Checking The Brake Hoses; Adjusting The Front Brake - Yamaha YZ450FX 2019 Owner's Service Manual

EAM30228

CHECKING THE BRAKE HOSES

1. Check:
• Brake hose "1"
Cracks/damage/wear  Replace.
1
A. Front
B. Rear
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 hose
Brake fluid leaks  Replace the damaged
brake hose.
Refer to "FRONT BRAKE" on page 4-13.
Refer to "REAR BRAKE" on page 4-23.
EAM30229

ADJUSTING THE FRONT BRAKE

1. Check:
• Brake lever position "a"
Brake lever position
95 mm (3.74 in)
Extent of adjustment
86–105 mm (3.39–4.13 in)
2. Remove:
• Brake lever cover
3. Adjust:
• Brake lever 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 lever position is
obtained.
Direction "a"
1
Brake lever position is increased.
Direction "b"
Brake lever position is decreased.
c. Tighten the locknut.
Locknut
5 N·m (0.5 kgf·m, 3.7 lb·ft)
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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3-22
CHASSIS
a
b