Yamaha YZ450FF 1SL-28199-11, Owner'S Service Manual

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CHASSIS
3-25
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3. Check:
• Brake fluid level
Refer to “CHECKING THE BRAKE FLUID
LEVEL” on page 3-26.
4. Check:
• Brake lever operation
A softy or spongy feeling

Bleed the brake
system.
Refer to “BLEEDING THE BRAKE SYS-
TEM” on page 3-21.
EAS1SL5097 CHECKING THE REAR BRAKE PADS
1. Measure:
• Brake pad thickness “a”
Out of specification

Replace as a set.
TIP
The pads worn up to the indicator “b” grooves
mean that the brake pad thickness limit is
reached.
2. Replace:
• Brake pads
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a. Remove the protector “1” and the pad pin
plug “2”.
b. Loosen the pad pin “3”.
c. Remove the rear wheel “4” and the brake
caliper “5”.
Refer to “REAR WHEEL” on page 4-7.
d. Remove the pad pin “6” and the brake pads
“7”.
e. Connect the plastic hose “8” to the bleed
screw “9” and place a container under the
end of the plastic hose.
Brake pad lining thickness (inner)
6.4 mm (0.25 in)
Limit
1.0 mm (0.04 in)
Brake pad lining thickness (outer)
6.4 mm (0.25 in)
Limit
1.0 mm (0.04 in)
10
b
a
a
1
2
3
4
5
7
6
9
8