How to Set Up Your Shimano Di2 Shifting System (Full Wireless)

If the gears ever get stuck, Shimano Di2 shifting systems can be adjusted with minimal effort. We'll show you how to get your Di2 Full Wireless rear derailleur working again in three easy steps.

• Hex wrench, 2 mm
• Workstand (optional)

This tutorial describes how to set up Di2 systems with removable batteries (Full Wireless). For more details, please refer to the manufacturer's manual. For other shifting systems, go to the overview and select the right model.

• H-screw (outer end stop adjustment)
• L-shaped screw (inner end stop adjustment)
• B-screw (chain wrap adjustment)
• Function button (switch to settings mode)

• Shift to the largest sprocket.
• Turn the B-screw in or out to adjust the distance between the upper pulley wheel and the largest sprocket.
• Look at the rear derailleur from the back (brake disc side). There is a marking at the upper end of the rear derailleur cage.
• Align the contour of the cage with the tips of the sprocket teeth.
• Turn the crank arm forward and make sure the chain runs freely.

• Move up to 5th gear (fifth-largest sprocket).
• Press and hold the function button on the rear derailleur until the LED stays lit in yellow (setting mode).
• You can now use the buttons on the shifter to move the rear derailleur in small increments to the left or right.
• Move it all the way to the left until the chain touches the 4th sprocket and until a slight noise can be heard when turning the crank forward.
• Now move the rear derailleur 5 notches to the right toward the 5th sprocket. 
• Press and hold the function button on the rear derailleur until the yellow LED turns off (normal mode).
• Shift through all the gears. If the chain is rubbing in a gear, repeat the procedure in that gear.

• Shift to the largest sprocket.
• Now turn the L-screw (clockwise) until the front end lightly touches the stop (on the opposite side).
• Shift to the smallest sprocket.
• Now turn the H-screw (clockwise) until the front end lightly touches the stop (on the opposite side).

Your rear derailleur should now shift smoothly and run silently.
If it cannot be adjusted in this way, there may be various reasons such as a bent derailleur hanger. In such cases, the service workshop in your Rose store will be happy to help you.