Shimano DURA-ACE ST-7970 Manuel - Page 4

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General Safety Information

WARNING

• When the shifting switch is operated, the motor

which drives the front derailleur will operate

without stopping at the shifting lever position.

Always be sure to remove the battery before

carrying out installation and adjustment,

otherwise your fingers may become stuck.

• Obtain and read the service instructions carefully

prior to installing the parts. Loose, worn or

damaged parts may cause the bicycle to fall over

and serious injury may occur as a result. We

strongly recommend only using genuine Shimano

replacement parts.

• Obtain and read the service instructions carefully

prior to installing the parts. If adjustments are not

carried out correctly, the chain may come off and

this may cause you to fall off the bicycle which

could result in serious injury.

• Use the ST-7970 with the BR-7900. Do not use the

BR-7900 in combination with previous STI levers for

road riding or with the BL-R770/ BL-R550 brake

levers for flat handlebars, otherwise the braking

performance provided will be much too strong.

• Because of the characteristics of the carbon fiber

material, you must never modify the levers,

otherwise the lever may break and the brakes may

no longer work as a result.

• Before riding the bicycle, check that there is no

damage such as carbon fiber peeling or cracking. If

there is any damage, replace with a new part

immediately without trying to repair the damage,

otherwise the lever may break and the brakes may

no longer work as a result.

• Read these Technical Service Instructions carefully,

and keep them in a safe place for later reference.

In order to realize the best performance, we recommend that the following combination

be used.

Series

Dual control lever

Electric cable

Battery / Battery charger

Gears

Front derailleur

Front chainwheel

Rear derailleur

Freehub

Cassette sprocket

Chain

Caliper brake

Note

• RD-7970: Be sure to adjust the top

adjustment bolt and the low adjustment

bolt by following the procedures in the

Service Instructions. If these bolts are not

adjusted, the chain may become clamped

between the spokes and the large

sprocket and the wheel may lock, or the

chain may slip onto the small sprocket.

• Use a soft cloth to clean the carbon fiber

levers, and be sure to moisten the cloth

with neutral detergent before using it,

otherwise the lever material may become

damaged and lose its strength.

• Avoid leaving the carbon fiber levers in

places where high temperatures are

present. Also keep them well away from

fire.

• Operation of the levers related to gear

shifting should be made only when the

front chainwheel is turning.

• Always be sure to use the TL-EW01

special tool to remove the cable.

• Be careful not to let water get into the

terminal.

• Parts are not guaranteed against natural

wear or deterioration resulting from

normal use.

• For maximum performance we highly

recommend Shimano lubricants and

maintenance products.

• For any questions regarding methods of

installation, adjustment, maintenance or

operation, please contact a professional

bicycle dealer.

DURA-ACE

ST-7970

EW-7970 / 7972 / 7973 / 7975, SM-EW79A

SM-BTR1 / SM-BCR1

FD-7970

FC-7900

RD-7970

FH-7900

CS-7900 (Except for 11-28T)

CN-7900

BR-7900