Bleeding The Hydraulic Brake System (Abs) (For Yp250Ra) - Yamaha MBK XMAX 2014 Service Manual

TIP
Loosening the bleed screw will release the pres-
sure and cause the brake lever to contact the
throttle grip.
h. Tighten the bleed screw, and then release
the brake lever.
i. Repeat steps (e) to (h) until all of the air bub-
bles have disappeared from the brake fluid in
the plastic hose.
j. Tighten the bleed screw to specification.
Front brake caliper bleed screw
6 Nm (0.6 m·kgf, 4.3 ft·lbf)
k. Fill the brake master cylinder reservoir to the
proper level with the specified brake fluid.
Refer to "CHECKING THE BRAKE FLUID
LEVEL" on page 3-9.
EWA13110
WARNING
After bleeding the hydraulic brake system,
check the brake operation.
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EAS2DM1025
BLEEDING THE HYDRAULIC BRAKE
SYSTEM (ABS) (for YP250RA)
EWA14000
WARNING
Always bleed the brake system when the
brake related parts are removed.
ECA2DM1026
NOTICE
• Bleed the brake system in the following or-
der.
• 1st step: Front brake caliper
• 2nd step: Rear brake caliper
EWA2DM1005
WARNING
Bleed the ABS whenever:
• the system is disassembled.
• a brake hose is loosened, disconnected or
replaced.
• the brake fluid level is very low.
• brake operation is faulty.
TIP
• Be careful not to spill any brake fluid or allow
the brake master cylinder reservoir to overflow.
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PERIODIC MAINTENANCE
• When bleeding the ABS, make sure there is al-
ways enough brake fluid before applying the
brake. Ignoring this precaution could allow air
to enter the ABS, considerably lengthening 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:
• ABS
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a. Fill the brake master cylinder reservoir to the
proper level with the specified brake fluid.
b. Install the brake master cylinder reservoir di-
aphragm.
c. Connect a clear plastic hose "1" tightly to the
bleed screw "2".
A
▲▲▲
B
A. Front brake caliper
B. Rear brake caliper
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 and hold it in posi-
tion.
g. Loosen the bleed screw.
TIP
Loosening the bleed screw will release the pres-
sure and cause the brake lever to contact the
throttle grip or handlebar grip.
3-11
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1
2
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1
2