3. 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.
4. Outer casing length
(1) Loosen the B-tension adjustment screw until it is in the
position shown in the illustration.
(2) Check that there is enough slack in the outer casing. Next,
align the outer casing with the bottom
edge of the outer casing holder at the
rear derailleur and then cut of any excess
length of outer casing.
Connect the cable to the rear
derailleur and, after taking up
the initial slack in the cable,
re-secure to the rear
derailleur as shown in the
illustration.
SLX
SL-M660
SIS-SP41
RD-M662
SGS / GS
FH-M665
9
CS-HG80
CN-HG73
SM-SP17
Technical Service Instructions
SI-5WM0A-002
RD-M662
Add 2 links (with the chain on both the largest
sprocket and the largest chainring)
Largest
sprocket
Chain
Largest
chainring
Rear derailleur
Series
RAPIDFIRE (Shifting lever)
Outer casing
Rear derailleur
Type
Freehub
Gears
Cassette sprocket
Chain
Bottom bracket guide
In order to realize the best performance, we recommend that the following
combination be used.
Specifications
Model number
Type
Gears
Total capacity
Applicable sprocket combination
Smallest sprocket
Front chainwheel tooth difference
RD-M662
SGS
9
45T
11 - 32T, 11 - 34T
11T
22T
Rear Derailleur
GS
9
35T
11T
22T
Installation of the rear derailleur
5 mm Allen key
Dropout
Bracket
Bracket spindle
Tightening torque :
8 - 10 N·m {70 - 86 in. lbs.}
General Safety Information
WARNING
• If it is difficult to install the wheel, install the quick release lever on the rotor side.
If doing this, make sure that the quick release lever does not interfere with the rotor and that
burns do not occur.
• 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.
•
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 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.
• 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.
• 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 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
Reinforced Connecting Pin
End Pin
Link Pin
g
a -18T
-
S
H
IM
AN
O
HYP
ERG
LID
EC
ag-15T
ag-
13
T
Group marks
1. Top adjustment
Turn the top adjustment screw to adjust so
that the guide pulley is in line with the outer
line of the smallest sprocket when looking
from the rear.
2. Low adjustment
Turn the low adjustment screw so that the
guide pulley moves to a position directly in line
with the largest sprocket.
SIS Adjustment
Top adjustment
screw
Guide pulley
Pull
Less than 30 mm
Tightening torque :
5 - 7 N·m {44 - 60 in. lbs.}
Groove
Note:
Be sure that the cable is
securely in the groove.
Largest sprocket
Low adjustment
screw
Cutting the outer casing
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.
Outer end cap
The sealed cap with
tongue and the rubber
shield should be
installed to the outer
casing stopper of the
frame.
Rubber shield
Rubber shield
Be careful not to bend
Sealed cap with tongue
5. How to use the B-tension adjustment screw
Mount the chain on the smallest chainring and the largest
sprocket, and turn the crank arm to shift gears. Then turn the B-
tension adjustment screw
to adjust so that the guide
pulley does not interfere
with the sprocket but not so
close that it touches the
chain. Next, set the chain
to the smallest sprocket
and repeat the above to
make sure that the pulley
does not touch the
sprocket.
<Checking the distance between the largest sprocket
and the guide pulley>
Set the rear derailleur to the lowest gear
position, stop the wheel from turning, and then
check that the distance from the edge of the
guide pulley to the edge of the largest sprocket
is within the range of 5 - 6 mm. Turn the crank
arm to shift gears and check that there is no
roughness in the feel. If the number of teeth for the cassette
sprocket is changed, carry out this setting again.
Largest sprocket
Smallest sprocket
B-tension
adjustment screw
6. SIS Adjustment
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.
When shifting to
3rd
Tighten the outer casing
adjustment barrel until the
chain returns to the 2nd
sprocket. (clockwise)
Loosen the outer casing
adjustment barrel until the
chain touches the 3rd sprocket
and makes noise. (counter
clockwise)
When no sound
at all is heard
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.
For the best SIS performance, periodically lubricate all
power-transmission parts.
Adjustment bolt
Adjustment bolt
Note:
The distance between the outer stopper to the outer casing
holder of the rear derailleur may change when the rear
suspension moves, so determine the length of the outer casing at
the point where this length is at its greatest.
Note:
Set the inner cable so that it protrudes by a
length of less than about 30 mm, and then
check that the inner cable does not interfere with
the spokes of the wheel. Stop the wheel from
turning while carrying out this step.
Please note: specifications are subject to change for improvement without notice. (English) © May 2008 by Shimano Inc. XBC SZK Printed in Japan.
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
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.
Outer casing
Outer casing holder
Guide pulley
Outer line of
smallest sprocket
(2)
(1)
Note:
Periodically check that there is
no gap between the dropout and the
bracket as shown in the illustration.
If there is a gap between these two
parts, problems with gear shifting
performance may occur.
