How to Adjust Shimano Di2 Electronic Rear Derailleur - Road Bike Rider Cycling Site
Ultegra Di2 RD6780. Can anyone confirm the purpose of this spring and tensioner screw? The dealer manual doesn't acknowledge its existence and I've always wondered what the proper adjustment protocol is. :
How to adjust a rear derailleur in five easy steps | Cyclist
How To: Adjust Shimano Di2 Rear Derailleurs - YouTube