Replacing The Front Brake Pads - Yamaha YZ450F 2020 Owner's Service Manual

ment steps until the brake disc runout is
within specification.
g. If the brake disc runout cannot be brought
within specification, replace the brake
disc.
h. Install the front wheel.
Refer to "FRONT WHEEL" on page 4-5.
EAM30519

REPLACING THE FRONT BRAKE PADS

TIP
When replacing the brake pads, it is not neces-
sary to disconnect the brake hose or disassem-
ble the brake caliper.
1. Remove:
• Brake pad
a. Remove the pad pin plug "1".
b. Loosen the pad pin "2".
c. Remove the brake caliper "3" from the
front fork.
d. Remove the pad pin and brake pads "4".
1
3
2
4
2. Measure:
• Brake pad wear limit "a"
Out of specification  Replace the brake
pads as a set.
Brake pad lining thickness limit
1.0 mm (0.04 in)
3. Install:
• Brake pads
a. Connect the plastic hose "1" to the bleed
screw "2" and place a container under the
end of the plastic hose.
b. Loosen the bleed screw and push the
brake caliper piston in.
EWA19160
WARNING
Do not reuse the drained brake fluid.
c. Tighten the bleed screw.
Bleed screw
6 N·m (0.6 kgf·m, 4.4 lb·ft)
d. Install the brake pads "3" and the pad pin.
TIP
• Install the brake pads with their projections "a"
into the brake caliper recesses "b".
• Temporarily tighten the pad pin at this point.
4-18
FRONT BRAKE
a
2
1