Checking The Front Brake Hoses; Checking The Rear Brake Hose - Yamaha FZ8NA Service Manual

f. Fully pull the brake lever or fully press
down the brake pedal and hold it in posi-
tion.
g. Loosen the bleed screw.
TIP
Loosening the bleed screw will release the
pressure 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.
i. Repeat steps (e) to (h) until all of the air
bubbles have disappeared from the brake
fluid in the plastic hose.
j. Check the operation of the hydraulic unit.
Refer to "HYDRAULIC UNIT OPERATION
TESTS" on page 4-60.
ECA14780
Make sure that the main switch is set to
"OFF" before checking the operation of the
hydraulic unit.
k. After operating the ABS, repeat steps (e) to
(i), and then fill the primary circuit with the
recommended brake fluid.
l. Tighten the bleed screw to specification.
Bleed screw
5 Nm (0.5 m·kgf, 3.6 ft·lbf)
m. Fill the brake fluid reservoir to the proper
level with the recommended brake fluid.
Refer to "CHECKING THE BRAKE FLUID
LEVEL" on page 3-14.
EWA13110
WARNING
After bleeding the hydraulic brake system,
check the brake operation.
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EAS21280

CHECKING THE FRONT BRAKE HOSES

The following procedure applies to all of the
brake hoses and brake hose holders.
1. Check:
• Brake hose "1"
Cracks/damage/wear → Replace.
PERIODIC MAINTENANCE
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 dam-
aged hose.
Refer to "FRONT BRAKE" on page 4-30.
EAS21290

CHECKING THE REAR BRAKE HOSE

1. Check:
• Brake hose "1"
Cracks/damage/wear → Replace.
2. Check:
• Brake hose holder "2"
Loose Connection → Tighten the holder
bolt.
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