How to adjust a rear derailleur in five easy steps | Cyclist
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. :
Di2 Shimano® Electronic Intelligent System Installation | Park Tool
How to adjust an electronic road bike groupset – Shimano Di2 | GRAN FONDO Cycling Magazine
Things you need to know about running a Di2 groupset