Yamaha YZ 2018 Series, Owner'S Service Manual

Page: 109 / 402

CHASSIS
3-23
EASB29B091
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 4-11.
Refer to “REAR BRAKE” on page 4-21.
EASB29B092
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.
EWA
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.
ECA
NOTICE
After adjusting the brake lever position,
make sure there is no brake drag.
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4. Install:
• Brake lever cover
A. Front
B. Rear
Brake lever position
95 mm (3.74 in)
Extent of adjustment
76–97 mm (2.99–3.82 in)
1
1
Direction “a”
Brake lever position is increased.
Direction “b”
Brake lever position is decreased.
Locknut
5 N·m (0.5 kgf·m, 3.7 lb·ft)
a
b
T
R
.
.