Yamaha YZFR1W 2007, Service Manual

Page: 106 / 429

CHASSIS
3-23
WARNING
EWA13050
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.
CAUTION:
ECA13510
After adjusting the brake pedal position,
make sure there is no brake drag.
▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲
3. Adjust:
• Rear brake light switch
Refer to "ADJUSTING THE REAR BRAKE
LIGHT SWITCH" on page 3-24.
EAS21240
CHECKING THE BRAKE FLUID LEVEL
1. Stand the vehicle on a level surface.
NOTE:
• Place the vehicle on a suitable stand.
• Make sure the vehicle is upright.
2. Check:
• Brake fluid level
Below the minimum level mark “a”
→
Add
the recommended brake fluid to the proper
level.
WARNING
EWA13090
• 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
fluids may result in a harmful chemical
reaction, leading to poor brake perfor-
mance.
• 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.
CAUTION:
ECA13540
Brake fluid may damage painted surfaces
and plastic parts. Therefore, always clean
up any spilt brake fluid immediately.
NOTE:
In order to ensure a correct reading of the
brake fluid level, make sure the top of the
brake fluid reservoir is horizontal.
EAS21250
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 indicators “a” almost touch the brake
disc
→
Replace the brake pads as a set.
Refer to "FRONT BRAKE" on page 4-20.
Recommended fluid
DOT 4
A. Front brake
B. Rear brake