Adjusting The Front Disc Brake; Checking The Front Brake Pads - Yamaha WR450FB 2012 Owner's Service Manual

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 refilling, be careful that water does
not enter the brake fluid reservoir. Water
will significantly lower the boiling 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.
EAS1DX3094

ADJUSTING THE FRONT DISC BRAKE

1. Check:
• Brake lever position "a"
Brake lever position
Standard position
95 mm (3.74 in)
Extent of adjustment
76–97 mm (2.99–3.82 in)
2. Remove:
• Brake lever cover
3. Adjust:
• Brake lever position
PERIODIC MAINTENANCE
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a. Loosen the locknut "1".
b. Turn the adjusting bolt "2" in direction "a" or
"b" until the specified brake lever position is
obtained.
Direction "a"
Brake lever position is increased.
Direction "b"
Brake lever position is decreased.
c. Tighten the locknut "1".
Locknut
5 Nm (0.5 m·kgf, 3.6 ft·lbf)
EWA13050
WARNING
A soft or spongy feeling in the brake lever
can indicate the presence of air in the brake
system. Before the vehicle is operated, the
air must be removed by bleeding the brake
system. Air in the brake system will consid-
erably reduce braking performance.
ECA13490
NOTICE
After adjusting the brake lever position,
make sure there is no brake drag.
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EAS1DX3095

CHECKING THE FRONT BRAKE PADS

The following procedure applies to all of the
brake pads.
1. Operate the brake.
2. Check:
• Front brake pad
Wear indicator groove "1" almost disap-
peared Replace the brake pads as a set.
Refer to "FRONT BRAKE" on page 5-15.
3-18
a
b