SL-M660 - Canyon

ITEM 

NO. 

1 

2 

3 

4 

5 

6 

7 

8 

9 

1 

SHIMANO 

CODE NO. 

Y-6PZ 98010 

Y-6PZ 98020 

Y-6CD 33000 

Y-6PZ 98030 

Y-6PZ 98040 

Y-6PZ 98070 

Y-6MP 01100 

Y-6NX 51100 

Y-6MP 98080 

Y-8U9 14000 

Y-6CZ 98050 

Y-6PZ 98080 

Y-6PZ 98090 

DESCRIPTION 

R.H. Shifting Lever Unit 

L.H. Shifting Lever Unit 

Inner Hole Cap 

R.H. Indicator Unit 

L.H. Indicator Unit 

Cable Adjustting Bolt Unit 

R.H. Bracket 

L.H. Bracket 

SL Fixing Bolt (M4) 2pcs. 

Clamp Bolt (M6 x 15) 

Main Lever Cover & Fixing Screw 

R.H. Base Hole Cap & Bolt Unit 

L.H. Base Hole Cap & Bolt Unit 

A: Same parts. 

B: Parts are usable, but differ in materirals, appearance, finish, size, etc. 

Absence of mark indicates non-interchangeability. 

SHIMANO SLX Mega-9 Rapidfire Lever 

SL-M660 

w/o Indicator Type w/o Indicator Type 

9 

7 

2 

5 

For Left Hand For Right Hand 

3 3 

6 

4 

8 8 

4 

6 

5 

A 

B 

B 

B 

A 

A 

B 

B 

7 

2 

SL-M770 


9 

1 


INTERCHANGE- 

ABILITY 

A 

B 

B 

A 

B 

B 

A 

0803-2797

General Safety Information 

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. 

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. 

• 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. 

• 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 - 15 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. 

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 

Chain tool 

TL-CN32 / TL-CN27 


Technical Service Instructions SI-6PZFA-002 

Front Drive System 

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

Series SLX 

Rapidfire (Shifting lever) SL-M660 

Outer casing SIS-SP41 

Type Triple 

Front derailleur FD-M660 / FD-M661 / FD-M660-E 

Front chainwheel FC-M660 

Chain CN-HG73 

Bottom bracket cable guide SM-SP17 

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. 

6.5mm 

7.1mm 

Silver 

Black 

Reinforced Connecting Pin 

End Pin Link Pin 

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 arm 

fixing bolt at periodic intervals. (BB-FC, FC-PD) 

• 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. 

• 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 left and right adapters before installing them. 

• For smooth operation, use the specified outer casing and the bottom bracket cable guide. 

• For details on the SIS adjustment method for double chainwheel specifications, refer to 

the Service Instructions for the FD-M665/667 front derailleur. 

• 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. 

• 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. 

• 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. 

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

Front 

chainrings 

Rear 

sprockets 

Outer casing holders 

Double 

FD-M665 / FD-M667 / FD-M665-E 

FC-M665 

Industrieweg 24, 8071 CT Nunspeet, The Netherlands Phone: +31-341-272222 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. 2008 by Shimano Inc. XBC SZK Printed in Japan. 

Specifications 

Front Derailleur 

Model number 

Normal type 

Top route type 

Front chainwheel tooth difference 

Min. difference between top and intermediate 

Front derailleur installation band diameter 

Chainstay angle (a) 

Applicable chain line 

Applicable front chainwheel 

Chainwheel 

Model number 

Applicable front derailleur 

Chainwheel tooth combination 

Bolt circle diameter 

Crank arm length 

Chain line 

Bottom bracket shell width 

Thread dimensions 

Gear shifting operation 

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 

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. 

68 mm 

Band Type Bracket Type 

For bracket type 

Install as shown in the illustration. 

Adapter 

Spacer 

FA FA 

2.5 mm 

73 mm 73 mm 

FA 

FA 

Front Derailleur 

Bolt 

Tightening torque : 

35 - 50 N·m {305 - 435 in. lbs.} 

68 mm 

FA E-type 

bracket 

FA 

Front Chainwheel 

Adapter 

FA 

Adjust and then install the front derailleur as shown in the illustration. 

Do not remove the Pro-Set alignment block at this time. 

FC-M665 

Outer edge of bash 

guard should come 

within this range 

To shift from a large chainring to a smaller chainring 

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. 

Lever (A) initial position Lever (B) 

2-way release 

Installation of the Front Chainwheel and Front Derailleur 

Follow the procedure in the figure. 

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

(counterclockwise thread) and the left adapter (clockwise 

thread). 

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

3 Insert the right crank unit. 

4 Set section A of the left crank into the axle of the right crank 

unit where the groove is wide. 

5 Use the TL-FC16 to tighten the cap. 

Tightening torque: 0.7 - 1.5 N·m {6 - 13 in. lbs.} 

■ Spacer installation method 

(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. 

FD-M660-E FD-M660 FD-M661 FD-M665/M667 FD-M665-E 

X 

X 

22T 

12T 

– 

66° - 69° 

X 

X 

22T 

12T 

S, M, L 

66° - 69° 

50 mm 50 mm 

44T 44T / 48T 

TL-FC16 

Push up 

X X 

X X 

22T 14T 

12T – 

S, M, L S, M, L 

66° - 69° 65° - 71° 

50 mm 50 mm 

44T 36T 

X = Available 

X 

X 

14T 

– 

– 

65° - 71° 

50 mm 

36T 

Triple (FD-M660-E/M600/M661) 

5 

6 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. 

Note : Each of the bolts should be evenly and equally 

tightened to 12 - 15 N·m {106 - 132 in. lbs.}. 

Plate pin 

Stopper plate 

FC-M660 

Gear teeth should 

come within this range 


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

104 mm / 64 mm 

170 mm, 175 mm 

50 mm 

68, 73 mm 

BC1.37 (68, 73mm) 

4 

(A) 

6 

TL-FC32 

2 

Pro-Set gauge 

Pro-Set gauge 

Installation band diameters: 

S (28.6 mm), M (31.8 mm), L (34.9 mm) 

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. 

Chainstay angle 

Wide groove area 

FC-M665 

Double (FD-M665/M667) 

36-22T 

104 mm / 64 mm 

170 mm, 175 mm 

50 mm 

68, 73 mm 

BC1.37 (68, 73mm) 

1 

Inner cover 

Note : 

Set the stopper plate in 

the right direction as 

shown in illustration. 

3 

Pro-Set alignment block 

■ Note 

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. 


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. 

FC-M665 

The inner surface of the bash guard 

should be at the flat part of the chain 

guide outer plate. 


5 - 7 N·m {44 - 60 in. lbs.} 

Chain length 

Add 2 links (with the chain on both 

the largest sprocket and the largest 

chainring) 

Installation of the lever 

If not using the indicator, this shifting lever can be installed either 

on the inside or the outside of the brake lever. 

If adjusting the position, remove the indicator, and then be sure 

to secure it in the new position with the two fixing bolts. 

• 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. 

SIS Adjustment (Triple) 

Cutting the outer casing 

After cutting the outer casing, make the end 

round so that the inside of the hole has a 

uniform diameter. 

Chainwheel 

(largest chainring) 

Chain guide 

Largest sprocket Largest chainring 

Chain 

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. 

Chain position 

Largest 

sprocket 

Pro-Set alignment 

block 

Smallest 

chainring 

4 mm Allen key 

Outboard Inboard 


FD-M661 

Chain guide 

inner plate 

Chain 

2. Connecting and securing the inner cable 

Operate lever (B) two times or more, Lever (B) 

and check on the indicator that the 

lever is at the lowest position. Then 

remove the inner hole cover and 

connect the inner cable. 

Attach the same outer 

end cap to the cut end of 

the outer casing. 

A 

Inner hole cover 

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. 


0.3 - 0.5 N·m {3 - 4 in. lbs.} 

Use a handlebar grip with a 

maximum outer diameter of 36 mm. 

Outer end cap 


5 N·m {44 in. lbs.} 


2.5 N·m {22 in. lbs.} 


B 

Inner cable 

B A 

Low adjustment 

screw 

FD-M660 


• FD-M660 

< Normal type > 

• FD-M661 

< Normal type > 

After taking up the initial slack in the cable, re-secure to the front 

derailleur as shown in the illustration. 

Normal type Top route type 


Smallest 

sprocket 


Largest 

sprocket 

Pull 

3. Top adjustment 

Set so that the clearance 

between the chain guide outer 

plate and the chain is 0 - 0.5 

mm. 

Largest 

chainring 

Intermediate 

chainring 

FD-M660 

FD-M661 

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. 

If the chain falls to the crank 

side. 

If shifting is difficult from the 

intermediate chainring to the 

smallest chainring. 

If there is interference between 

the chain and the front derailleur 

inner plate at the largest 

chainring. 


the chain and the front derailleur 

outer plate at the largest 

chainring. 

If the intermediate chainring is 

skipped when shifting from the 

largest chainring. 

If the chain falls to the bottom 

bracket side. 

If the lever is stiff when shifting 

from the intermediate chainring 

to the largest chainring 

Pull 

Chain guide 

inner plate 

Chain 

B 

Top adjustment 

screw 

Chain guide 

outer plate 

Chain 

B 

A 

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.) 

If shifting is difficult from the 

intermediate chainring to the 

largest chainring. 

Note: 

Pass the cable 

through as shown 

in the illustration. 


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. 

Wire 

fixing bolt 

Note: 

Pass the cable 

through as shown 

in the illustration. 

Wire 

fixing bolt 


5 - 7 N·m {44 - 60 in. lbs.} 

< Top route type > 


< Top route type > 

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 



Tighten the top adjustment screw 





Loosen the outer casing 

adjustment barrel 

counterclockwise (1 or 2 turns). 

Tighten the outer casing 

adjustment barrel clockwise 

(1 or 2 turns). 

Tighten the low 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. 

A

SI-6PZRA-003-00 

General Safety Information 

WARNING 

• 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. 

• 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. 

• 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. 

• 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. 

Note 

• 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 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. 

• Always be sure to use the sprocket set bearing the same group marks. Never use in combination with a sprocket bearing a 

different group mark. 

Group marks 

• 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. 

• For smooth operation, use the specified outer casing and the bottom bracket cable guide. 

• 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. 

• 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. 

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 

Chain tool 



Technical Service Instructions SI-6PZRA-003 

Series SLX 

RAPIDFIRE (Shifting lever) SL-M660 

Outer casing SIS-SP41 

Rear derailleur RD-M662 

Type SGS / GS 

Freehub FH-M665 

Gears 9 

Cassette sprocket 

Chain 

Bottom bracket guide 

Rear Drive System 

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

6.5mm 

7.1mm 

CS-HG80 

CN-HG73 

SM-SP17 

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 2009 by Shimano Inc. XBC SZK Printed in Japan. 

Silver 

Black 

Reinforced Connecting Pin 

End Pin Link Pin 

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. 

g 

a -18T 

SHIMANO HYPERGLI DE C 

- 

ag-15T 

ag -13T 

Specifications 

Rear Derailleur 

Model number 

Type 

Gears 

Total capacity 

Largest sprocket 

Smallest sprocket 

Front chainwheel tooth difference 

Cassette sprocket tooth combination 

Model number 

CS-HG80 

ba 

Group name 

ba 

ba 

ar 

au 

Installation of the sprockets 

32T 

28T 

34T 

24T 

30T 

26T 

ap as 

ap as 

ar 

ba 

ap ba 

ba 

aQ 

ap 

aQ 

ap 

ar ba 

21T 

18T 

Gears 

14T 

as 

16T 

ap as 

9 

9 

23T 20T 

17T 

aQ 

as 

ar 

12T 

ba 

9S 

11T aQ 

ba 

ar 

15T 

as 

au 

A AN 

J P 

Y 

H P 

13T 

ER G LI D 

11T 

E 

M 9 0 

as au 

CS- 6 

11T 

as au 

A AN 

J P 

Y 

H P 

ER G LI D 

11T 

E 

M 9 0 

CS- 6 

RD-M662 

SGS GS 

45T 

34T 

11T 

22T 

Tooth combination 

11, 12, 14, 16, 18, 21, 24, 28, 32T 

11, 13, 15, 17, 20, 23, 26, 30, 34T 

9 

Freehub 

Model number 

Gears 

No. of spoke holes 

35T 

34T 

11T 

22T 

FH-M665 

These Service Instructions describe the operation method when using the RAPIDFIRE SL-M660 in combination with the RD-M662 top 

normal-type rear derailleur. If using in combination with a reverse spring-type derailleur, the operations and indicator displays will be 

reversed. 

Gear shifting operation 

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 sprocket to a larger sprocket 

(Lever A) 

To shift one step only, press lever (A) to the (1) position. To shift two 

steps at one time, press to the (2) position. 

CS-HG80 (ar) 

CS-HG80 (au) 

Lever (A) initial position 

Sprocket spacer 

Lock ring 

Lock ring spacer 

Lock ring spacer 

Lock ring 

For each sprocket, the surface that has the group mark should face outward and be 

positioned so that the wider part of each sprocket and the A part (where the groove width 

is wide) of the freewheel body are aligned. 

Chain length on bicycles 

with rear suspension 

The length of A will vary depending on the movement of the rear 

suspension. Because of this, an excessive load may be placed on 

the drive system if the chain length is too short. Set the length of 

the chain by adding two links to the chain when the rear suspension 

is at a position where dimension "A" is longest and the chain is on 

the largest sprocket and the largest chainring. If the amount of 

movement of the rear suspension is large, the slack in the chain 

may not be taken up properly when the chain is on the smallest 

chainring and smallest sprocket. 

A 

A' 

Largest 

sprocket 

Chain 

Largest 

chainring 

Add 2 links (with the chain on 

both the largest sprocket and 

the largest chainring) 

9 

36 / 32 

To shift from a large sprocket to a smaller sprocket 

(Lever B) 

Press lever (B) once to shift one step from a larger to a smaller 

sprocket. 

Installation of the lever 

Use a handlebar grip with a maximum 

outer diameter of 36 mm. 

• For installation of the sprockets, use 

the special tool (TL-LR15) to tighten 

the lock ring. 

Tightening torque: 

30 - 50 N·m {261 - 434 in. lbs.} 

• To replace the sprockets, use the 

special tool (TL-LR15) and TL-SR21 

to remove the lock ring. 

TL-LR15 

Disassembly 


5 N·m {44 in. lbs.} 4 mm Allen key 

Lever (B) 

2-way release 

Lock ring 

Tool 

(TL-SR21) 

If not using the indicator, this shifting lever can be installed either 

on the inside or the outside of the brake lever. 

If adjusting the position, remove the indicator, and then be sure 

to secure it in the new position with the two fixing bolts. 

Inboard Outboard 


A 

The groove is wide at 

one place only. 


• 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. 

• 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. 

ac-14T 

Wide part 


2.5 N·m {22 in. lbs.} 

Refer to the RD-M662 (Rear Derailleur) Service Instructions for 

details on installing the rear derailleur and SIS adjustment. 

Connection and securing of the inner 

cable 

Operate lever (B) eight times or 

more, and check on the indicator 

that the lever is at the highest 

position. Then remove the inner hole 

cover and connect the inner cable. 

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. 


Replacing and installing the indicator 

Lever (B) 


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. 

Attach the same outer 

end cap to the cut end 

of the outer casing. 

The sealed cap with 

tongue and the rubber 

shield should be 

installed to the outer 

casing stopper of the 

frame. 

Outer end cap 

Be careful not to bend 

Sealed cap with tongue 

Rubber shield 

Rubber shield 

* If the rear derailleur moves to a large degree, such as in 

bicycles with rear suspension, it is recommended that you 

replace the cap with the 

accessory aluminum cap. 

Derailleur side 

The end of the outer casing 

which has the aluminum cap 

should be at the derailleur side. 

Aluminum cap 

Replacement of the freewheel body 

After removing the hub 

axle, remove the freewheel 

body fixing bolt (inside 

the freewheel body), 

and then replace the 

freewheel body. 

Install the rubber seal as 

the last item after replacing 

the freewheel body, and make 

sure that it does not get 

clamped by the waterproof cap. 

Disassembly and reassembly should only be carried out when 

removing or replacing the indicator. For the front, the direction of 

rotation when removing and installing is opposite to the position of 

the needle. 

[Removal] 

1. Remove the two indicator fixing screws which are securing the 

indicator. 

2. Lift up the lens as shown in the illustration, and then disengage 

the hooked part and remove the indicator unit. 

Hooked part 

Rubber seal 

Indicator fixing screws 

Lens 

Freewheel body Freewheel body fixing bolt 

Indicator unit 


(TL-WR37) 

Disassembly 

Note: Do not attempt to 

disassemble the 

freewheel body, 

because it may result 

in a malfunction. 

Assembly 


35 - 50 N·m {305 - 434 in. lbs.} 

[Installation] 

3. Operate lever B eight times or 

more to set the lever to the top 

Pin 

position. 

4. Check that the indicator needle is 

pointing to the left, and align the 

pin at the bottom of the indicator 

and the boss on the indicator with 

the o marks on the shifting lever 

unit. Then insert the indicator into 

the shifting lever unit as shown in 

the illustration, starting with the 

boss and then followed by the pin 

in the reverse order to removal. 

5. Tighten the two indicator fixing screws. 

6. Check the operation of the indicator. If it does not operate 

correctly, reinstall it while paying particular attention to steps 3 

and 4. 

 

1. Remove the indicator bracket protective cover which is attached 

to the indicator, starting from the shorter tab as shown in the 

illustration. 

2. First insert the tab of the indicator bracket protective cover into 

the slot which does not have a o mark, and then set it onto the 

shifting lever unit and secure it with the indicator fixing screw. 

Indicator unit 

Indicator bracket 

protective cover 

Shorter tab 


0.2 N·m {1 in. lbs.} 

1mm 


0.2 N·m {1 in. lbs.} 

Indicator bracket 

protective cover 

Shifting lever unit 

NOTE: 

Do not push the brake lever against the indicator cover, 

otherwise it may cause problems with the operation of the 

needle.

SL-M660 - Canyon

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