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Yamaha XT660R Service Manual

Yamaha XT660R
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3 - 40
CHK
ADJ
BLEEDING THE HYDRAULIC BRAKE SYSTEM
EAS00134
BLEEDING THE HYDRAULIC BRAKE
SYSTEM
WARNING
_
Bleed the hydraulic brake system when-
ever:
• the system is disassembled.
• a brake hose is loosened, disconnected
or replaced.
• the brake fluid level is very low.
• brake operation is faulty.
NOTE:
_
• Be careful not to spill any brake fluid or allow
the brake master cylinder reservoir or brake
fluid reservoir to overflow.
• When bleeding the hydraulic brake system,
make sure there is always enough brake
fluid before applying the brake. Ignoring this
precaution could allow air to enter the
hydraulic brake system, considerably length-
ening the bleeding procedure.
• If bleeding is difficult, it may be necessary to
let the brake fluid settle for a few hours.
Repeat the bleeding procedure when the tiny
bubbles in the hose have disappeared.
1. Bleed:
• hydraulic brake system
▼▼▼▼ ▼ ▼▼▼▼ ▼ ▼▼▼▼ ▼ ▼▼▼▼ ▼ ▼▼▼▼ ▼ ▼▼▼▼ ▼▼▼
a. Fill the brake fluid reservoir to the proper
level with the recommended brake fluid.
b. Install the diaphragm (brake master cylinder
reservoir or brake fluid reservoir).
c. Connect a clear plastic hose
1
tightly to the
bleed screw
2
.
È
Front (XT660R)
É
Front (XT660X)
Ê
Rear (XT660R/XT660X)
d. Place the other end of the hose into a con-
tainer.
e. Slowly apply the brake several times.
f. Fully pull the brake lever or fully press down
the brake pedal and hold it in position.
2
1
È
É
1
2
Ê

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Yamaha XT660R Specifications

General IconGeneral
Displacement660cc
Bore x Stroke100.0 mm x 84.0 mm
Compression Ratio10.0:1
Fuel SystemElectronic Fuel Injection
Ignition SystemTCI
Starter SystemElectric
Transmission5-speed
Final DriveChain
Rear SuspensionSwingarm
Front Tire90/90-21
Rear Tire130/80-17
Length2, 240 mm
Width865 mm
Height1, 230 mm
Seat Height865 mm
Wet Weight181 kg
Fuel Capacity15 liters
Lubrication SystemDry sump
Engine TypeLiquid-cooled, 4-stroke, SOHC, 4-valve
Front SuspensionTelescopic fork
Front BrakeSingle disc, 298 mm
Rear BrakeSingle disc, 245 mm
Maximum Power35 kW (48 PS) @ 6, 000 rpm
Maximum Torque58 Nm @ 5, 250 rpm

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