Draining The Brake Fluid; Removing The Brake Caliper Piston - Yamaha YZ125 2009 Owner's Service Manual

HANDLING NOTE
Support the machine securely so there is no
danger of it falling over.

DRAINING THE BRAKE FLUID

1. Remove:
• Brake master cylinder cap "1"
• Protector (rear brake)
Do not remove the diaphragm.
A. Front
B. Rear
2. Connect the transparent hose "2" to the
bleed screw "1" and place a suitable con-
tainer under its end.
A. Front
B. Rear
FRONT BRAKE AND REAR BRAKE
3. Loosen the bleed screw and drain the brake
fluid while pulling the lever in or pushing
down on the pedal.
• Do not reuse the drained brake fluid.
• Brake fluid may erode painted surfaces or
plastic parts. Always clean up spilled fluid
immediately.

REMOVING THE BRAKE CALIPER PISTON

1. Remove:
• Brake caliper piston
Use compressed air and proceed carefully.
• Cover piston with rag and use extreme
caution when expelling piston from cylin-
der.
• Never attempt to pry out piston.
Caliper piston removal steps:
a. Insert a piece of rag into the brake caliper to
lock one brake caliper.
b. Carefully force the piston out of the brake
caliper cylinder with compressed air.
A. Front
B. Rear
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