Headset - RIESE & MULLER WORLD BIRDY Instruction Manual

HEADSET

The fork, stem, handlebars and front wheel
are able to rotate because of the headset
bearings. The headset must always move
easily. Large bumps or other changes can
cause the headset to loosen and develop
play.
DANGER!
Riding the bike when there is
play in the headset bearings
exposes the bearing and fork to
extremely high loads which can
lead to serious damage including
fork breakage!
ATTENTION!
Setting the headset requires certain
expertise. Therefore leave this work
to your dealer only.
CHECKING PLAY IN BEARINGS
• With the other hand, squeeze the front-
brake and rock the bike back and forth.
• If the bearing has play in it the upper shell
will move relative to the lower shell and
you'll detect this movement with your
finger.
• To ensure the smooth running of the
headset, grab the frame with one hand
and raise the front wheel off of the
ground. Rotate the handlebar through
its full range of motion. It should move
smoothly and without sticking through its
entire range of motion. If the handlebar is
released from your hand, it should auto-
matically return to the central position.
43