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

Page: 106 / 358

CHASSIS
3-22
EAS1SL5093
CHECKING THE BRAKE HOSE
1. Check:
• Brake hose “1”
Cracks/damage/wear

Replace.
2. Check:
• Brake hose clamp
Loose Connection

Tighten the clamp bolt.
3. Stand the vehicle upright and apply the front
brake and the rear brake several times.
4. Check:
• Brake hoses
Brake fluid leaks

Replace the damaged
brake hose.
Refer to “FRONT BRAKE” on page 4-12.
Refer to “REAR BRAKE” on page 4-22.
EAS1SL5094
ADJUSTING THE FRONT BRAKE
1. Check:
• Brake lever position “a”
2. Remove:
• Brake lever cover
3. Adjust:
• Brake lever position
▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼
a. Loosen the locknut “1”.
b. Turn the adjusting bolt “2” in direction “a” or
“b” until the specified brake lever position is
obtained.
c. Tighten the locknut.
EWA13050
WARNING
A soft or spongy feeling in the brake lever
can indicate the presence of air in the brake
system. Before the vehicle is operated, the
air must be removed by bleeding the brake
system. Air in the brake system will consid-
erably reduce braking performance.
ECA13490
NOTICE
After adjusting the brake lever position,
make sure there is no brake drag.
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A. Front
B. Rear
Brake lever position
95 mm (3.74 in)
Extent of adjustment
86–105 mm (3.39–4.13 in)
1
1
Direction “a”
Brake lever position is increased.
Direction “b”
Brake lever position is decreased.
Locknut
5 Nm (0.5 m·kgf, 3.6 ft·lbf)
a
b
T
R
.
.