Shimano Ultegra R8050 Series Dealer's Manual page 131

ADJUSTMENT
Adjustment of the rear derailleur
5
[X]
[X]
6
To be continued on next page
If shifting switch [X] is pressed once
while the initial setting condition is
active, the guide pulley will move one
step toward the inside.
If shifting switch [Y] is pressed once, the
guide pulley will move one step toward
the outside.
The guide pulley can move 16 steps
inward and 16 steps outward from the
initial position, for a total of 32
positions.
[Y]
[Y]
While turning the front chainwheel,
operate shifting switch [X] to move the
guide pulley toward the inside until the
chain touches the 4th sprocket and
makes a slight noise.
[X]
131
TECH TIPS
When adjusting, the guide pulley will overrun
slightly and then move back in an
exaggerated movement so that you can check
the adjustment direction.
When checking the positions of the guide
pulley and the sprocket, check the position
where the guide pulley finally stops.