Shimano ST-RX810-LA Manual

Shimano Ikke kategoriseret ST-RX810-LA

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Side 1/3

Dual Control Lever for

Hydraulic Disc Brake

IMPORTANT NOTICE

•Contact the place of purchase or a distributor for information on

installation, adjustment, and replacement of the products which are not

found in the user's manual. A dealer's manual for professional and

experienced bicycle mechanics is available on our website (https://si.

shimano.com).

For safety, be sure to read this user's manual

thoroughly before use, follow it for correct use, and

store it so that it can be referenced at any time.

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.

Important safety information

WARNING

•Because each bicycle may handle slightly differently depending on the

model, be sure to learn the proper braking technique (including brake

lever pressure and bicycle control characteristics) and operation of your

bicycle. Improper use of your bicycle's brake system may result in a loss

of control, which could lead to serious injury due to a fall or collision.

•Do not disassemble or modify the product. This may cause the product

to not operate correctly, and you may suddenly fall and be seriously

injured.

•This hydraulic brake system has different braking characteristics from

those of the rim brake type, demonstrating relatively high braking force

at the beginning of braking (higher than the rim brake type);

familiarize yourself sufficiently with the braking characteristics before

using it. If you ride the bicycle without becoming sufficiently familiar

with the braking characteristics, braking may cause you to fall off the

bicycle, potentially causing serious injury or a fatal accident.

•The braking force for a hydraulic brake system will increase along with

the size of the disc brake rotor (140 mm, 160 mm, 180 mm, 203 mm).

–Do not use a 203 mm disc brake rotor. This will excessively increase

the braking force, which could cause you to lose control of the

bicycle, fall, and be seriously injured.

–Only use a 180 mm disc brake rotor if you are unable to obtain

sufficient braking force with a 160 mm disc brake rotor upon a trial

ride, such as when riding an electronic assist road bicycle or if the

rider is heavy. Otherwise, you may lose control of the bicycle, fall,

and be seriously injured.

–If you feel that the braking force is too high or too low, stop use and

consult a place of purchase or a distributor. Accidents or falls may

occur due to losing control of the bicycle, possibly resulting in serious

injury.

•Please use extra caution to keep your fingers away

from the rotating disc brake rotor. The disc brake

rotor is sharp enough to inflict severe injury to your

fingers if caught within the openings of moving

rotor.

•Do not touch the calipers or disc brake rotor while riding or

immediately after dismounting from the bicycle. The calipers and disc

brake rotor will become hot when the brakes are operated, so you may

get burned if you touch them.

•Do not allow any oil or grease to get onto the disc brake rotor and

brake pads. Riding the bicycle with oil or grease on the disc brake rotor

and brake pads may prevent the brakes from operating and result in

serious injury due to a fall or collision.

•Check the thickness of the brake pads and do not use them if they have

a thickness of 0.5 mm or less. Doing so may prevent the brakes from

operating and result in serious injury due to a fall or collision.

2 m m 0 . 5 m m

•Do not use the disc brake rotor if it is cracked or deformed. The disc

brake rotor may break, and result in serious injury due to a fall.

•Do not use the disc brake rotor if its thickness is 1.5 mm or less. Also do

not use it if the aluminum surface becomes visible. The disc brake rotor

may break, and result in serious injury due to a fall.

•Do not continuously apply the brakes. Doing so may cause a sudden

increase in the brake lever stroke, preventing the brakes from operating

and resulting in serious injury due to a fall or collision.

•Do not use the brakes with oil leaking. Doing so may prevent the brakes

from operating and result in serious injury due to a fall or collision.

•Do not apply the front brake too strongly. If you do so, the front wheel

may lock and the bicycle may fall forward, and serious injury may result.

•Because the required braking distance will be longer during wet

weather, reduce your speed and apply the brakes early and gently. You

may fall or collide and be seriously injured.

•A wet road surface may cause tires to lose traction; therefore, to avoid

this, reduce your speed and apply the brakes early and gently. If the

tires lose traction, you may fall and be seriously injured.

CAUTION

Cautions on SHIMANO genuine mineral oil

•In the event of eye contact, flush with fresh water and seek medical

assistance immediately. Contact with skin may cause a rash and

discomfort.

•In the event of skin contact, wash well with soapy water. Contact with

skin may cause a rash and discomfort.

•Cover nose and mouth with a respirator type mask and use in a well

ventilated area. Inhalation of mineral oil mist or vapors may cause

nausea.

•If mineral oil mist or vapor is inhaled, go immediately to an area with

fresh air. Cover up with a blanket. Stay warm and stable and seek

professional medical advice.

Bed-in period

•Disc brakes have a bed-in period, and the braking force will gradually

increase as the bed-in period progresses. Accidents or falls may occur

due to losing control of the bicycle, possibly resulting in serious injury.

The same thing will happen when the brake pads or disc brake rotor

are replaced.

Notice

•To prevent noise and ensure the best performance, perform the bed-in

procedure after replacing the brake pads or disc brake rotor.

•In the case of carbon levers, wash them with a soft cloth using a neutral

detergent. Otherwise, the material may be damaged and lose strength.

•Avoid leaving the carbon levers in places where high temperatures are

present. Also keep them well away from fire.

•Be sure to keep turning the crank during the lever operation.

•When the bicycle wheel has been removed, it is recommended that pad

spacers are installed. Do not depress the brake lever while the wheel is

removed. If the brake lever is depressed without the pad spacers

installed, the pistons will protrude further than normal. If that happens,

consult a place of purchase.

•Use soapy water and a dry cloth when cleaning and carrying out

maintenance of the brake system. Do not use commercially available

brake cleaners or silencing agents. Such substances can cause damage

to parts such as seals.

•Also read the user's manuals for the front derailleur, rear derailleur,

and brake.

•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.

•When using ST-RX810-LA, before riding the bicycle, confirm that the

seat height will not impair the operation of the bicycle (even if the seat

height has been adjusted within the adjustment range).

Regular inspections before riding the bicycle

Before riding the bicycle, check the following items. If any problems are

found, consult your place of purchase or a distributor.

•Are there any signs of brake oil leakage?

•Do the front and rear brakes work correctly?

•Is gear shifting carried out smoothly?

•Do the pads have a thickness of 0.5 mm or more?

•Is the disc brake rotor cracked or deformed?

•Are the levers securely installed to the handlebar?

•Are there signs of cracks or peeling on the levers?

•Do any abnormal noises occur during operation?

•Can the seat post height be adjusted smoothly? (When using ST-RX810-

LA)

Names of parts

Lever

Disc brake rotor

Caliper Disc brake rotor

Brake hose

Caliper

(Brake lever/seat

post lever)

Lever

(Brake lever/seat

post lever)

Front Rear

Brake pad

Brake hose

Lever A

Lever B

Lever A

Lever B

Lever C

How to operate

Operating the brakes

Gear shifting operation

Be sure to keep turning the crank during the lever operation.

Caution on operation

After gear shifting is completed, both levers A and B return to their initial

position.

Do not push levers A and B at the same time. Gear shifting is not

performed if the levers are pushed at the same time.

* Some models have two-step gear shifting.

UM-07X0A-006 User's Manual

Left-hand lever operation

Lever A initial

position

Lever B initial

position

Right-hand lever operation

Lever A initial

position

(1) Click

543

(1)

(2)

(2) Click

Lever B initial

position

4 3

ST-RX810-LA operation

Lever C initial

position

1. Operate lever C in the direction indicated with the arrow

2. Adjust the height of the seat

3. Release the lever once the seat is at the appropriate height

Trimming operation (noise prevention mechanism)

When noise occurs due to the front derailleur contacting the chain,

perform the following operation.

Chain

position

Trimming

operation Chain

position

Trimming

operation

Lever

operation

Lever

operation

Largest chainring

High limit sprocket

Lever A

Click

(Make contact)

Largest chainring

Low limit sprocket

Lever B

Click

(Make contact)

High limit sprocket

Smallest chainring

Low limit sprocket

How to perform bed-in

To optimize the performance of the brake pads and disc brake rotor,

perform the bed-in procedure as explained in the steps below:

1. Ride your bicycle in a flat and safe area without obstacles and

accelerate to a moderate speed.

2. Operate the brake lever until you slow down to walking speed.

Do this only with one brake lever at a time. Be careful when performing

this procedure. Always operate your brake lever with moderation,

especially when you bed in the front brake.

3. Repeat steps 1 and 2 for at least 20 times for both the front and rear

brakes.

While repeating the process, the brake force will increase. Please note: specifications are subject to change for improvement without notice. (English)