Shimano DURA-ACE ST-7970 Посібник - Сторінка 9
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5.
Next, carry out the adjustments for the low
adjustment bolt and top adjustment bolt.
< Low adjustment >
Shift the rear derailleur to the largest sprocket,
and then tighten the low adjustment bolt until it
touches the stopper.
< Top adjustment >
Shift the rear derailleur to the smallest sprocket,
and then tighten the top adjustment bolt until it
touches the stopper at the position where the rear
derailleur finally stopped.
From this position, turn the top adjustment bolt
counterclockwise one turn so that an over-stroke
allowance can always be maintained.
2 mm Allen key
Low adjustment bolt
2 mm Allen key
Top adjustment bolt
By shifting from the largest sprocket to the
smallest sprocket, the rear derailleur will
move toward the outside by the over-stroke
allowance and then move back.
8