Yamaha WR450F 2022, Owner'S Manual

Page: 78 / 176

CHASSIS
3-20
WARNING
EWA13090
• Use only the designated brake fluid. Other
brake fluids may cause the rubber seals to
deteriorate, causing leakage and poor
brake performance.
• Refill with the same type of brake fluid that
is already in the system. Mixing brake fluids
may result in a harmful chemical reaction,
leading to poor brake performance.
• When refilling, be careful that water does
not enter the brake fluid reservoir. Water
will significantly lower the boiling point of
the brake fluid and could cause vapor lock.
NOTICE
ECA13540
Brake fluid may damage painted surfaces
and plastic parts. Therefore, always clean up
any spilt brake fluid immediately.
EAM30231
CHECKING THE FRONT BRAKE PADS
The following procedure applies to all of the
brake pads.
1. Operate the brake.
2. Check:
• Front brake pad
Wear indicator grooves “1” almost touch the
brake disc

Replace the brake pads as a
set.
Refer to “FRONT BRAKE” on page 4-7.
EAM30232
CHECKING THE REAR BRAKE PADS
The following procedure applies to all of the
brake pads.
1. Operate the brake.
2. Check:
•
Rear brake pad
Wear indicator grooves “1” almost disap-
peared

Replace the brake pads as a set.
Refer to “REAR BRAKE” on page 4-9.
EAM30478
CHECKING THE FRONT BRAKE HOSE
1. Check:
•
Brake hose
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 several times.
4. Check:
•
Brake hose
Brake fluid leaks

Replace the damaged
brake hose.
EAM30498
CHECKING THE REAR BRAKE HOSE
1. Check:
•
Brake hose
Cracks/damage/wear

Replace.
2. Check:
• Brake hose holder
Loose connection

Tighten the holder bolt.
Specified brake fluid
DOT 4
A. Front brake
B. Rear brake
a
a a
1
1