Yamaha YZ 2019 Series Owner's Service Manual page 148

3. Pour brake fluid to the brake master cylinder
reservoir up to the specified level.
Specified brake fluid
DOT 4
EWA20340
WARNING
• 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 master cylinder reser-
voir. Water will significantly lower the boil-
ing point of the brake fluid and could cause
vapor lock.
ECA13540
NOTICE
Brake fluid may damage painted surfaces
and plastic parts. Therefore, always clean up
any spilt brake fluid immediately.
4. Bleed:
• Brake system
Refer to "BLEEDING THE BRAKE SYSTEM"
on page 3-21.
5. Check:
• Brake fluid level
The minimum level mark "a" or below  Add.
Refer to "CHECKING THE BRAKE FLUID
LEVEL" on page 3-26.
a
6. Check:
• Brake lever free play
Refer to "ADJUSTING THE FRONT BRAKE"
on page 3-22.
• Brake lever operation
A softy or spongy feeling  Bleed the brake
system.
Refer to "BLEEDING THE BRAKE SYSTEM"
on page 3-21.
4-20
FRONT BRAKE