Gear Shifting Operation; Rear Shifting Switch Operation; Front Shifting Switch Operation - Shimano DURA-ACE ST-7970 Manual

Gear shifting operation

Rear shifting switch operation

< Shifting switch (X) >
The chain moves from a small sprocket to a larger
sprocket each time the switch is operated.
The checker (SM-EC79) can be used to shift up and shift down shifting switches (X) and (Y).
* For details on the shifting switch selection method, refer to the Service Instructions for the checker.

Front shifting switch operation

< Shifting switch (X) >
The chain moves from the small chainring to the
large chainring.
If the chain falls off on the inside, keep pressing
shifting switch (X) to move the front derailleur to
the outermost position in order to reset the chain.
< Shifting switch (Y) >
Shifting switch (X)
< Shifting switch (Y) >
Shifting switch (X)
4
The chain moves from a large sprocket to a smaller
sprocket each time the switch is operated.
The chain moves from the large chainring to the
small chainring.
Shifting switch (Y)
Shifting switch (Y)