Yamaha T135SE Service Manual page 259

FRONT BRAKE
4. Bleed:
9 brake system
Refer to "BLEEDING THE HYDRAULIC
BRAKE SYSTEM" in chapter 3.
a
5. Check:
9 brake fluid level
Below the minimum level mark
the recommended brake fluid to the proper
level.
Refer to "CHECKING THE BRAKE FLUID
LEVEL" in chapter 3.
6. Check:
9 brake lever operation
Soft or spongy feeling
system.
Refer to "BLEEDING THE HYDRAULIC
BRAKE SYSTEM" in chapter 3.
7-29
http://www.motorcycle.in.th
CHAS
a → Add
→ Bleed the brake