Shimano Steps EP800 Série Mode D'emploi page 65

INSTALLING THE DRIVE UNIT AND PERIPHERAL PARTS
Measuring and adjusting the chain tension
(2) Push TL-DUE60 down, and make it touch the chainring and rear sprocket.
2.
Adjust the chain tension so that the protrusion part of TL-DUE60 does
not stick out from the top of the frame.
` Measuring and adjusting from the lower side of the
chain
1.
Set TL-DUE60.
(1) Set TL-DUE60 to the lower side of the chain.
Protrusion part
43