Yamaha WR450FN 2022 Owner's Service Manual page 149

d. Remove the pad pin and brake pads "4".
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 pad
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.
a
2
1
4-21
Bleed screw
5 N·m (0.5 kgf·m, 3.7 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.
b a
e. Install the brake caliper "4" and tighten the
pad pin "5".
Bolt (brake caliper)
28 N·m (2.8 kgf·m, 21 lb·ft)
Pad pin
17 N·m (1.7 kgf·m, 13 lb·ft)
f. Install the pad pin plug "6".
Pad pin plug
2.5 N·m (0.25 kgf·m, 1.8 lb·ft)
FRONT BRAKE
3
4
5
6