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LL123

50 mm

D-NL K

D-NL

BB-UN26 (-K)

122.5 mm

FC-M391

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

42-32-22T / 48-38-28T

42-32-22T

42-34-24T / 48-38-28T

104 / 64 mm

170 / 175 mm

170 / 175 mm

170 / 175 mm

BC 9/16" X 20 T.P.I. (English thread)

BB-UN26 (-K)

BB-UN26 (-K)

BB-UN26 (-K)

BB-ES25 (-K)

BB-ES25 (-K)

FC-M391-8

General Safety Information

WARNING

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-ku, Sakai-shi, Osaka 590-8577, Japan

* Service Instructions in further languages are available at :

http://techdocs.shimano.com

Please note: specifications are subject to change for improvement without notice. (English)  © May 2011 by Shimano Inc. XBC IZM 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.

SI-6UAFA-003-00

“Maintenance interval depends on the usage and riding circumstances. Clean regularly the chain with an
appropriate chaincleaner. Never use alkali based or acid based solvents such as rust cleaners. If those
solvent be used chain might break and cause serious injury.”

• 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.

Chain tool

Chain

9-speed super narrow chain

such as 

CN-7701 / CN-HG93

8- / 7- / 6-speed narrow chain

such as 

CN-HG50 / CN-HG40

Reinforced 

connecting pin

TL-CN32 / TL-CN27

TL-CN32 / TL-CN27

6.5mm

7.1mm

Silver

Black

• 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.

• 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 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.

• It is important to periodically check the tightening torques for the crank arms and pedals. After riding approximately 100 km (60 miles), re-

check the tightening torques. If the tightening torques are too weak, the crank arms or pedals 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.

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.

• If the chain is on the smallest or intermediate chainring, there is the danger of injury from the tips of the teeth on the largest chainring.

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.

• When installing the pedals, apply a small amount of grease to the threads to prevent the pedals from sticking. Use a torque wrench to

securely tighten the pedals. Tightening torque: 35 - 55 N·m {305 - 479 in. lbs.}. The right-hand crank arm has a right-hand thread, and the left-
hand crank arm has a left-hand thread.

• Do not wash the bottom bracket with high-pressure jets of water.
• If you feel any looseness in the bottom bracket axle, 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 a effective way of extending the useful life of the chainrings and the chain.

• The cuffs of your clothing may get dirty from the chain while riding.
• If the chain keeps coming off the chainrings during use, replace the chainrings and the chain.
• When the chain is in the position shown in the illustration, the chain may contact the front 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 bottom bracket before installing it.
• For smooth operation, use the specified outer casing and the bottom bracket cable guide.
• 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

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.

• 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.
• 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.

Outer casing holders

End Pin

Link Pin

Reinforced Connecting Pin

CAUTION

Front
chainrings

Rear
sprockets

To shift from a small chainring to a larger chainring
(Lever A)

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

Example: 

from intermediate
chainring to largest
chainring.

To shift from a large chainring to a smaller chainring
(Lever B)

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

Example: 

from largest chainring to
intermediate chainring.

Gear shifting operation

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.

Lever (A) initial position

Lever (B)

Installation of the Front Derailleur, Bottom Bracket and Front Chainwheel

Chainwheel 
(largest chainring)

Chain guide

Use the special tools (TL-UN66 and TL-UN74-S) to install the
bottom bracket 

1

and the front derailleur so that they face as

shown in the illustration. Install the adapter 

2

, and then use

the cotterless crank extractor (TL-FC10) to install the front
chainwheel.

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

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.

Adapter / bottom bracket tightening torque: 

50 - 70 N·m {435 - 608 in. lbs.}

Front chainwheel tightening torque: 

35 - 50 N·m {305 - 435 in. lbs.}

1 mm

3 mm

Gear teeth 
should come
within this range

Pro-Set gauge

Pro-Set alignment block

1

Bottom Bracket

2

Adapter

Front Derailleur

3

Front Chainwheel

Tightening torque : 

5 - 7 N·m {44 - 60 in. lbs.}

Chain length

Largest sprocket

Largest chainring

Chain

*

t = Chain case thickness (1.5 - 2.1 mm)

SIS adjustment

Be sure to follow the sequence described below.

1. Low adjustment

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.

Pro-Set alignment block

Chain position

Largest sprocket

Smallest
chainring

Chain

Chain guide 

inner plate

Low adjustment

screw

FD-M390
FD-M360
FD-M190A
FD-M190
FD-M191

FD-M311

Chain

Chain guide outer
plate

Top adjustment

screw

FD-M390
FD-M360
FD-M190A
FD-M190
FD-M191

FD-M311

Technical Service Instructions

SI-6UAFA-003

Front Drive System

Right

Left

Shifting lever

Outer casing

Front derailleur

Front chainwheel

Bottom bracket

Chain

Bottom bracket cable guide

OT-SP40

FD-M390

FC-M391 / FC-M391-8

BB-UN26 (-K) / BB-ES25 (-K)

CN-HG53

FD-M360 / M311 / M190A / M190 / M191

FC-M311 / FC-M311-8 / FC-M171 / FC-M131

CN-HG50 / CN-HG40

SM-SP18 / SM-BT18 / SM-SP17 / SM-BT17

SIS 9-gears

SIS 3-gears

ST-M390 / SL-M390 / ST-EF65

SIS 8 / 7-gears

SIS 3-gears

ST-EF65

Gears

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

X

X

FC-M311 / FC-M311-8

FC-M171 / M131

Specifications

FD-M360

FD-M311

FD-M190A

FD-M190

FD-M191

42 / 48T

20T

20T

18T

18T

20T

10T

10T

8T

8T

10T

66°- 69°

63°- 66°

42 / 48T

42T

42T

48T

Installation band diameters: 

S [28.6 mm], M [31.8 mm], L [34.9 mm] (Use the adapter for S and M sizes.)

Front Derailleur

Model number

Applicable to both normal type and top route type

TOP SWING

Applicable front chainwheel

Top gear tooth

Front chainwheel tooth difference

Min. difference between top and intermediate

Front derailleur installation band diameter

Chainstay angle (

a

)

Applicable bottom bracket

Applicable chain line

X = Available

63°- 66° / 66°- 69°

47.5 / 50 mm

X

X

BB-UN26 (-K) / BB-ES25 (-K)

FC-M391 / M391-8

FD-M390

44 / 48T

22T

12T

S, M, L

63°- 66° / 66°- 69°

50 mm

X

X

X

X

X

X

X

Chainstay angle

Model number

Chainwheel tooth combination

Bolt circle diameter

Crank arm length

Pedal thread dimensions

Applicable bottom bracket

Chainwheel

FC-M311

FC-M311-8

FC-M171

FC-M131

BC 1.37" X 24 T.P.I. (68, 73 mm)

Model number

Stamped marking

Spindle length

Chain line

Thread dimensions

Bottom Bracket

47.5 mm + t*

47.5 mm

BB-ES25 (-K)

126 (-K)

126 mm

50 mm

Installation of the lever

5 mm Allen key

Tightening torque: 

6 - 8 N·m {53 - 69 in. lbs.}

Tightening torque : 

5 N·m {44 in. lbs.}

Use a handlebar grip with a maximum outer diameter of 
36 mm (M390) / 32 mm (EF65).

• 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.

ST-M390 / ST-EF65

5 mm Allen key

SL-M390

2. Connecting and securing the inner cable

<ST-M390 / SL-M390>

Operate lever (B) two times or
more, and check on the indicator
that the lever is at the lowest
position. Then remove the inner
hole cover and connect the inner
cable.

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.

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.

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

Outer end cap

Marking

Lever (B)

Inner hole cover

Inner cable

Inner hole cover

<ST-EF65>

Operate lever (B) two times or more to set the lever to the lowest
position. Remove the screw, and then remove the cover. Pull out the
inner cable as shown in Figure, and then install the new inner
cable.

Lever (B)

Screw

Cover

Inner cable

Tightening torque: 

0.3 - 0.5 N·m {3 - 4 in. lbs.}

Normal type

Top route type

Pull

Pull

3. Top adjustment

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

A

B

Outer casing adjustment barrel

5. Troubleshooting chart

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

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

Chain position

Smallest sprocket

Largest chainring

A

B

4. Adjustment of the intermediate chainring

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.

Chain position

Largest sprocket

Intermediate

chainring

Chain

Chain guide 

inner plate

If the chain falls to the crank
side.

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

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

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

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

If there is interference between
the chain and the front derailleur
inner plate at the largest
chainring.

If there is interference between
the chain and the front derailleur
outer plate at the largest
chainring.

Tighten the top adjustment
screw clockwise (about 1/8
turn).

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

If the intermediate chainring is
skipped when shifting from the
largest chainring.

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

If the chain falls to the bottom
bracket side.

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

Tighten the outer casing
adjustment barrel clockwise 
(1 or 2 turns).

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

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

If there is interference between
the chain and front derailleur
inner plate when the rear
sprocket is shifted to the largest
sprocket when the chainwheel is
at the intermediate chainring
position.

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

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

8 mm Allen key
(FC-M391 / FC-M391-8)

Use a 5 mm Allen key to tighten the wire fixing bolt.
Cut off the excess length of inner cable and then install the
inner end cap.

< FD-M390 / M360 / M190A / M190 / M191 >

< FD-M311 >

Tightening torque :

5 - 7 N·m 

{44 - 60 in. lbs.}

Note: 

Pass the cable through as
shown in the illustration.

M390/M190A/M190

M311

M360/M191

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