Shimano FD-RX810 User manual

(English)
Dealer's Manual
ROAD MTB Trekking
City Touring/
Comfort Bike URBAN SPORT E-BIKE
FRONT DERAILLEUR
GRX
FD-RX810
FD-RX400
DM-GAFD001-00

2
CONTENTS
CONTENTS .................................................................................2
IMPORTANT NOTICE ..................................................................3
TO ENSURE SAFETY...................................................................4
LIST OF TOOLS TO BE USED ......................................................6
INSTALLATION/REMOVAL .........................................................7
Installing the front derailleur................................................................7
• Installing the backup plate ...................................................................................................... 7
• Installing the front derailleur .................................................................................................. 9
• If using a band adapter (SM-AD91) to install the front derailleur...................................... 12
ADJUSTMENT ..........................................................................15
Installing the inner cable and adjusting gear shifting ......................15
• Securing the cable .................................................................................................................. 15
• Adjusting cable tension ......................................................................................................... 19
• Top adjustment....................................................................................................................... 20
• Low adjustment...................................................................................................................... 22
• Handling the cable end.......................................................................................................... 23
• Checking gear shifting and fine tuning................................................................................ 24
MAINTENANCE........................................................................25
Replacing the skid plate ......................................................................25
• Removing the skid plate ........................................................................................................ 25
• Installing the skid plate.......................................................................................................... 25

3
IMPORTANT NOTICE
IMPORTANT NOTICE
• This dealer's manual is intended primarily for use by professional bicycle mechanics.
Users who are not professionally trained for bicycle assembly should not attempt to
install the components themselves using the dealer's manuals.
If any part of the information on the manual is unclear to you, do not proceed with the
installation. Instead, consult a place of purchase or a bicycle dealer for their assistance.
•Make sure to read all owner's manuals included with the product.
•Do not disassemble or modify the product other than as stated in the information
contained in this dealer's manual.
•All owner's manuals and dealer's manuals can be viewed on-line our website (http://si.
shimano.com).
•For consumers who do not have easy access to the internet, please contact a SHIMANO
distributor or any of the SHIMANO offices to obtain a hardcopy of the User's Manual.
•Please observe the appropriate rules and regulations of the country, state or region in
which you conduct your business as a dealer.
For safety, be sure to read this dealer’s manual thoroughly before use, and
follow it for correct use.
The following instructions must be observed at all times in order to prevent personal injury
and physical damage to equipment and surroundings.
The instructions are classified according to the degree of danger or damage which may occur
if the product is used incorrectly.
DANGER Failure to follow the instructions will result in death or serious
injury.
WARNING Failure to follow the instructions could result in death or
serious injury.
CAUTION Failure to follow the instructions could cause personal injury or
physical damage to equipment and surroundings.

4
TO ENSURE SAFETY
TO ENSURE SAFETY
WARNING
• Be sure to follow the instructions provided in the owner's manual when installing the
product.
It is recommended to use SHIMANO genuine parts only. If parts such as bolts and nuts
become loose or damaged, the bicycle may suddenly fall over, which may cause serious
injury.
In addition, if adjustments are not carried out correctly, problems may occur, and the
bicycle may suddenly fall over, which may cause serious injury.
•Be sure to wear safety glasses or goggles to protect your eyes while performing
maintenance tasks such as replacing parts.
•After reading the dealer's manual thoroughly, keep it in a safe place for later reference.
Be sure to also inform users of the following:
•Be careful not to let the hemming of your clothes get caught in the chain while riding.
Otherwise, you may fall off the bicycle.
NOTICE
Be sure to also inform users of the following:
•If gear shifting operations cannot be carried out smoothly, clean the derailleur and
lubricate all moving parts.
•When the chain is in any of the positions shown in the figure, the chain may come into
contact with the front chainring or front derailleur and generate noise. If noise is a
problem, shift the rear sprocket to the next largest gear or the one after.
Double
Front chainring
Rear sprocket

5
TO ENSURE SAFETY
•Products are not guaranteed against natural wear and deterioration from normal use
and aging.
•For maximum performance we highly recommend SHIMANO lubricants and maintenance
products.
For Installation to the Bicycle, and Maintenance:
•Use an OT-SP sealed cable and cable guide for smooth operation.
•Grease the inner cable and the sliding portions of the outer casing before use to ensure
that they slide properly.
Do not let dust adhere to the inner cable. If the grease on the inner cable is wiped off,
the application of SIS SP41 grease (Y04180000) is recommended.
•If using a full outer model, the end of the
outer casing with the outer cap (resin type)
should be at the derailleur side.
•If using it in a cold region, use a sealed
outer cap (resin type) to prevent freezing.
Cap with long tongue
Outer cap (resin type)
Derailleur side
•If looseness in the links is so great that gear shifting adjustments cannot be made,
replace the derailleur.
The actual product may differ from the figure because this manual is intended
mainly to explain the procedures for using the product.

6
LIST OF TOOLS TO BE USED
LIST OF TOOLS TO BE USED
The following tools are needed for installation, adjustment, and maintenance purposes.
Tool
2 mm hexagon wrench
4 mm hexagon wrench
5 mm hexagon wrench
Nippers

7
INSTALLATION/REMOVAL
Installing the front derailleur
INSTALLATION/REMOVAL
NOTICE
•With a carbon frame, even the recommended tightening torque may be too tight and
cause damage to the frame, or too loose and not sufficiently attached to the frame.
For the appropriate torque value, consult with the manufacturer of the completed
bicycle or the manufacturer of the frame.
Installing the front derailleur
Installing the backup plate
If installing the front derailleur to a brazed-on type frame, a backup plate must be attached to
the seat tube.
Be sure to install this in order to prevent damage to the frame from the pressure of the front
derailleur support bolt.
Tape
[1]
1. Check the installation location.
Check the position where the support bolt directly touches the frame when the support
bolt of the front derailleur is being adjusted.

8
INSTALLATION/REMOVAL
Installing the front derailleur
2. Install the backup plate.
Avoid positioning the tape that attaches the backup plate to the seat tube in the location
where the support bolt directly touches the frame.
Backup plate
Backup plate
Tape
Support bolt

9
INSTALLATION/REMOVAL
Installing the front derailleur
Installing the front derailleur
1. Adjust the installation height and temporarily attach the front
derailleur to the frame.
Adjust the installation height so that the distance from the tips of the teeth of the largest
chainring is 1 - 3 mm.
1 - 3 mm
Chain guide outer plate
Largest chainring

10
INSTALLATION/REMOVAL
Installing the front derailleur
2. Adjust the position of the chain guide.
Use the low adjustment bolt to align the front end of the chain guide outer plate with
the surface of the largest chainring.
At this point, adjust the chain guide so that its rear end is 0.5 - 1.0 mm inside.
Low adjustment bolt
Front end of chain guide outer
plate
Rear end of chain guide
0.5 - 1 mm
Largest chainring
3. Fix the front derailleur in place.
Mounting bolt
5 - 7 N·m

11
INSTALLATION/REMOVAL
Installing the front derailleur
4. Readjust the chain guide position.
(1) Adjust the support bolt so that the flat portion of the chain guide outer plate is
aligned with the surface of the largest chainring. At that time, make sure that the
support bolt is in contact with the backup plate.
(2) Check the adjustment position by pressing a hexagon wrench or other tool to the flat
portion of the largest chainring.
Support bolt
(1)
(2)
NOTICE
•Make sure not to position the chain guide
as shown in the figure.

12
INSTALLATION/REMOVAL
Installing the front derailleur
If using a band adapter (SM-AD91) to install the front
derailleur
1. Mount the band adapter (SM-AD91) to the front derailleur.
Touch the support bolt to the band adapter.
Support bolt Band adapter
5 - 7 N·m
Fixing bolt
2. Adjust the installation height and temporarily attach the front
derailleur to the frame.
Adjust the installation height so that the distance from the tips of the teeth of the largest
chainring is 1 - 3 mm.
1 - 3 mm
Chain guide outer plate
Largest chainring

13
INSTALLATION/REMOVAL
Installing the front derailleur
3. Adjust the position of the chain guide.
(1) Use the low adjustment bolt to align the flat portion of the chain guide outer plate
with the surface of the largest chainring.
(2) Check the adjustment position by pressing a hexagon wrench or other tool to the flat
portion of the largest chainring.
(1)
Low adjustment bolt
Chain guide
Largest chainring
Largest chainring
(2)

14
INSTALLATION/REMOVAL
Installing the front derailleur
4. Secure the clamp bolt.
Clamp bolt
5 - 7 N·m

15
ADJUSTMENT
Installing the inner cable and adjusting gear shifting
ADJUSTMENT
Installing the inner cable and adjusting gear
shifting
Securing the cable
1. Operate the release lever on the dual control lever and set it to the
initial position (on the smallest chainring side).
2. Remove the link cover.
Link cover
TECH TIPS
•When removing the link cover, lift it up while
rotating it in the direction of the arrow as
shown in the figure.

16
ADJUSTMENT
Installing the inner cable and adjusting gear shifting
3. Pass the inner cable through the front derailleur.
(1) Use the low adjustment bolt to align the flat portion of the chain guide outer plate
with the surface of the largest chainring.
(2) Confirm that the adjustment barrel protrusion is in contact with the input link.
* If it is not in contact, loosen the cable adjustment barrel until it is in contact with the
input link.
(3) Run the cable through as shown in the figure.
* Be sure to run it through the groove.
Inner cableInner cable
Cable adjustment barrel
Cable guide
Adjustment barrel protrusion
Input link
Groove

17
ADJUSTMENT
Installing the inner cable and adjusting gear shifting
TECH TIPS
•Fixing the cable with the chain guide outer
plate and the surface of the largest
chainring aligned, allows you to decrease
the amount of cable tension adjustment
when adjusting gear shifting.
Chain guide
Largest chainring
1 - 3 mm
•For the full outer model and built-in type, make sure that the outer casing is
firmly secured to the outer casing holder before use.
Outer casing holder
Outer casing
Outer cap
(resin type)
NOTICE
•Be sure to check that the inner cable runs through the cable guide.
•If using a full outer model, the end of the outer casing with the outer cap (resin
type) should be at the derailleur side.
•If using it in a cold region, use a sealed outer cap (resin type) to prevent freezing.
Cap with long tongue
Outer cap (resin type)

18
ADJUSTMENT
Installing the inner cable and adjusting gear shifting
4. Temporarily fix the inner cable and remove the initial extension from
the cable.
TECH TIPS
•For a full outer model, operate the lever normally, move the front derailleur
several times, and then remove the initial extension. After removing the initial
extension, secure the cable in place and then adjust.
NOTICE
•Remove the initial extension before installing the chain.
•If a chain is already installed, turn the crank as you operate the lever.
•Do not apply excessive force when operating the lever. Otherwise, the lever
could malfunction.

19
ADJUSTMENT
Installing the inner cable and adjusting gear shifting
5. Secure the inner cable.
Secure while pulling the cable.
6 - 7 N·m
Cable fixing bolt
Adjusting cable tension
1. Align with the gear where the lever is released from the top position
to the T-trim position.
L-trim T-trim
Low
Tension adjustment
point
Top

20
ADJUSTMENT
Installing the inner cable and adjusting gear shifting
2. Adjust the cable tension.
Adjust the cable tension with the cable adjustment barrel or cable adjuster on the frame,
so that the indicator lines of the bracket and input link are aligned.
If the cable was given too much tension and the bolt was loosened, be sure to release it
first in the lowest position. Then, check the indicator position once again at the T-trim
position.
Once the cable tension has been adjusted, install the chain.
Bracket line (indicator)
Cable adjustment barrel
Input link line (indicator)
Top adjustment
1. Align with the gear where the lever is released from the top position
to the T-trim position.
L-trim T-trim
Low
Top adjustment point
Top