Shimano GRX RX 815 Series Dealer's Manual page 132

ADJUSTMENT
Adjusting the dual control lever
NOTICE
• Stop loosening the free stroke adjustment screw when the gap stops increasing.
Loosening it excessively may cause the free stroke adjustment screw to fall out.
• Do not forcibly tighten the free stroke adjustment screw. Otherwise, the free
stroke adjustment screw may be damaged.
• Do not remove the washer from the free stroke adjustment screw.
• Position the free stroke adjustment screw so that it does not interfere with the
bracket cover.
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