Shimano Deore M590 Front Derailleur User Manual

User Manual: Shimano Deore M590 Front Derailleur User Manual

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SI-6S80A-003-00

General Safety Information

Specifications
Front Derailleur

WARNING
• 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.
Reinforced
If connecting pins other than reinforced connecting pins
Chain
Chain tool
connecting pin
are used, or if a reinforced connecting pin or tool which
is not suitable for the type of chain is used, sufficient
9-speed super narrow
Silver
connection force may not be obtained, which could
chain such as
TL-CN32 / TL-CN27
6.5mm
CN-7701 / CN-HG93
cause the chain to break or fall off.
8- / 7- / 6-speed narrow
• If it is necessary to adjust the length of the chain due
Black
chain such as
TL-CN32 / TL-CN27
to a change in the number of sprocket teeth, make the
7.1mm
CN-HG50 / CN-HG40
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
Reinforced Connecting Pin
is cut at a place where it has been joined with a reinforced connecting pin or an end pin.
• Be careful not to let the cuffs of your clothes get caught in the chain while riding, otherwise you
may fall off the bicycle.
• Check that the tension of the chain is correct and that the chain is not damaged. If the tension
End Pin
Link Pin
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.
• Use a front chainwheel which is compatible with 9-speed chains in conjunction with Shimano CN-7701,
CN-HG93 and CN-HG73 chains. If a chainwheel for an 8-speed chain or less is used, front chainwheel gear shifting problems
may occur, or the chain pins might fall out, causing the chain to break.
• The two left crank arm mounting bolts should be tightened alternately in stages rather than each bolt being fully tightened all at
once. Use a torque wrench to check that the final tightening torques are within the range of 12 - 14 N·m.
Furthermore, after riding approximately 100 km (60 miles), use a torque wrench to re-check the tightening torques.
It is also important to periodically check the tightening torques.
If the tightening torques are too weak or if the mounting bolts are not tightened alternately in stages, the left crank arm may
come off and the bicycle may fall over, and serious injury may occur as a result.
• Check that there are no cracks in the crank arms before riding the bicycle. If there are any cracks, the crank arm may break and
you may fall off the bicycle.
• If the inner cover is not installed correctly, the axle may rust and become damaged, and the bicycle may fall over and serious injury
may occur as a result.
• 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.
• Read these Technical Service Instructions carefully, and keep them in a safe place for later reference.

X = Available

Model number

FD-M590 / FD-M591

Applicable to both normal type and top route type

Installation band diameters:
S (28.6 mm), M (31.8 mm), L (34.9 mm)

Front chainwheel tooth difference

22T

Min. difference between top and intermediate

When using the S, M size, use an
installation band with a diameter of 28.6
mm, 31.8mm and install it to a L size
adapter.

12T

Front derailleur installation band diameter

S, M, L

Chainstay angle (a)

63° - 66°, 66° - 69°

Applicable chain line

50 mm

Chainstay angle

■ Note

• FD-M590

When installing the components to carbon frame/handle bar
surfaces, verify with the manufacturer of the carbon frame/parts for
their recommendation on tightening torque in order to prevent over
tightening that can cause damage to the carbon material and/or
under tightening that can cause lack of fixing strength for the
components.

< Normal type >

The level section of the chain guide
outer plate should be directly above
and parallel to the largest chainring.
Secure using a 5 mm Allen key.

< Top route type >

Note:
Pass the cable
through as shown
in the illustration.

Chainwheel
(largest chainring)

Wire
fixing bolt

5 mm Allen key

Chain guide

Chainwheel

Bottom Bracket

Model number

FC-M590 / FC-M591

Chainwheel tooth combination

44-32-22T / 48-36-26T

Bolt circle diameter

104 mm / 64 mm

Crank arm length

170 mm, 175 mm

Chain line

Model number

SM-BB51

Bottom bracket shell width

68, 73 mm

Tightening torque :
5 - 7 N·m {44 - 60 in. lbs.}

< Top route type >
Note:
Pass the cable
through as shown
in the illustration.

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

68, 73 mm
BC1.37 (68, 73mm)

Thread dimensions

< Normal type >

1.37 X 24 T.P.I.

Thread dimensions

50 mm

Bottom bracket shell width

• FD-M591

Largest sprocket

Wire
fixing bolt

Largest chainring

Chain

Gear shifting operation

Tightening torque :
5 - 7 N·m {44 - 60 in. lbs.}

Installation of the lever

This release lever is equipped with a 2-way release mechanism which allows release operations to be carried out by either pushing or pulling
the lever. Both lever (A) and lever (B) always return to the initial position when they are released after shifting. When operating one of the
levers, always be sure to turn the crank arm at the same time.

To shift from a small chainring to a larger chainring

To shift from a large chainring to a smaller chainring

When lever (A) is pressed once, there is a shift of one step
from a small chainring to a larger chainring.

When lever (B) is pressed once, there is a shift of one step
from a large chainring to a smaller chainring.

Example:

Lever (A) initial position

from intermediate chainring
to largest chainring.

After taking up the initial slack in the cable, re-secure to the front
derailleur as shown in the illustration.

Use a handlebar grip with a maximum outer diameter of 36 mm.

Normal type

Top route type

Tightening torque :
5 N·m {44 in. lbs.}

Pull
Pull

from largest chainring to
intermediate chainring.
4 mm Allen key

Note

• In addition, if pedaling performance does not feel normal, check this once more.
• Before riding the bicycle, check that there is no play or looseness in the connection. Also, be sure to retighten the crank arms
and pedals at periodic intervals.
• If a squeaking noise is heard coming from the bottom bracket axle and the left crank arm connector, apply grease to the connector and
then tighten it to the specified torque.
• Do not wash the bottom bracket with high-pressure jets of water.
• If you feel any looseness in the bearings, the bottom bracket should be replaced.
• 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 wash the chainrings in a neutral detergent and then lubricate them again. In addition, cleaning the chain
with neutral detergent and lubricating it can be an effective way of extending the useful life of the chainrings and the chain.
• If the chain keeps coming off the chainrings during use, replace the chainrings and the
chain.
Front
• When the chain is in the position shown in the illustration, the chain may contact the front
chainrings
chainrings or front derailleur and generate noise. If the noise is a problem, shift the chain
onto the next-larger rear sprocket or the one after.
• Apply grease to the left and right adapters before installing them.
Rear
• For smooth operation, use the specified outer casing and the bottom bracket cable guide.
sprockets
• This front derailleur is for triple front chainwheel use only. It cannot be used with the
double front chainwheel, as the shifting points do not match.
• When installing the top route type, choose a frame that has three outer casing holders as shown in the
Outer casing holders
illustration at right.
• 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.
• A special grease is used for the gear shifting cable (SIS-SP41). Do not use DURA-ACE grease or other
types of grease, otherwise they may cause deterioration in gear shifting performance.
• Grease the inner cable and the inside of the outer casing before use to ensure that they slide properly.
• Operation of the levers related to gear shifting should be made only when the front chainwheel is turning.
• If the brake fluid used in the oil disc brakes is of a type which tends to adhere to the plastic parts of the shifting lever, this may
cause the plastic parts to crack or become discolored. Therefore, you should make sure that the brake fluid does not adhere to
these plastic parts.
The mineral oil which is used in SHIMANO disc brakes does not cause cracking or discoloration if it adheres to plastic parts, but
such parts should be cleaned with alcohol beforehand to prevent foreign particles from adhering.
• Do not disassemble the indicator and shifting lever unit, as this may damage them or cause mis-operation.
• Be sure to read these service instructions in conjunction with the service instructions for the SM-BB51 before use.
• 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.

Technical Service Instructions

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

Lever (B)

2-way release

SIS Adjustment

(counterclockwise thread) and the left adapter (clockwise
thread).
Tightening torque: 35 - 50 N·m {305 - 435 in. lbs.}

3
4

Insert the right crank unit.

Use the TL-FC16 to tighten the cap.
Tightening torque: 0.7 - 1.5 N·m {6 - 13 in. lbs.}

Largest
sprocket

TL-FC16

2
Inner cover

Plate pin

(1) Check whether the width of the bottom bracket
shell is 68 mm or 73 mm.
(2) Next, install the adapter while referring to the
illustrations below.

Push up

Stopper plate

Spacer

Bracket Type
68 mm

F
A

Band Type

BB mounttype bracket

68 mm
*1

F
B

F
C

F
A

F
B

F
C

2.5 mm

1.8 mm

0.7 mm

Chaincase Stay Type
68 mm

Front Drive System

F
A

73 mm

F
A

73 mm

F
A

73 mm

F
A

F
C F
A

73 mm

Low adjustment
screw

Operate lever (B) 2 or more times,
check on the indicator that the low
position is correct, and then secure
the inner cable.

F
A

BB mounttype bracket

F
A

Deore

Series
Rapidfire M9 (Shifting lever)

SL-M590

Outer casing

SIS-SP41

Front derailleur

FD-M590 / FD-M591

Front chainwheel

FC-M590 / FC-M591

Bottom Bracket

SM-BB51

Chain

CN-HG53

Bottom bracket cable guide
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.

F
A

*1
*2

F
A

F
C

Front Derailleur
Front Chainwheel

Pro-Set alignment block

Gear teeth
should come
within this range

Bolt

SM-SP17 / SM-BT17

Adjust and then install the front derailleur as shown in the
illustration. Do not remove the Pro-Set alignment block at this time.

Pro-Set gauge

One Holland, Irvine, California 92618, U.S.A. Phone: +1-949-951-5003
Industrieweg 24, 8071 CT Nunspeet, The Netherlands Phone: +31-341-272222

Adapter
3-77 Oimatsu-cho, Sakai-ku, Sakai-shi, Osaka 590-8577, Japan

Please note: specifications are subject to change for improvement without notice. (English)
© Feb. 2009 by Shimano Inc. XBC SZK Printed in Japan.

Tightening torque :
35 - 50 N·m {305 - 435 in. lbs.}

Adapter

Chain position
Largest
sprocket

Intermediate
chainring

B
Chain guide
inner plate
Chain

Lever (B)
Outer casing adjustment barrel

After completion of steps 1 - 4, move the shifting lever to check the
shifting. (This also applies if shifting becomes difficult during use.)

Install the inner hole cover by
turning it as shown in the
illustration until it stops.
Do not turn it any further than this,
otherwise it may damage the screw
thread.

Unit cover

Feed lever

Inner hole cover

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

Install as shown in the
illustration.

When carrying out adjustment, set the
chain to the largest sprocket, and at the
front, set the chain to the intermediate
chainring. Adjust using the outer casing
adjustment barrel so that the clearance
between the chain guide inner plate and
the chain is 0 - 0.5 mm.

5. Troubleshooting chart

73 mm

If using three 2.5 mm spacers with a band type and a bottom bracket shell having a width of 68 mm, install the three spacers so that there are two on the right and one on the
left.
1.8 mm corresponds to the thickness of the chain case.

For bracket type

4. Adjustment of the intermediate
chainring

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

Chain

FD-M590

2. Connecting and securing the inner cable

Bracket Type

Chaincase stay 68 mm

SI-6S80A-003
F
A

Chain

Note :
Set the stopper plate in
the right direction as
shown in illustration.

< FC-M591 >

Band Type

Smallest
chainring

Top adjustment
screw
Chain guide outer
plate

Chain guide
inner plate

■ Spacer installation method

68 mm

FD-M591

Chain position

Push in the stopper plate and check that the plate pin is securely
in place, and then tighten the bolt of the left crank arm. (5 mm
Allen key)
Note : Each of the bolts should be evenly and equally tightened
to 12 - 14 N·m {106 - 122 in. lbs.}.

< FC-M590 >

FD-M590

Set section A of the left crank into the axle of the right crank unit
where the groove is wide.

Pro-Set alignment
block

FD-M591

Largest
chainring

First remove the Pro-Set alignment block .
Next, set so that the clearance between the chain guide inner
plate and the chain is 0 - 0.5 mm.

Wide groove
area

TL-FC32

1, 2 Use the special tool TL-FC32/36 to install the right adapter

Smallest
sprocket

1. Low adjustment

Follow the procedure in the figure.

Set so that the clearance
between the chain guide
outer plate and the chain is
0 - 0.5 mm.
Chain position

Be sure to follow the sequence described below.

Installation of the Front Chainwheel and Front Derailleur

3. Top adjustment

Outer end cap

Cut off the excess length of inner cable and then install the inner
end cap.
While firmly pulling the inner cable, secure by tightening the fixing
bolt with a 5 mm Allen key.

If the chain falls to the crank
side.

Tighten the top adjustment screw
clockwise (about 1/4 turn).

If shifting is difficult from the
intermediate chainring to the
largest chainring.

Loosen the top adjustment screw
counterclockwise
(about 1/8 turn).

If shifting is difficult from the
intermediate chainring to the
smallest chainring.

Loosen the low adjustment screw
counterclockwise
(about 1/4 turn).

Tighten the top adjustment screw
If there is interference between
the chain and the front derailleur clockwise (about 1/8 turn).
inner plate at the largest
chainring.
Loosen the top adjustment screw
If there is interference between
the chain and the front derailleur counterclockwise
(about 1/8 turn).
outer plate at the largest
chainring.
If the intermediate chainring is
skipped when shifting from the
largest chainring.

Loosen the outer casing
adjustment barrel
counterclockwise (1 or 2 turns).

Tighten the outer casing
If there is interference between
adjustment barrel clockwise
the chain and front derailleur
(1 or 2 turns).
inner plate when the rear
sprocket is shifted to the largest
sprocket when the chainwheel is
at the intermediate chainring
position.
If the chain falls to the bottom
bracket side.

Tighten the low adjustment screw
clockwise (about 1/2 turn).

If the lever is stiff when shifting
from the intermediate chainring
to the largest chainring

Loosen the top adjustment screw
counterclockwise (about 1/4
turn).

■ Refer to the Service Instructions for the Rear Drive System for details on replacing and installing the indicator unit.

SI-6SA0A-001-00

General Safety Information

Specifications
Front Derailleur

Note

X = Available

Model number

FD-M590 / FD-M591

Applicable to both normal type and top route type

Installation band diameters:
S (28.6 mm), M (31.8 mm), L (34.9 mm)

Front chainwheel tooth difference

When using the S, M size, use an
installation band with a diameter of 28.6
mm, 31.8mm and install it to a L size
adapter.

22T

Min. difference between top and intermediate

12T

Front derailleur installation band diameter

S, M, L

Chainstay angle

63° - 66°, 66° - 69°

Chainstay angle (a)
Applicable chain line

■ Note

• FD-M590

< Normal type >

The level section of the chain guide
outer plate should be directly above
and parallel to the largest chainring.
Secure using a 5 mm Allen key.

Model number

FC-M590 / FC-M591

Chainwheel tooth combination

44-32-22T / 48-36-26T

Bolt circle diameter

104 mm / 64 mm

Crank arm length

170 mm, 175 mm

Model number

SM-BB51

Bottom bracket shell width

68, 73 mm

Thread dimensions

Note:
Pass the cable
through as shown
in the illustration.

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

BC1.37 (68, 73mm)

Thread dimensions

Largest sprocket

Gear shifting operation
It is recommended that you adjust
the grip widths of the levers to the
most comfortable widths for gear
shifting and braking.

When lever (A) is pressed once,
there is a shift of one step from a small
chainring to a larger chainring.

After taking up the initial slack in the cable, re-secure to the front
derailleur as shown in the illustration.

Installation of the lever

Normal type

from intermediate chainring
to largest chainring.

Set so that the clearance
between the chain guide
outer plate and the chain is
0 - 0.5 mm.

2-way release

from largest chainring to
intermediate chainring.

SIS Adjustment

Follow the procedure in the figure.
4

(counterclockwise thread) and the left adapter (clockwise
thread).
Tightening torque: 35 - 50 N·m {305 - 435 in. lbs.}

Use the TL-FC16/18 to tighten the cap.
Tightening torque: 0.7 - 1.5 N·m {6 - 13 in. lbs.}

TL-FC16

Plate pin

Push up

Spacer

< FC-M591 >
F
A

Chain

F
B

F
C

F
A

F
B

F
C

2.5 mm

1.8 mm

0.7 mm

Chaincase Stay Type
68 mm

F
A

73 mm

F
A

73 mm

F
A

73 mm

F
A

F
C F
A

73 mm

F
A

BB mounttype bracket

F
A

Deore

RAPIDFIRE-Plus (Shift brake lever)

ST-M590

Outer casing

SIS-SP41

FD-M590 / FD-M591

Front chainwheel

FC-M590 / FC-M591

Bottom Bracket

SM-BB51

Chain

CN-HG53

F
A

F
C

Install as shown in the
illustration.

Front Derailleur
Front Chainwheel

Pro-Set alignment block

Gear teeth
should come
within this range

Bolt

SM-SP17 / SM-BT17

Adjust and then install the front derailleur as shown in the
illustration. Do not remove the Pro-Set alignment block at this time.

Pro-Set gauge

One Holland, Irvine, California 92618, U.S.A. Phone: +1-949-951-5003
Industrieweg 24, 8071 CT Nunspeet, The Netherlands Phone: +31-341-272222

Adapter
3-77 Oimatsu-cho, Sakai-ku, Sakai-shi, Osaka 590-8577, Japan

Please note: specifications are subject to change for improvement without notice. (English)
© Mar. 2009 by Shimano Inc. XBC SZK Printed in Japan.

Tightening torque :
35 - 50 N·m {305 - 435 in. lbs.}

Adapter

Chain position
Largest
sprocket

Intermediate
chainring

B
Chain guide
inner plate
Chain

Lever (B)
Outer casing adjustment barrel

5. Troubleshooting chart

Install the inner hole cover by
turning it as shown in the
illustration until it stops.
Do not turn it any further than this,
otherwise it may damage the screw
thread.

Unit cover

Feed lever

Inner hole cover

For bracket type

Cutting the outer casing

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

4. Adjustment of the intermediate
chainring

After completion of steps 1 - 4, move the shifting lever to check the
shifting. (This also applies if shifting becomes difficult during use.)

73 mm

Front derailleur

Operate lever (B) 2 or more
times, check on the indicator that
the low position is correct, and
then secure the inner cable.

Chain

FD-M590

2. Connecting and securing
the inner cable

Bracket Type

*2 Chaincase stay 68 mm

SI-6SA0A-001
F
A

Low adjustment
screw

Note :
Set the stopper plate in
the right direction as
shown in illustration.

Stopper plate

Band Type

Smallest
chainring

2
Inner cover

(1) Check whether the width of the bottom bracket
shell is 68 mm or 73 mm.
(2) Next, install the adapter while referring to the
illustrations below.

Chain guide outer
plate

Chain guide
inner plate

■ Spacer installation method

68 mm
*1

FD-M591

Chain position
Largest
sprocket

Bracket Type

FD-M590

Set section A of the left crank into the axle of the right crank unit
where the groove is wide.

BB mounttype bracket

Pro-Set alignment
block

Top adjustment
screw

Largest
chainring

First remove the Pro-Set alignment block .
Next, set so that the clearance between the chain guide inner
plate and the chain is 0 - 0.5 mm.

Wide groove
area

TL-FC32

1, 2 Use the special tool TL-FC32/36 to install the right adapter

Smallest
sprocket

1. Low adjustment

Installation of the Front Chainwheel and Front Derailleur

FD-M591

Chain position

Be sure to follow the sequence described below.

Insert the right crank unit.

Pull

3. Top adjustment

4 mm Allen key

Lever (B)

3
4

Pull

Tightening torque :
6 - 8 N·m
{53 - 69 in. lbs.}

Example:

Top route type

Use a handlebar grip with a maximum outer diameter of 36 mm.

A : Becomes narrower
B : Becomes wider

When lever (B) is pressed once,
there is a shift of one step from a large
chainring to a smaller chainring.

Tightening torque :
5 - 7 N·m {44 - 60 in. lbs.}

Adjusting the grip width

Lever (A)
initial position

To shift from a small chainring to a larger chainring

68 mm

Wire
fixing bolt

Largest chainring

Chain

This release lever is equipped with a 2-way release mechanism which allows release operations
to be carried out by either pushing or pulling the lever. Both lever (A) and lever (B) always return
to the initial position when they are released after shifting. When operating one of the levers,
always be sure to turn the crank arm at the same time.

< Top route type >

< Normal type >

1.37 X 24 T.P.I.

68, 73 mm

Bottom bracket shell width

• FD-M591

Tightening torque :
5 - 7 N·m {44 - 60 in. lbs.}

50 mm

Chain line

Band Type

Series

5 mm Allen key

Chain guide

Bottom Bracket

68 mm

Front Drive System

Wire
fixing bolt

50 mm

Chainwheel

< FC-M590 >

Technical Service Instructions

Note:
Pass the cable
through as shown
in the illustration.

Chainwheel
(largest chainring)

To shift from a large chainring to a smaller chainring

• In addition, if pedaling performance does not feel normal, check this once more.
• Before riding the bicycle, check that there is no play or looseness in the connection. Also, be sure to retighten the crank arms
and pedals at periodic intervals.
• If a squeaking noise is heard coming from the bottom bracket axle and the left crank arm connector, apply grease to the connector and
then tighten it to the specified torque.
• Do not wash the bottom bracket with high-pressure jets of water.
• If you feel any looseness in the bearings, the bottom bracket should be replaced.
• 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 wash the chainrings in a neutral detergent and then lubricate them again. In addition, cleaning the chain
with neutral detergent and lubricating it can be an effective way of extending the useful life of the chainrings and the chain.
• If the chain keeps coming off the chainrings during use, replace the chainrings and the
chain.
Front
• When the chain is in the position shown in the illustration, the chain may contact the front
chainrings
chainrings or front derailleur and generate noise. If the noise is a problem, shift the chain
onto the next-larger rear sprocket or the one after.
• Apply grease to the left and right adapters before installing them.
Rear
• For smooth operation, use the specified outer casing and the bottom bracket cable guide.
sprockets
• This front derailleur is for triple front chainwheel use only. It cannot be used with the
double front chainwheel, as the shifting points do not match.
• When installing the top route type, choose a frame that has three outer casing holders as shown in the
Outer casing holders
illustration at right.
• 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.
• A special grease is used for the gear shifting cable (SIS-SP41). Do not use DURA-ACE grease or other
types of grease, otherwise they may cause deterioration in gear shifting performance.
• Grease the inner cable and the inside of the outer casing before use to ensure that they slide properly.
• Operation of the levers related to gear shifting should be made only when the front chainwheel is turning.
• Do not disassemble the indicator and shifting lever unit, as this may damage them or cause mis-operation.
• Be sure to read these service instructions in conjunction with the service instructions for the SM-BB51 before use.
• 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.