Yamaha FZ09E Service Manual page 120

before applying the brake. Ignoring this pre-
caution could allow air to enter the hydraulic
brake system, 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 w hen the tiny bubbles
in the hose have disappeared.
1. Bleed:
• Hydraulic brake system
••••••••••••••••••••••••••••••••
a. Fill the brake master cylinder reservoir or
brake fluid reservoir to the proper level with
the specified 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".
1
2
A. Front
B. Rear
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.
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 the brake pedal to fully extend.
h. Tighten the bleed screw and then release the
brake lever or brake pedal.
PERIODIC MAINTENANCE
1.
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.
Brake caliper bleed screw
5 Nm (0.5 m·kgf, 3.6 ft·lbf)
k. Fill the brake master cylinder reservoir or
brake fluid reservoir to the proper level with
the specified brake fluid.
Refer to "CHECKING THE BRAKE FLUID
LEVEL" on page
3-1 1.
EWA13110
,A
WARNING
After bleeding the hydraulic brake system,
check the brake operation.
CHECKING THE FRONT BRAKE HOSES
The following procedure applies to all of the
brake hoses and brake hose holders.
1.
Check:
• Brake hose
Cracks/damage/wear -> Replace.
2.
Check:
• Brake hose holder
Loose
->
Tighten the holder bolt.
3.
Hold the vehicle upright and apply the brake
several times.
4 . Check:
• Brake hose
Brake fluid leakage -> Replace the damaged
hose.
Refer to "FRONT BRAKE" on page 4-20.
EA$21290
CHECKING THE REAR BRAKE HOSE
1. Check:
• Brake hose
Cracks/damage/wear -> Replace.
2.
Check:
• Brake hose holder
Loose Connection -> Tighten the holder bolt.
3.
Hold the vehicle upright and apply the rear
brake several times.
4. Check:
• Brake hose
3-14
Brake fluid leakage
->
Replace the damaged
hose.
Refer to "REAR BRAKE" on page 4-32.