Honda CRF450R 2009 Service Manual page 495

Perform the bleeding pmcedure until the system is
completely flushed/bled.
• If air enters the bleeder from around the bleed valve
threads , seal the threads with teflon tape.
Close the bleed valve and operate the brake lever or
pedal.
If it still feels spongy, bleed the system again.
Operate the brake lever or pedal. If it still feels spongy,
bleed the system again .
HYDRAULIC BRAKE
FRONT MASTER CYLINDER
REAR MASTER CYLINDER
If a brake bleeder is not available, perform the following
~============::::;=~=::~~
procedures:
Fill the reservoir with DOT 4 brake fluid from a sealed
container.
Wrap
a
c/8an shop
Connect a bleed hose to the bleed valve.
towel
around the
Pressurize the system with the brake lever or pedal until
reservoir
/0
pteV9n1
there are no air bubbles in the brake fluid flowing out of
brake nuld spilling
the small hole in the reservoir and lever or pedal
resistance is felt.
1. Squeeze the brake tever or push the brake pedal,
open the bleed valve 112 tum and then close the
bleed valve.
NOTE:
Do not release the brake lever or pedal until the bleed
valve has been closed.
2. Release the brake lever or pedal slowly, and wait
several seconds after it reaches the end of its travel.
3. Repeal steps 1 to 2 until there are no air bubbles in
the bleed hose.
After bleeding air completely, tighten the bleed valves
to the specified torque.
TORQUE: 5.4 N'm (0.6 kgf'm , 4.0 IbHtj
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