Installing The Front Brake Master Cylinder - Yamaha WR450FB 2012 Owner's Service Manual

EAS10X3148
INSTALLING THE FRONT BRAKE MASTER
CYLINDER
1. Install:
• Brake master cylinder
"1"
~
,,,, Brake master cylinder holder bolt
~~
9 Nm (0.9 m·kgf, 6.5 ft-lbf)
TIP _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
•Install the brake master cylinder holder with
the "UP" mark facing up.
• First, tighten the upper bolt, then the lower
bolt.
2. Install:
• Copper washers
DB
•Brake hose
•Union bolt
Brake hose union bolt
30 Nm (3.0 m·kgf, 22 ft-lbf)
EWA13530
A
WARNING
Proper brake hose routing is essential to in-
sure safe vehicle operation. Refer to "CA-
BLE ROUTING" on page 2-29.
ECA1DX1007
~~~~~~~~~~-
Install the brake hose so that it contacts the
brake master cylinder projection
11
a
11
and
that its bent portion
11
b
11
faces downward.
TIP _ _ _ _ _ _ _ _ _ _ _ _ _ _
Turn the handlebar to the left and right to make
sure the brake
hos~
does not touch other parts
(e.g., wire harness, cables, leads). Correct if
necessary.
FRONT BRAKE
3. Fill:
• Brake master cylinder reservoir
(with the specified amount of the recom-
mended brake fluid)
l~I R~~~"!imended
fluid
EWA13540
A
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 flu-
ids may result in a harmful chemical reac-
tion, 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
~--------------------------------~
Brake fluid may damage painted surfaces
and plastic parts. Therefore, always clean
up any spilt brake fluid immediately.
5-25
4. Bleed:
• Brake system
Refer to "BLEEDING THE HYDRAULIC
BRAKE SYSTEM" on page 3-20.
5. Check:
• Brake fluid level
Below the minimum level mark
~
Add the
recommended brake fluid to the proper lev-
el.
Refer to "CHECKING THE BRAKE FLUID
LEVEL" on page 3-17.
6. Check:
• Brake lever free play
Refer to "ADJUSTING THE FRONT DISC
BRAKE" on page 3-18.