Adjusting The B-Screw - Shimano GRX RD-RX810 Dealer's Manual

Adjustment

Adjusting the B-screw

Adjusting the B-screw
1.
Shift the chain to the smallest chainring and the largest sprocket.
Turn the crank arm in reverse.
2.
Adjust the B-screw.
Bring the guide pulley as close to the largest sprocket as possible without any turbulence
between the pulley and sprocket.
Smallest chainring
Largest sprocket
Largest sprocket
B-screw
Smallest sprocket
* B-screw
19
*