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SL-RS43-7

1. Top adjustment

Turn the top adjustment screw to adjust so that the guide pulley is
below the outer line of the smallest sprocket when looking from the
rear.

1

2

1

2

Guide pulley

Outer line of smallest 
sprocket

Top 
adjustment 
screw

RD-TX70 / TX50 / TX30

Cable securing and stroke adjustment

• If routing the casing downward:

(The chain should be on the largest chainring and on the largest
sprocket.)
Set the length of the outer casing so that it describes a smooth arc,
and so that the link stops in a position where there is a small gap
between the link and the link stop.

Place the outer casing so that it does not touch the basket and
mudguard, otherwise it may cause a problem with the performance of
the derailleur.

Set the outer casing (RD-TX70/RD-TX50/RD-FT30) so that its
length is as follows.

• If routing the casing upward:

(The chain should be on the largest chainring and on
the largest sprocket.)
Add 10 mm to the length of the outer casing from the
end that is inserted into the outer casing holder to the
end which is inserted into the link.

Outer casing
holder

Link

Largest

sprocket

Largest

chainring 

Link stop

Link

Chain position

Largest

sprocket

Largest

chainring 

Chain position

L

Connect the inner cable to the
derailleur as shown in the illustration.

Inner cable

< RD-TX70 / RD-TX50 / RD-FT30 >

max. 
angle

max. 
angle

RD-FT30

RD-FT30

RD-TY18

RD-TY18

Mounting the shifting lever

Tightening torque:

2 N·m {18 in. lbs.}

Handlebar

Half grip

Install the brake lever in a position where it will not obstruct brake
operation. 
Do not use in a combination which causes brake operation to be
obstructed.

Gear shifting operation

Pedaling becomes

heavier

Pedaling becomes

lighter

Model number

Gears

SL-RS43-7

SIS 7 - gears

Shifting lever

Specifications

SL-RS43-6

SIS 6 - gears

Tooth combination

Gears

14, 16, 18, 20, 22, 24, 34T
14, 16, 18, 20, 22, 24, 28T
13, 15, 17, 19, 21, 24, 34T

7

Type

Gears

Total capacity

Rear largest sprocket

Rear smallest sprocket

SS

7 / 6

17T

28T

11T

Front chainwheel tooth difference

––

RD-FT30

Model number

Rear derailleur

Sprocket tooth configurations

14, 16, 18, 21, 24, 34T
14, 16, 18, 21, 24, 28T

6

GS

6

34T

28T

14T

20T

SS

6

28T

28T

14T

13T

RD-TY18

Smartcage

7 / 6

43T

28-34T

11T

20T

RD-TX30

Smartcage

7 / 6

43T

28-34T

11T

20T

RD-TX50

Smartcage

7 / 6

43T

28-34T

11T

20T

RD-TX70

SIS40

7 - gears

SIS40

6 - gears

CN-HG50

SM-SP18/BT18

CN-HG50

SM-SP18/BT18

CN-HG50

SM-SP18/BT18

CN-HG50

SM-SP18/BT18

SIS40

MF-TZ37/HG50
MF-HG37/TZ07

MF-HG40-6/HG22

MF-TZ06

MF-TZ37/TZ07

MF-HG50

MF-HG40-6/HG22

MF-TZ06

SL-RS43-6

SL-RS43-7

SL-RS43-6

7 - gears

RD-TX70/RD-TX50

RD-TX30

RD-TX70/RD-TX50
RD-TX30/RD-TY18

RD-TX70/RD-TX50

RD-TX30
RD-FT30

RD-TX70/RD-TX50
RD-TX30/RD-TY18

RD-FT30

SIS40

6 - gears

Right

Multiple freewheel

Chain

Bottom bracket cable guide

Shifting lever

Rear derailleur

Outer casing

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

Series

Gears

Tourney

• Use neutral detergent to clean the chain. Do not use alkali-based or acid based detergent such as rust cleaners as it may

result in damage and/or failure of the chain.

• Use the reinforced connecting pin only for connecting the narrow type of chain.
• There are two different types of reinforced connecting pins available. Be sure to check the table below before selecting

which pin to use. If connecting pins other than reinforced connecting pins are used, or if a reinforced connecting pin or tool
which is not suitable for the type of chain is used, sufficient connection force may not be obtained, which could cause the
chain to break or fall off.

• If it is necessary to adjust the length of the chain due to a change in the number of sprocket

teeth, make the cut at some other place than the place where the chain has been joined
using a reinforced connecting pin or an end pin. The chain will be damaged if it is cut at a
place where it has been joined with a reinforced connecting pin or an end pin.

• Check that the tension of the chain is correct and that the chain is not damaged. If the

tension is too weak or the chain is damaged, the chain should be replaced. If this is not
done, the chain may break and cause serious injury.

• Check that the wheels are fastened securely before riding the bicycle. If the wheels are loose in any way, they may come off

the bicycle and serious injury may result.

• Obtain and read the service instructions carefully prior to installing the parts.  Loose, worn, or damaged parts may cause

injury to the rider.
We strongly recommend only using genuine Shimano replacement parts.

• Read these Technical Service Instructions carefully, and keep them in a safe place for later reference.

Note

• The reinforced connecting pins cannot be used with the UG chain, otherwise the connections will not move properly and

noise will occur.

• If gear shifting operations do not feel smooth, wash the derailleur and lubricate all moving parts.
• If the amount of looseness in the links is so great that adjustment is not possible, you should replace the derailleur.
• You should periodically clean the derailleur and lubricate all moving parts (mechanism and pulleys).
• If gear shifting adjustment cannot be carried out, check the degree of parallelism at the rear end of the bicycle. Also check if

the cable is lubricated and if the outer casing is too long or too short.

• If you hear abnormal noise as a result of looseness in a pulley, you should replace the pulley.
• If the wheel becomes stiff and difficult to turn, you should lubricate it with grease. 
• Do not apply any oil to the inside of the hub, otherwise the grease will come out.
• You should periodically wash the sprockets in a neutral detergent and then lubricate them again. In addition, cleaning the

chain with neutral detergent and lubricating it can be a effective way of extending the useful life of the sprockets and the
chain.

• If the chain keeps coming off the sprockets during use, replace the sprockets and the chain.
• Use an outer casing which still has some length to spare even when the handlebars are turned all the way to both sides.

Furthermore, check that the shifting lever does not touch the bicycle frame when the handlebars are turned all the way.

• Grease the inner cable and the inside of the outer casing before use to ensure that they slide properly.
• Use a frame with internal cable routing is strongly discouraged as it has tendencies to impair the SIS shifting function due to

its high cable resistance.

• Operation of the levers related to gear shifting should be made only when the front chainwheel is turning.
• For smooth operation, use the specified outer casing and bottom bracket cable guide.
• To ensure the best performance, be sure to use only the specified type of chain.  The wide type chain cannot be used.
• For maximum performance we highly recommend Shimano lubricants and maintenance products.
• Parts are not guaranteed against natural wear or deterioration resulting from normal use.
• For any questions regarding methods of installation, adjustment, maintenance or operation, please contact a professional

bicycle dealer.

Technical Service Instructions

SI-6KP0A

Rear Drive System

Leave a gap of 0.5 mm between the Revo-shift
lever and the half grip.

Loosen the outer casing
adjustment barrel until the chain
touches the 3rd sprocket and
makes noise. (counter clockwise)

Tighten the outer cable adjusting
barrel until the chain returns to
the 2nd sprocket. (clockwise)

Best setting

The best setting is when the shifting lever is operated
just enough to take up the play and the chain touches
the 3rd sprocket and makes noise.
* Return the lever to its original position (the position

where the lever is at the 2nd sprocket setting and it has
been released) and then turn the crank arm clockwise.
If the chain is touching the 3rd sprocket and making
noise, turn the outer casing adjustment barrel
clockwise slightly to tighten it until the noise stops and
the chain runs smoothly.

Operate lever to change gears, and check that no
noise occurs in any of the gear positions.

Operate the shifting lever several times to move
the chain to the 2nd sprocket. Then, while
pressing the lever just enough to take up the play
in the lever, turn the crank arm.

SIS Adjustment

For the best SIS performance, periodically lubricate all power-transmission
parts.

When shifting to 3rd

Play

When no sound at
all is heard

adjustment
ballel

RD-TX70/50
RD-FT30

RD-TX30

adjustment
ballel

RD-TX70/50
RD-FT30

RD-TX30

Replacing the inner cable

Replace the inner cable by carrying out
steps 

to 

as shown in the illustrations.

General Safety Information

Chain

WARNING

Chain tool

9-speed super narrow 

chain such as 

CN-7701 / CN-HG93

8- / 7- / 6-speed narrow 

chain such as 

CN-HG50 / CN-IG51

Reinforced connecting pin

TL-CN32 / TL-CN23

TL-CN32 / TL-CN23

Silver

Black

Reinforced Connecting Pin

End Pin

Link Pin

6.5mm

7.1mm

One Holland, Irvine, California 92618, U.S.A.  Phone: +1-949-951-5003

Industrieweg 24, 8071 CT Nunspeet, The Netherlands  Phone: +31-341-272222

3-77 Oimatsu-cho, Sakai, Osaka 590-8577, Japan

Please note: specifications are subject to change for improvement without notice. (English)  
© Apr. 2005 by Shimano Inc.  XBC SZK Printed in Singapore

This service instruction explains 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.

Pull

Groove

Note: Be sure that the cable is

securely in the groove.

Tightening torque: 

5 - 7 N·m {44 - 60 in. lbs.}

2. Connection and securing of cable

Connect the cable to the rear derailleur and, after taking up the initial
slack in the cable, reattach to the rear derailleur as shown in the
illustration.
Secure the cable by pulling it with pliers with a force of 5 - 10 kg.

RD-TX70 / TX50 / TX30

1

2

1

2

Guide pulley

Low adjustment
screw

Largest
sprocket

3. Low adjustment

Turn the low adjustment screw so that the guide pulley moves to a
position directly below the 

largest sprocket.

Mount the chain on the smallest chainring and the largest sprocket, 
and turn the crank arm
backward.  Then turn the B-
tension adjustment screw to
adjust the guide pulley as close
to the sprocket as possible but
not so close that it touches.  
Next, set the chain to the
smallest sprocket and repeat the
above to make sure that the
pulley does not touch the
sprocket.

1

2

1

2

2

1

B-tension 

adjustment screw

Largest sprocket

Smallest sprocket

4. How to use the B-tension adjustment screw

< RD-TX70 / RD-TX50 / RD-TX30 >

3 mm Allen Key

Chain length

Chain

Largest 

chainring

Largest 

chainring

< GS >

< SS >

Smallest 
sprocket

Largest 

chainring

Chain

Guide pulley

Tension pulley

Right angle to the ground

Add 2 links (with the chain on
both the largest sprocket and
the largest chainring)

Bracket type

Frame

Bracket bolt

Bracket nut

Bracket

Tightening torque: 

3 - 4 N·m 

{26 - 34 in. lbs.}

Freewheel removal tool

TL-FW30

Tightening torque: 

30 N·m {260 in. lbs.}

Installation of the freewheel

To disassemble

To install

Installation of the rear derailleur

Direct-mount type

Push in and tighten

Tightening torque:

8 - 10 N·m 

{70 - 86 in. lbs.}

5 mm Allen Key

Attach the same outer end
cap to the cut end of the outer
casing.

Outer end cap

Cutting the outer casing

When cutting the outer casing, cut the opposite
end to the end with the marking. After cutting the
outer casing, make the end round so that the
inside of the hole has a uniform diameter.

Inserting the inner cable

Insert the inner cable into the outer casing from the end with the
marking on it. Apply grease from the end with the marking in
order to maintain cable operating
efficiency.

Marking

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