Shimano Ultegra R8050 Series Dealer's Manual page 43

INSTALLATION
Installation of the front derailleur
3
(A)
4
Use a 5 mm hexagon wrench to secure
the chain guide outer plate so that the
flat part of the plate is directly above the
largest chainring and so that the rear
edge of the chain guide is within 0.5 –
1 mm from the front edge.
[A-B]
(B)
[A-B]
Adjust the position of the front
derailleur.
Position the front derailleur so that the
flat part of the chain guide outer plate is
directly above and parallel to the largest
chainring.
(A)
Turn the support bolt with a 2 mm
hexagon wrench to adjust.
0.5 – 1 mm
43
(A)
Chain guide
(B)
Front chainwheel
(largest chainring)
Tightening torque
5 - 7 N·m
(A)
Support bolt