Yamaha FJR 1300 AE 2014 Service Manual page 23

Brake pedal input force and braking force at each wheel
a. Brake force
b. Brake pedal force
c. Rear brake force
d. Front brake force (unified brake system)
Metering valve
This valve prevents the brake fluid pressure that is transmitted to the right front brake caliper from in-
creasing until the pressure exceeds a set level. Only the rear brake caliper is operated when there is
an extremely low amount of brake pedal input.
Proportioning valve
This valve reduces the increase in brake fluid pressure that is transmitted to the rear brake caliper when
the pressure exceeds a set level. The increase in brake fluid pressure to the rear brake caliper is con-
trolled when there is a high amount of brake pedal input.
EC3P61017
NOTICE
• The unified brake system is a system to assist the brake operation. However, both the brake
lever and the brake pedal must be operated for maximum braking effect.
• Because the balance between the right front brake caliper and the rear brake caliper in the uni-
fied brake system is determined mechanically, be sure to use the specified brake pads.
• Each set of brake pads should be checked individually and replaced if necessary.
c
d
e e
a
f f
b
e. Proportioning valve operation
f. Metering valve operation
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FEATURES