Shimano ST-7S20 Operating instructions

1.
2.
SI-61S0C
ST-7S20
BL-TY21
CJ-7S40
Rapidfire Lever
SERVICE INSTRUCTIONS
Before use‚ read these instructions carefully‚ and follow them for correct use.
Brake Lever
Cassette Joint
Be sure to shift the lever one gear at a time, and reduce the
force being applied to the pedals during shifting. If you try to
force operation of the shifting lever while the pedals are being
turned strongly, your feet may come off the pedals and the
bicycle may topple over, which could result in serious injury.
Be sure to read these service instructions in conjunction
with the service instructions for the Inter-7 hub before use.
CAUTION
Rapidfire lever operation
Push the top or bottom of the lever body to shift the gears.
Installation of the lever
Install the lever as shown in the illustration.
Installation of the shifting cable
Set the Rapidfire lever to .
Next, pass the inner cable through the hole at the rear of the
Rapidfire lever.
1
Indicator moves toward 7
Depress
Pass the inner cable
through the hole.
Lever body
5 mm Allen key
Screwdriver
22.2 mm
The installation angle can be adjusted to one of two
positions to suit the shape of the handlebars. Angle
adjustment is carried out by loosening the lever body fixing
bolt.
The clearance between the cable adjusting bolt and the
handlebars should be 4 – 6 mm.
The end of the lever operation section should not hit the
grip.
ST-7S20 Rapidfire Lever
Note:
1
2
3
4
5
6
7
1
2
3
4
5
6
7
1
2
3
4
5
6
7
BL-TY21 Brake Lever
Tightening torque:
2.5 – 3 Nm {25 – 30 kgfcm}
Tightening torque:
2.5 – 3 Nm {25 – 30 kgfcm}
Set to 1
Pedaling becomes heavier
Indicator
Attach to the straight
section of the handlebars.
Inner cable fixing bolt unit
101 mm
Pull the inner cable while attaching
the inner cable fixing bolt unit.
After checking that the end of the outer casing is sitting securely
in the cable adjusting bolt of the Rapidfire lever, attach the inner
cable fixing bolt unit to the inner cable.
Note: Do not use this inner cable fixing bolt unit with
the CJ-4S30 cassette joint.
Inner cable fixing nut
Inner cable fixing washer
10 mm
(Black) Inner cable fixing bolt
Tightening torque:
4 – 6 Nm {40 – 60 kgfcm}
Pass the inner cable through the hole.
Indicator moves toward 1
Pedaling becomes lighter
t

6.
1.
3.
4.
5.
Bring the cable around to the cassette joint pulley, hold so that
the inner cable fixing nut is facing to the outside (toward the fork
end), and then slide the flats part of the inner cable fixing washer
into the gap in the pulley.
Turn the cable 60 counterclockwise and attach it to the hook.
Cassette joint pulley
Hook
Inner cable Pulley
Bracket
Attach the inner cable to the pulley as shown in the illustration,
pass the inner cable through the slit in the cassette joint bracket,
and then insert the end of the outer casing securely into the
outer casing holder.
Secure the outer casing to the frame with the outer casing bands.
10 cm
10 cm 15 cm
LOCK
LOCK
Flats part of inner
cable fixing washer
Gap in pulley
Inner cable fixing nut
Outer casing bands
Turn the
cable 60
Slit
Pass through
the slit.
Outer casing holder
1
2
Insert into the outer
casing holder.
Adjusting the cassette joint
4
Red setting lines
1
2
3
4
5
6
7
Set to 4
Set the Rapidfire lever to .
Check to be sure that the red setting lines on the cassette joint
bracket and pulley are aligned at this time.
The red setting lines on the cassette joint are located in two
places. Use the one that is easiest to see.
Cassette joint pulley
Cassette joint pulley
Should be straight
Should be straight
When bicycle is upside down
When bicycle is standing up
Cassette joint bracket
Cassette joint bracket
LOCK
LOCK

2.
Please note: Specifications are subject to change for improvement without notice. (English)
These service instructions are
printed on recycled paper and
can be recycled again.
These service instructions explain how to use and maintain the Shimano
bicycle parts which have been used on your new bicycle. For any
questions regarding your bicycle or other matters which are not related
to Shimano parts‚ please contact the place of purchase or the bicycle
manufacturer.
One Holland Irvine CA 92618 U.S.A. Phone [phone]
Industrieweg 24 NL-8071 CT Nunspeet‚ Holland Phone [phone]
3-77 Oimatsucho‚ Sakai‚ Osaka‚ Japan Phone [phone]
Jun. 1998 by Shimano Inc. PIT. SZK. Printed in Japan
C
14 4
After adjusting the cassette joint, cut off the excess length of
inner cable and then install the inner end cap.
If the red setting lines are not aligned, turn the cable
adjusting bolt of the Rapidfire lever to align the setting
lines. After this, move the Rapidfire lever once more from
to and then back to , and then re-check to be sure
that the red setting lines are aligned.
Inner end cap
Cable adjusting bolt
15 – 20 mm
1
2
3
4
5
6
7
LOCK
t