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SERVICE INSTRUCTIONS

SI-53Z0C

Before use, read these instructions carefully, and follow them
for correct use.

Rear Derailleur

RD-6500

Specifications

1. Top adjustment

Turn the top adjustment screw to adjust so that the
guide pulley is below the outer line of the smallest
sprocket when looking from the rear.

Stroke adjustment and cable
securing

1

2

1

2

Guide pulley

Outer line of
smallest sprocket

Top adjustment

screw

3. Low adjustment

Turn the low adjustment screw so that the guide
pulley moves to a position directly in line with the
largest sprocket.

1

1

2

2

Largest sprocket

Guide pulley

Low adjustment

screw

4. How to use the B-tension adjustment screw

Mount the chain on the smallest chainring and the
largest sprocket, and turn the crank arm backward.
Then turn the B-tension adjustment screw to adjust
the guide pulley as close to the sprocket as possible
but not so close that it touches.  Next, set the chain to
the smallest sprocket and repeat the above to make
sure that the pulley does not touch the sprocket.

1

2

1

2

2

1

B-tension

adjustment 

screw

Largest sprocket

Smallest sprocket

5. SIS Adjustment

(1) 

Operate the shifting lever to move the chain from
the top gear to the 2nd gear.

* If the chain will 

not move to the 2nd gear,

turn

the outer casing adjustment barrel to increase the
tension-----

➀ 

(counter  clockwise)

* If the chain 

moves

past the 2nd gear,

decrease the
tension---

(clockwise)

3rd   2nd   Top

Outer casing
adjustment
barrel

(2) 

Next with the chain on the 2nd gear, increase the
inner cable tension 

① 

while turning the crank arm

forward. Stop turning the outer casing adjustment
barrel 

just before the chain makes noise against

the 3rd gear.

This completes the adjustment.

Counter-clockwise 

Clockwise 

Outer casing
adjustment barrel

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

Note

• For smooth operation, always be sure to use the

specified outer casing and the bottom bracket cable
guide.

• Grease the inner cable and the inside of the outer

casing before use to ensure that they slide properly.

• The tension pulley has a mark which indicates the

direction of rotation.  The side with the arrow is the
front side.

• Because the high cable resistance of a frame with

internal cable routing would impair the SIS function,
this type of frame should not be used.

• The end of the outer casing which has the 

aluminum cap should be at the 
derailleur side.

• For any questions regarding methods of installation,

adjustment, maintenance or operation, please contact
a professional bicycle dealer.

For the best SIS performance, periodically lubricate
all power-transmission parts.

Sprockets

18

27

RD-6500

RD-6500-GS

SS

GS

FC-6500

FC-6503

Cassette sprocket

Series

ULTEGRA

Shifting lever

ST-6500 / SL-7700 / SL-BS77

Rear derailleur

Type

Front chainwheel

Freehub

Bottom bracket cable guide

Chain

FH-6500

CS-6500

CN-HG92 / CN-7700

SM-SP17

Outer casing

SIS-SP40

27T

14T

Type

SS

GS

Total capacity

29T teeth or less

Largest sprocket

28T

Smallest sprocket

11T

22T

37T teeth or less

11T

Front chainwheel tooth
difference

Chain length

GS type, SS type

Chain

90°

Guide pulley

Tension pulley

Right angle to the ground

Smallest sprocket

Largest chainring

2. Connection and securing of

the cable

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.

Note: 

Be sure that the
cable is securely
in the groove.

Groove

Pull

Tightening torque: 5 - 7 Nm 

{44 - 60 in. lbs.}

Installation of the rear derailleur

When installing, be careful that deformation is not
caused by the B-tension adjustment screw coming into
contact with the dropout tab.

5 mm Allen key

B-tension
adjustment screw

Bracket spindle tightening torque: 

8 - 10 Nm {70 - 86 in. lbs.}

Dropout tab

One Holland Irvine CA 92618  U.S.A.   Phone 949-951-5003

®

Industrieweg 24 NL-8071 CT Nunspeet Holland  Phone 31-341-272222

77 Oimatsu-cho 3-cho Sakai Osaka 590-8577 Japan  Phone 0722-23-3243

These service instructions are printed on
recycled paper and can be recycled again

Please note: specifications are subject to change for improvement 
without notice. (English)
©Jun. 1997 by Shimano Inc.  XBC SZK Printed in Japan. 

4-mm cap

Plastic cap or 4-mm cap

Aluminum cap

Derailleur side

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