Yamaha 2007 FZ6-NA Service Manual page 29

Therefore, when the brake lever is squeezed, the hydraulic pressure in the brake master cylinder
increases and the brake fluid is sent to the brake caliper via port A "7" and port B "9".
At this time, the inlet and outlet check valves of the pump close the lines and brake fluid is not sent.
As a result, the brake master cylinder directly pressurizes the brake caliper during normal braking.
When the brake lever is released, the brake fluid in the brake caliper returns to the brake master cyl-
inder via port A "7" and port B "9".
1. Brake master cylinder
2. Brake light switch
3. ABS motor
4. Hydraulic pump
5. Buffer chamber
6. Flow control valve
7. Port A
8. Spool
9. Port B
10.Orifice
11.Port D
12.Solenoid valve
13.Port C
14.Brake caliper
15.ABS ECU
16.ABS warning light
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FEATURES