SI-6MM0B - Shimano

SI-6MM0B - Shimano
General Safety Information
In order to realize the best performance, we recommend that the following
combination be used.
“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.”
• 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.
• 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 recheck 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.
1. Adjust so that the clearance between the chain guide outer plate
and the large gear is 1 - 3 mm before installing.
Rapidfire (Shifting lever)
SL-S500 (-L)
Outer casing
Front derailleur
Front chainwheel
Clearance: 1 - 3 mm
CN-HG53 / CN-HG73
Bottom bracket cable guide
SM-SP17 / SM-BT17
Tightening torque:
5 - 7 N·m {44 - 60 in. lbs.}
After taking up the initial slack in
the cable, re-secure to the front
derailleur as shown in the
1. Remove the two cover fixing
Tightening torque :
0.3 - 0.5 N·m {3 - 4 in. lbs.}
2. Remove the indicator unit as
Lever (B)
Front Derailleur
2. The level section of the chain guide outer plate should be directly
above and parallel to the largest chainring.
Band type / Brazed on type
S (28.6mm), M (31.8mm)
Front derailleur installation band diameter
Chainstay angle (C)
61° - 66°
Chain line
3. Secure using a 5mm Allen key.
(largest chainring)
Chainstay angle
Tightening torque:
5 - 7 N·m {44 - 60 in. lbs.}
Front chainwheel
Model number
Chainwheel tooth combination
50 - 34T
Bolt circle diameter
110 mm
Crank arm length
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.
3. Operate lever (B) two times or more to set the lever to the
Chain guide
Attach the same outer end cap to the cut end of the outer
lowest position.
4. After checking that the indicator needle is at the right edge,
install the indicator from directly above.
Outer end cap
165, 170, 175 mm
Pedal threads
B.C. 9/16" x 20T.P.I. (English thread)
Applicable chain
CN-HG53 / CN-HG73
Chain line
Chain length
43.5 mm
68 mm (1.37 X 24 T.P.I.), 70 mm (M36 X 24 T.P.I.)
With the chain on the large chainring,
add two links to the chain.
3. Top stroke adjustment
(18T or 20T)
Large chainring
Set the chain onto the CS-S500 sprocket (sprocket with
chainguard), and then shift to the large chainring.
(18T or 20T)
Large chainring
Installation of the chainrings
Outer side
5. Check the operation of the indicator. If it does not operate
correctly, re-install the indicator by while taking particular
note of steps 3. and 4.
Do not disassemble the indicator and shifting lever unit, as this
may damage them or cause mis-operation.
Smooth shifting will not be possible if the chainrings are incorrectly installed, so be sure to install the
chainrings in the correct positions.
Inner side
(1) Stroke adjustment screw adjustment
Use the top adjustment screw to adjust the position of
the chain guide plate (so that the gaps on the left and
right sides of the chain are even).
Mounting the shifting lever
Use a handlebar grip with a maximum outer diameter of 32 mm.
Top adjustment
o mark
Crank arm
Crank arm
Chain drop
prevention pin
Tightening torque :
5 N·m {44 in. lbs.}
With the marked surface of the larger chainring
facing out, set the larger chainring so that the
chain drop prevention pin is lined up with the
crank arm position.
With the marked surface of the smaller chainring
facing away from the crank arm, set the chainring
so that the o mark is lined up with the crank arm
position. For chainrings without a marked
surface, align using the projection on the inside
of the chainring.
Installation of the front chainwheel
Chain guide plate
5 mm Allen key
• 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
(2) Adjustment of the inner cable tension
Turn the adjustment barrel of the shifting lever to adjust
the inner cable tension to the correct tension.
* If too much tension is applied to the cable, lever
operation may become stiff.
SIS adjustment
Follow the procedure in the figure.
1. Low adjustment
1, 2 Use the special tool TL-FC32/36 to install the right adapter (counterclockwise thread) and the
Set so that the clearance between the chain guide inner plate and
the chain is 0 - 0.5 mm.
left adapter (clockwise thread).
Tightening torque: 35 - 50 N·m {305 - 435 in. lbs.}
Insert the right crank unit.
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.
(18T or 20T)
Set section A of the left crank into the axle of the right crank unit where the groove is wide.
Front shifting
Low adjustment
• Right adapter
Chain guide
inner plate
Operate lever (B) 2 or more times,
check on the indicator that the low
position is correct, and then secure
the inner cable.
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 the small chainring to the large
chainring (Lever A)
When lever (A) is pressed once, there is a shift of one
step from the small chainring to the large chainring.
2. Connecting and securing the inner cable
clockwise thread for 70 mm
[M36] bottom brackets
Adjustment barrel
Small chainring
Use the TL-FC16/18 to tighten the cap.
Tightening torque: 0.7 - 1.5 N·m {6 - 13 in. lbs.}
Lever (A) initial position
Lever (B)
Wide groove area
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
Inner hole cover
SL-S500 (-L)
Cover fixing screws
screws that are securing the
Chain guide outer plate
Technical Service Instructions
Replacement of the indicator
Disassembly and reassembly should only be carried out when
replacing the indicator.
shown in the illustration.
Bottom bracket shell width (Thread dimensions)
• 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
• 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
• Apply grease to the left and right adapters before installing them.
Outer casing holders
• For smooth operation, use the specified outer casing and the
bottom bracket cable guide.
• 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 DURAACE 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.
• Be sure to use only the applicable chain and bottom bracket.
• Make sure that the chainring combination matches the front chainwheel tooth
configuration in the Product specifications table. If other combinations are used, the
distance between the chainrings will be incorrect and the chain might slip off and get
caught in between them.
• If the bottom bracket shell is not parallel, gear shifting performance will drop.
• To ensure the best performance, be sure to use only the specified type of chain. The
wide type of chain cannot be used.
• 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
• 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.
While pulling the inner cable, tighten the wire fixing bolt with
a 5 mm allen key to secure the cable.
Installation of the front derailleur
Shifting lever
Inner cover
Plate pin
Bottom bracket shell
Note :
Stopper plate
Push up
Set the stopper plate in the right
direction as shown in illustration.
Install the inner hole cover by
turning it as shown in the illustration Unit cover
until it stops.
Do not turn it any further than this,
Feed lever
otherwise it may damage the screw
In addition, if the unit cover
Inner hole cover
becomes bent, it may cause the unit
cover to get in the way of the feed
lever and prevent the feed lever from operating correctly.
If the feed lever does not return correctly, loosen the inner hole
cover slightly, and then move the feed lever and the unit cover apart
and check if this improves the returning of the feed lever.
To shift from the large chainring to the small
chainring (Lever B)
When lever (B) is pressed once, there is a shift of one
step from the large chainring to the small chainring.
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
Levier (B)
* Service Instructions in further languages are available at :
Please note: specifications are subject to change for improvement without notice. (English) ©
Sep. 2009 by Shimano Inc. XBC SZK Printed in Japan.
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