any marking, insert
the front stem to a depth of at least 6.5 cm in the
fork steerer.
1. Loosen the front stem spindle by turning it two or
three turns counterclockwise with an Allen key. To
prevent the bicycle fork from moving when loosening
the front stem spindle, grip the front wheel with your
knees.
Fig. 33 Front stem spindle
2. Take hold of the handlebars by the grips and turn them
alternately to the left and right. If this is not possible,
strike the front stem spindle gently from above with
a plastic hammer until the clamping device inside the
front stem releases.
3. Draw the front stem out of the fork steerer tube to the
desired height, but not higher than permitted.
4. Align the front stem with the front wheel so that they
form a right angle.
5. To secure the front stem again, tighten the front stem
spindle clockwise to the specied torque using a
torque wrench 13. Tightening torques for threaded
connections Page EN-19.
19.3.2 Ahead front stems: adjusting the
height of the handlebars
For Ahead front stems, any adjustment to the height of the
handlebars must be made by a specialist workshop.
19.4 Cleaning and care
The handlebars and front stem can be easily cleaned with a
slightly damp cloth.
20. Adjusting the position of the position
of the handlebar grips
The handlebar grips are tted to the ends of the bicycle
handlebars. They aect riding comfort and your health.
If your hands or wrists hurt after longer rides, it makes
sense to change the position of, or replace, the handlebar
grips. To replace the grips, contact your specialist
workshop. Models are available with and without threaded
connections. Grips with no threaded connection cannot be
easily adjusted, as they usually clamp very rmly onto the
ends of the handlebars. You should also contact a specialist
workshop about this, as attempting to change the position
of the grips can damage them. Screw grips are secured to
the handlebar with screws on the inside and outside, which
can be used to adjust the grips.
Fig. 34a Internal clamping
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