Yamaha YZ250F(E), Owner'S Service Manual

Page: 141 / 356

FRONT BRAKE
4-17
3. Install:
• Brake caliper piston “1”
TIP
Apply the brake fluid on the piston wall.
ECA33DD047
NOTICE
• Install the piston with its side “a” facing
the brake caliper.
• Never force to insert.
EAS1SM1143
INSTALLING THE FRONT BRAKE CALIPER
1. Install:
• Front brake caliper bracket
• Front brake caliper
(temporarily)
• Copper washers
• Brake hose
• Union bolt
EWA13530
WARNING
Proper brake hose routing is essential to in-
sure safe vehicle operation. Refer to “CA-
BLE ROUTING DIAGRAM” on page 2-31.
ECA14170
NOTICE
Make sure that the pipe portion “a” of the
brake hose touches the projection “b” on
the brake caliper.
2. Install:
• Front brake caliper
• Brake pad spring
• Brake pad
• Brake pad pin
• Brake hose holder
Refer to “CHECKING THE FRONT BRAKE
PADS” on page 3-23.
3. Tighten:
• Brake hose holder mounting bolt “1”
TIP
Make sure that the brake hose holder “2” is in-
stalled with its upper end “a” aligned with the
paint “b” on the brake hose.
4. Pour brake fluid to the brake master cylinder
reservoir up to the specified level.
EWA13090
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 pouring the brake fluid, be careful
that water does not enter the reservoir.
Water will significantly lower the boiling
point of the brake fluid and could cause
vapor lock.
Front brake caliper bracket
28 Nm (2.8 m·kgf, 20 ft·lbf)
Brake hose union bolt
30 Nm (3.0 m·kgf, 22 ft·lbf)
1
a
1
New
T
R
.
.
a
b
Brake pad pin
17 Nm (1.7 m·kgf, 12 ft·lbf)
Brake hose holder mounting bolt
9 Nm (0.9 m·kgf, 6.5 ft·lbf)
Recommended brake fluid
DOT 4
T
R
.
.
T
R
.
.
2
1
b
a