Shimano RD-C810 Rear Derailleur Service Instructions

For safety, be sure to read these instructions, and follow them for correct use.

General Safety Information

WARNING

• Do not press the FLIGHT DECK (cycle computer) switch while riding, otherwise you might lose control of your bicycle and have an accident. Stop the bicycle before operating any of the switch.

• Do not pay excessive attention to the computer data while riding, otherwise you might have an accident.

• Do not disassemble the front suspension fork, otherwise the outer tube and the inner tube will come apart and serious injury may result.

• Use tires with an outside circumference of less than

690 mm (for the FS-C810) or 725 mm (for the FS-C812) so that the tire does not touch the bridge of the front suspension fork. If a fender has been fitted, make sure that the tire does not touch the fender when the tire is installed.

• Install the handlebar and the handlebar stem

Bridge

Tire correctly while referring to the Service Instructions for these parts. If they are not installed correctly, you might lose control of your bicycle and have an accident.

• The FS-C810 does not include a hanger on the front suspension fork, and so only cantilever brakes that are designed to be installed to the front suspension fork without a hanger can be used.

• Only disc brakes can be installed to the FS-C812 front suspension.

• Keep used batteries out of the reach of children, and dispose of them in accordance with local waste regulations. If batteries are swallowed by mistake, seek medical advice immediately.

• Use a neutral detergent to clean the chain. Do not use alkaline or acidic detergents that are designed to remove things such as rust, as they can damage the chain and cause the chain to break.

• When removing the rear wheel, disconnect the cable from the rear hub and then place the chain onto the top (smallest sprocket) of the cassette sprocket first.

Make sure the rotor temperature has decreased sufficiently when removing the cord if the disc brake is mounted. Touching the rotor immediately after riding the bicycle may result in burns.

• Obtain and read the service instructions carefully prior to installing the parts. Loose, worn, or damaged parts may cause serious injury to the rider.

We strongly recommend only using genuine Shimano replacement parts.

• 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.

• Read these Technical Service Instructions carefully, and keep them in a safe place for later reference.

Note

• The front derailleur shifts gears by the operation of the manual shift switches, regardless of whether the mode setting is automatic or manual. However, the rear derailleur will not shift gear in automatic mode, even when the manual shift switches are operated.

• When sufficient power is not being generated at times such as immediately after starting to ride, movement of derailleurs and suspension may be limited and the system may not accept operator instructions.

Refer to the explanations of other functions for details.

• Turn the pedals when carrying out both front and rear gear shifting.

• Do not turn the pedals backward.

• Do not clean the bicycle with high-pressure sprays. If moisture gets into the components, it may cause operating problems or rust.

• Do not disassemble any of the units, otherwise they may not operate correctly.

• A beep will sound when gear shifting occurs.

• The various units are designed to be water-resistant so that they can be used for riding in wet weather.

However, they should not be immersed in water.

• Do not leave the FLIGHT DECK exposed to extremely hot weather, and do not subject it to shocks.

• To clean the units, wipe with a dry cloth or a cloth that is lightly moistened with neutral detergent.

Substances such as thinner will damage the unit surfaces.

• Roughly 1 minute after stopping the bicycle, the energy saving function is activated and the liquid crystal display turns off. The backlight turns off about 5 seconds after stopping the bicycle.

• Parts are not guaranteed against natural wear or deterioration resulting from normal use.

• For any questions regarding methods of handling or maintenance, please contact the place of purchase.

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C 810

The rotation of this bicycle’s free hub generates power used to switch gears and control the suspension.

What is automatic shifting mode?

This is a riding mode in which the gears are selected automatically according to the riding speed.

What is manual shifting mode?

This is a riding mode in which the gears are selected according to the preferences of the rider.

Tips on use

In order to get better results in automatic mode

The shifting points can be changed to any one of five different points both before and after the standard shifting points. You can change the settings to find the shifting points that best suit your preferences. (Page 10)

Specifications

Front derailleur (with computer unit)

Rear derailleur

Manual shift switches

FLIGHT DECK (cycle computer)

Electronic wire cable

Front chainwheel

Front suspension fork

Cord cover for front suspension fork

Rear suspension

Chain

Cassette sprocket

Freehub (Hub dynamo)

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FD-C810

RD-C810

SW-C810 / SM-SW10 + SW-C810C

SC-C810

EW-C810

FC-C810

FS-C810 / FS-C812

For FS-C810: SM-FS10

For FS-C812: SM-FS11 / SM-FS12

RS-C810

CN-HG73

CS-LG50 (11-13-15-17-21-25-29-33T)

FH-C810 / C811

Part names and operation

FLIGHT DECK (SC-C810)

Low battery display

Speed display

Battery indicator

Suspension status display

Display mode select switch

Gear shifting mode display

Clock display

Travelling distance display

Cumulative distance display

Gear display

Manual shift switches

(SW-C810 / SM-SW10 + SW-C810C)

Front shifting

< Left-hand >

Rear shifting

< Right-hand >

HIGH

LOW

Shifthing up switch

Shifthing down switch

HIGH

LOW

Suspension mode select switch

Gear shifting mode select switch

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Mode selection operations

< Display select switch >

Speed display

0 - 99 km

0 - 62 mile

Push

Clock

00 : 00 - 23 : 59

Hours : Minutes

Travelling distance

000.0 - 999.9 km

000.0 - 620.0 mile

Gear

Cumulative distance

0 - 9999 km

0 - 6200 mile

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< Suspension mode select switch >

Left-hand

HIGH

LOW

* Make sure the battery indicator shows at least 4 blocks. The mark will flash when switching the suspension. When complete, the mark will light up. When flashing, the next mode cannot be switched even if operating the switch.

Push

Select the desired suspension mode.

If the suspension is set to AUTO, the suspension changes between H (hard) mode and S (soft) mode depending on the speed and the front and rear gear positions.

< Gear shifting mode select switch >

Right-hand

HIGH

LOW

Push

Select the desired riding mode.

When set to L, D or DS, automatic gear shifting is carried out in accordance with the riding speed. When selecting MANU, manual gear shifting is carried out with the front and rear derailleurs shifting when the shift switches are operated.

(Auto)

(Hard)

(Soft)

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Manual shift switches (Manual shifting mode)

Rear gear shifting is basically carried out automatically, but manual shifting is also available for riders who would like to make us of it.

Press the mode select switch to set the mode to manual (MANU).

Front gear shifting operation

When the HIGH switch is pressed, the chain moves from a smaller to a larger chainring. This is for using during normal riding and when riding downhill.

When the LOW switch is pressed, the chain moves from a larger to a smaller chainring. This is for using when riding uphill or riding into headwinds.

* The front derailleur momentarily shifts gears when the switch is pressed even in automatic shifting mode.

However, after that it may return to the original gear depending on the riding speed.

Rear gear shifting operation

When the HIGH switch is pressed, the chain moves from a larger to a smaller sprocket. This makes the pedals a bit harder to turn but allows the feet to turn more slowly.

When the LOW switch is pressed, the chain moves from a smaller to a larger sprocket. This makes pedaling easier.

Tips on use

Selecting automatic shifting mode

Powerful Ds mode

Select Ds mode for more dynamic riding

Basically, choose

D mode

* Adjust the shifting points evenly for a smoother ride.

Relaxed L mode

Select L mode for hilly terrain.

* The shifting points can be adjusted to one of 11 different points.

(Page 10)

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Tips on use

Selecting AUTO mode

Basically, use AUTO mode.

D mode is set for normal riding.

When riding up slopes or into headwinds and pedaling becomes more difficult, press the switch to shift to the L mode.

If pedaling is too fast, press the switch to shift to D or Ds mode.

If changing gears does not improve your ride, use the front shifting switch to shift to the small chainring. The front gears can be shifted manually even in auto mode.

The front derailleur can be set to manual shifting mode even when the rear derailleur is set to automatic shifting mode.

Tips on use

Selecting the suspension

Basically, use AUTO mode.

Hard mode is set when starting to ride and going up hills.

Manual Setting

Set either S (SOFT mode) or H (HARD mode) as desired.

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Changing the entry data

Switch the suspension from AUTO mode to either HARD or SOFT mode when inputting new data. After the bicycle stops, the battery indicator located on the FLIGHT DECK will display no blocks after roughly 5 seconds even if there is power remaining in the battery in order to save energy. The backlight is off when changing data.

Method

(1)

Preparation of Set up

Make sure the battery indicator shows at least 4 blocks and the speedometer reads 0km/h.

• Adjust shifting points

• Selecting Front : Auto/Manual

• ODOmeter clear

• Buzzer On/Off

Rotate the crank if the battery indicator is low. Then, apply the brakes and check the display making sure the speedometer reads 0km/h (mph) with the battery indicator showing sufficient power. Turn the crank again to recharge the battery if power runs out while inputting new data.

(2)

Start of Set up

After having completed preparations, press the shifting mode select switch of the right shifting switch

(Up/Down) for at least 3 seconds. Check that the display only shows the battery indicator, a numerical value, and the “AUTO” mark. Select the items to be changed using the right shifting switch (Up/Down). Press the shifting mode select switch to set when the desired value appears.

<Right-hand>

Shifting Up/Down switch

Shifting mode select switch

Push

Press for at least 3 seconds

Adjust shifting points

After confirming that the number flashes, change to the number you want by operating Shifting Up/Down switch.

Adjustable range : -5 to +5

If you want to make the shifting timing earlier.

\

Change to bigger number.

If you want to make the shifting timing later.

\

Change to smaller number.

When the desired setting appears, press the shifting mode select switch to set.

Default level is "0"

Ex. In case of "3" you want

Seletion of Front : Auto/Manual

You can select whether Front gear is shifted by Automatic or manual operating.

Selection of F : AUTO / MANU mode is like below.

After confirming display shows Battery, "F" and "AUTO" or

"MANU", push Shifting mode select switch.

Ex. In case of F : AUTO Ex. In case of F : MANU

Accept

Accept

If you want to select F : Auto

\

Set that "AUTO" flashes.

If you want to select F : Manual

\

Set that "MANU" flashes.

When the desired setting appears, press the shifting mode select switch to set.

ODOmeter clear

Verify that the display is flashing. Press the right shifting switch (Up/Down) to clear the display (km/mile). The travelling distance is also cleared.

Ex. In case of odometer is 300 km

Accept

Accept

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If you want to clear data

\ Set that "0000 km" flashes.

If you don't want to clear data

\ Set that "0300 km" flashes.

When the desired setting appears, press the shifting mode select switch to set.

Buzzer On/Off

Buzzer On/Off mode is like below.

After confirming display shows Battery and "b on" or

"b off", push Shifting mode select switch.

Confirm the number flashes.

Ex. In case of buzzer on.

Ex. In case of buzzer off.

If you want to buzzer

\

Set that "b on" flashes.

If you don't want to buzzer

\

Set that "b off" flashes.

When the desired setting appears, press the shifting mode select switch to set.

• Clock setting (24hours)

• Travelling distance Clear

Clock setting (24hours)

Condition of setting

(1) Wait 5 seconds after stopping or remove the FLIGHT DECK from the bicycle.

(2) Verify that the low battery display is not flashing.

Display select switch

Press for at least 3 seconds

Method of setting

ex. Adjust to 12:30

• Set the display on the FLIGHT

DECK to clock mode.

• Push the the display switch and hold for 3 seconds or more at clock.

• After confirming left side digit flashes, change to 1 by pushing switch on the FLIGHT DECK.

• And then, push it and hold for 3 seconds or more to shift to next digit.

• Adjust each digit in order from left side to right side.

• After adjusting all digits, the display goes back to normal mode.

• If not inputting setting in the

FLIGHT DECK for more than 2 minutes, the microcomputer stops and all values already inputted are deleted.

Travelling distance Clear

Condition of setting

(1) Wait 5 seconds after stopping or remove the FLIGHT DECK from the bicycle.

(2) Verify that the low battery display is not flashing.

Display select switch

Press for at least 3 seconds

Method of setting

• Set the display on the FLIGHT

DECK to "DST" mode.

• Push the the display switch and hold it for 3 seconds or more.

• After confirming present distance blinks, change to 0 km or 0 mile by pushing switch on the FLIGHT

DECK.

• Every time you push the display switch the present distance and the clearing indication (0 km or 0 mile) are indicated.

• When you want to clear the present distance, push the display switch for more than three seconds.

• If not inputting setting in the

FLIGHT DECK for 2 minutes or more when the display conditions make it possible for the travelling distance to be cleared, the travelling distance will not be cleared.

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Suspension adjustment

Front suspension adjustment

< Pre-load adjuster adjustment >

(1) Press the suspension mode select switch to set the suspension mode to "S".

(2) Apply the front brake or place some weight on the handlebars to move the front suspension up and down in order to check the hardness. Adjust the pre-load adjuster to obtain the desired hardness.

If turned in the reverse direction, the suspension becomes softer, and when turned in the forward direction, the suspension becomes harder. .

Pre-load adjustment:

10 mm (40 clicks)

1.5 mm (67 clicks):1 cycle

Rear suspension adjustment

< Air priming >

(1) Press the suspension mode select switch on the shifting switches to set the suspension mode to "S".

(2) The air pressure varies depending on factors such as the shape and size of the frame, the rider's weight and the riding method.

Adjust the air pressure to the optimum level max.1.5 MPa. {max.15 bar}

The valve is a Schrader valve.

As a guide, in "S" (soft) mode, the bicycle should move down by 5 - 10 mm when the rider sits on it.

• After priming with air, securely tighten the cap, otherwise the air will leak out.

• For optimum functioning of the rear suspension, check the pressure in the rear suspension once a month.

Battery replacement

When the low battery display appears

(battery indicator flashes), replace the battery (CR-2032) with a new one as soon as possible. If the battery is completely spent, the FLIGHT DECK display will appear while riding, however, it will disappear and the clock will return to 00:00 with the travelling distance reading 0 when the bicycle stops.

CR-2032

FLIGHT DECK

Mounting/

Removal

As per the figure, set the FLIGHT DECK securely onto the bracket until you hear a snap.

When removing the FLIGHT DECK, pull it out while pressing firmly on eject lever at the front of the bracket.

FLIGHT DECK Bracket

Eject lever

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Other function

• When the speed has dropped to zero and the backlight and the charging indicator switch off 5 seconds later, the power save function will start operating 1 minute after that. The display turns off at this time.

To return to normal mode, press the display select switch on the FLIGHT DECK, or rotate the rear wheel.

• Buzzer operation

The buzzer operates in the following ways to convey information.

Condition Type of sound Remarks

1

Before gear shifting starts

1 short beep Gear shifting starts immediately after the buzzer sounds.

2

Switch request cancelled

Two short beeps

A gear shifting request or other request was cancelled because the pedals were not rotating. (See *1)

3

When normal operation starts

1 long beep

Sounds when the flight deck changes from parking mode to normal mode.

*1 Gear shifting operations are cancelled under the following conditions:

• When a request is made to shift to a non-existing gear

For example, if an upshift request is made when the chain is on the smallest sprocket

• If the battery charge is low (FD / RD : 0 boxes; Suspension: 3 boxes or less)

• If there is a problem with the rear derailleur

• If the suspension select switch is pressed while suspension mode is in the process of changing

Normally gear shifting and suspension adjustment will be possible if the above limiting conditions are resolved.

Front gear range when in AUTO mode

AUTO mode

Manual front shifting

Shifting mode

L

D

Ds

L

D

Ds

Front chainring

Large, Middle, Small

Large, Middle

Large, Middle

Large, Middle, Small

Large, Middle, Small

Large, Middle, Small

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Problem solver

The following operations are examples of normal operations that the user can sometimes mistake for problems. You should first refer this table to check if the problem is actually normal operation or not.

Condition Description

Speed display is incorrect.

Tire circumference setting is incorrect.

Change the setting to the correct number.

Buzzer does not sound.

The buzzer has been set to off.

Set it to on.

Manual shifting of the rear derailleur is not possible when automatic gear shifting mode is set.

Manual gear shifting is disabled during automatic gear shifting mode.

If you would like to enable manual shifting, change the mode to "MANU".

Gear shifting does not occur when the manual shift switches are pressed in manual gear shifting mode. (Pedals are not turning)

Gear shifting is not carried out when the pedals are not turning.

Press the manual shift switches while turning the pedals.

A component such as the rear derailleur does not operate.

Malfunction of the component or wiring problem i

Check the wiring from the flight deck to the component that does not operate.

If a wire is disconnected, not fully connected or connected to the wrong place, fix the connection.

If the problem is not solved by carrying out the suggestions above, the cause of the problem may be:

• A problem with the FLIGHT DECK

• Broken internal wiring

• Malfunction of component that is not operating

Ask an authorized bicycle dealer for repairs.

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