Removing The Front Brake Master Cylinder; Checking The Front Brake Master Cylinder; Assembling The Front Brake Master Cylinder - Yamaha MBK XMAX 2014 Service Manual

• 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.
5. Bleed:
• Brake system
Refer to "BLEEDING THE HYDRAULIC
BRAKE SYSTEM (for YP250R)" on page
3-10 and "BLEEDING THE HYDRAULIC
BRAKE SYSTEM (ABS) (for YP250RA)" on
page 3-11.
6. Check:
• Brake fluid level
Below the minimum level mark "a" → Add the
specified brake fluid to the proper level.
Refer to "CHECKING THE BRAKE FLUID
LEVEL" on page 3-9.
7. Check:
• Brake lever operation
Soft or spongy feeling → Bleed the brake sys-
tem.
Refer to "BLEEDING THE HYDRAULIC
BRAKE SYSTEM (for YP250R)" on page
3-10 and "BLEEDING THE HYDRAULIC
BRAKE SYSTEM (ABS) (for YP250RA)" on
page 3-11.
EAS22490
REMOVING THE FRONT BRAKE MASTER
CYLINDER
TIP
Before removing the front brake master cylinder,
drain the brake fluid from the entire brake sys-
tem.
1. Remove:
• Brake hose union bolt "1"
• Copper washers "2"
• Front brake hose "3"
TIP
To collect any remaining brake fluid, place a
container under the master cylinder and the end
of the brake hose.
EAS22500
CHECKING THE FRONT BRAKE MASTER
CYLINDER
1. Check:
• Brake master cylinder
• Brake fluid delivery passages
a
2. Check:
• Brake master cylinder kit
3. Check:
• Brake master cylinder reservoir cap
• Brake master cylinder reservoir diaphragm
• Brake master cylinder reservoir diaphragm
4. Check:
• Front brake hose
EAS22520
ASSEMBLING THE FRONT BRAKE MASTER
CYLINDER
EWA13520
• Before installation, all internal brake com-
ponents should be cleaned and lubricated
with clean or new brake fluid.
• Never use solvents on internal brake com-
ponents.
4-41
FRONT BRAKE
2
1
Damage/scratches/wear → Replace.
(brake master cylinder body)
Obstruction → Blow out with compressed air.
Damage/scratches/wear → Replace.
holder
Damage/wear → Replace.
Cracks/damage/wear → Replace.
WARNING
Specified brake fluid
DOT 4
3