Checking The Wheels - Yamaha MBK X-MAX 300 2017 Service Manual

• the system is disassembled.
• a brake hose is loosened, disconnected or
replaced.
• the brake fluid level is very low.
• brake operation is faulty.
TIP
• Be careful not to spill any brake fluid or allow
the brake master cylinder reservoir to overflow.
• When bleeding the ABS, make sure that there
is always enough brake fluid before applying
the brake. Ignoring this precaution could allow
air to enter the ABS, considerably lengthening
the bleeding procedure.
• If bleeding is difficult, it may be necessary to let
the brake fluid settle for a few hours.
• Repeat the bleeding procedure when the tiny
bubbles in the hose have disappeared.
1. Bleed:
• ABS
a. Fill the brake master cylinder reservoir to
the proper level with the specified brake
fluid.
b. Install the brake master cylinder dia-
phragm.
c. Connect a clear plastic hose "1" tightly to
the bleed screw "2".
A
2
1
B
A. Front brake caliper
B. Rear brake caliper
d. Place the other end of the hose into a con-
tainer.
e. Slowly apply the brake several times.
2
1
3-13
PERIODIC MAINTENANCE
f. Fully squeeze the brake lever and hold it in
position.
g. Loosen the bleed screw.
TIP
Loosening the bleed screw will release the pres-
sure and cause the brake lever to contact the
throttle grip or handlebar grip.
h. Tighten the bleed screw and then release
the brake lever.
i. Repeat steps (e) to (h) until all of the air
bubbles have disappeared from the brake
fluid in the plastic hose.
j. Check the operation of the hydraulic unit.
Refer to "HYDRAULIC UNIT OPERA-
TION TESTS" on page 4-67.
k. After operating the ABS, repeat steps (e)
to (i), and then fill the brake master cylin-
der reservoir to the proper level with the
specified brake fluid.
l. Tighten the bleed screw to specification.
Brake caliper bleed screw
6 N·m (0.6 kgf·m, 4.4 lb·ft)
m. Fill the brake master cylinder reservoir to
the proper level with the specified brake
fluid.
Refer to "CHECKING THE BRAKE FLUID
LEVEL" on page 3-11.
EWA13110
WARNING
After bleeding the hydraulic brake system,
check the brake operation.
EAS30638

CHECKING THE WHEELS

The following procedure applies to all of the
wheels.
1. Check:
• Wheel
Damage/out-of-round → Replace.
EWA13260
WARNING
Never attempt to make any repairs to the
wheel.
TIP
After a tire or wheel has been replaced, always
balance the wheel.
2. Measure:
• Radial wheel runout