51
e
f
g
h
Adjusting the limit stops
The rear derailleur is equipped with limit screws
(d)
which limit the movement range of the derailleur, thus
preventing the derailleur and chain from colliding with
the spokes or the chain from dropping off the small-
est sprocket. The limit screws are adjusted by your
CENTURION dealer. They do not alter their position
during normal use.
If your CENTURION road bike fell over to the chain
side or if you mount another wheel, it is imperative
that you check the limit stops.
Shift with the right shift lever to the highest gear. The
inner cable is relaxed and the chain running on the
smallest sprocket. Look from the rear of the bike
at the cassette and check whether the teeth of the
smallest sprocket and the teeth of the top guide pul-
ley are all in a perfectly vertical line. If necessary, cor-
rect the position by means of the limit screws
(e)
. The
limit screws on rear derailleurs are often marked “H”
for high gear and “L” for low gear. “High gear” means
that the chain is running on the smallest sprocket.
If the screws are not marked, you will have to find out
by trial and error. Turn one of the bolts, counting the
number of turns, and watch the rear derailleur. If it
does not move, you are turning the wrong one. Turn
back the counted rotations to find its original position.
Turn the screw clockwise to shift the rear derailleur
towards the wheel and counterclockwise to shift it
away from the wheel.
Shift carefully to the largest (inmost) sprocket
(f)
and
check whether the teeth of the sprocket and the
teeth of the guide pulley are all in a perfectly vertical
line. Turn the limit screw marked “L” clockwise until
the rear derailleur stops moving towards the spokes
and can neither be moved by actuating the shift lever
nor by pushing it with your hand
(g)
. Carefully turn
the cranks while checking.
This adjustment prevents the chain from getting
stuck between sprocket and spokes or the rear
derailleur or the derailleur cage from touching the
spokes, which could result in damage to the spokes,
the rear derailleur and the frame. In the worst case, it
could be impossible to continue cycling.
G
Be sure to do a test ride in an unfre-
quented place after adjusting the gears.
A
If your CENTURION road bike has fall-
en over or the rear derailleur received a
blow
(h)
, the rear derailleur or its mount,
also referred to as derailleur hanger, might be
bent. It is advisable to check its range of move-
ment and readjust the limit screws, if necessary,
after such an incident or after mounting a new
rear wheel on your bike.
I
Let your CENTURION dealer maintain
and service your CENTURION road bike
regularly.
Summary of Contents for ROAD BIKE ISO 4210-2
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