Adjusting The Rear Brake; Checking The Front Brake Pads - Yamaha YZ450F Owner's Service Manual

4. Install:
• Brake lever cover

ADJUSTING THE REAR BRAKE

EASB111092
1. Check:
• Brake pedal position "a"
(distance from the top of the rider footrest to
the top of the brake pedal)
Out of specification  Regulate.
Brake pedal position
0.0 mm (0.00 in)
2. Adjust:
• Brake pedal position
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a. Loosen the locknut "1".
b. Turn the adjusting bolt "2" in direction "a" or
"b" until the specified brake pedal position is
obtained.
Direction "a"
Brake pedal is raised.
Direction "b"
Brake pedal is lowered.
a
b
2
1
c. Tighten the locknut.
Locknut
6 Nm (0.6 m·kgf, 4.3 ft·lbf)
EWA
WARNING
A soft or spongy feeling in the brake pedal
can indicate the presence of air in the brake
system. Before running, bleed the brake
system. Air in the brake system will cause
braking performance to be reduced.
ECA
NOTICE
After adjusting the brake pedal position,
make sure that there is no brake drag.
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CHECKING THE FRONT BRAKE PADS

EASB111093
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.
Brake pad lining thickness (inner)
4.4 mm (0.17 in)
Limit
1.0 mm (0.04 in)
Brake pad lining thickness (outer)
4.4 mm (0.17 in)
Limit
1.0 mm (0.04 in)
b
3-24
CHASSIS
a
a