Chassis; Adjusting The Front Disc Brake; Adjusting The Rear Disc Brake; Checking The Brake Fluid Level - Yamaha YZ450FX 2022 Owner's Service Manual

EAM20136

CHASSIS

EAM30479

ADJUSTING THE FRONT DISC BRAKE

TIP
There should be no free play at the brake lever
end.
1. Check:
• Brake lever position "a"
Brake lever position
100 mm (3.94 in)
Extent of adjustment
86–105 mm (3.39–4.13 in)
2. Remove:
• Brake lever cover
3. Adjust:
• Brake lever position
a. Loosen the locknut "1".
b. Turn the adjusting bolt "2" until the speci-
fied brake lever position is obtained.
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.
4. Install:
• Brake lever cover
EAM30480

ADJUSTING THE REAR DISC BRAKE

1. Adjust:
• Brake pedal position
a. Loosen the locknut "1".
b. Turn the adjusting bolt "2" until the brake
c. Tighten the locknut.
EWA19150
A soft or spongy feeling in the brake pedal
can indicate the presence of air in the brake
2
system. Before running, bleed the brake sys-
tem. Air in the brake system will cause brak-
ing performance to be reduced.
1
ECA13510
NOTICE
After adjusting the brake pedal position,
make sure there is no brake drag.
EAM30234

CHECKING THE BRAKE FLUID LEVEL

1. Stand the vehicle upright on a level surface.
TIP
In order to ensure a correct reading of the brake
fluid level, make sure that the top of the brake
fluid reservoir is horizontal.
2. Check:
• Brake fluid level
The minimum level mark "a" or below  Add.
3-23
pedal is in the correct position.
2 2
1 1
Locknut
6 N·m (0.6 kgf·m, 4.4 lb·ft)
WARNING

CHASSIS