Shimano GRX RD-RX400 Manual del Concesionario - Página 19

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Adjustment

Adjusting the B-screw

Shift the chain to the smallest chainring and the largest sprocket.

Turn the crank arm in reverse.

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

B-screw

Smallest sprocket

B-screw