Yamaha R1 Series 2015, Service Manual

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FEATURES
1-31
EAS30983
ABS AND UBS FUNCTION
WARNING
EWA17260
• When hydraulic control is performed by the ABS, the brake system alerts the rider that the
wheels have a tendency to lock by generating a reaction-force pulsating action in the brake
lever or brake pedal. When the ABS is activated, the grip between the road surface and tires
is close to the limit. The ABS cannot prevent wheel lock* on slippery surfaces, such as ice,
when it is caused by engine braking, even if the ABS is activated.
• The ABS and UBS is not designed to shorten the braking distance or improve the cornering
performance.
• Depending on the road conditions, the braking distance may be longer compared to that of
vehicles not equipped with ABS. Therefore, ride at a safe speed and keep a safe distance be-
tween yourself and other vehicles.
• The braking of the vehicle, even in the worst case, is principally executed when the vehicle is
advancing straight ahead. During a turn, sudden braking is liable to cause a loss of traction of
the tires. Even vehicles equipped with ABS cannot be prevented from falling over if braked
suddenly.
• The ABS and UBS do not work when the main switch is set to “OFF”. The conventional braking
function can be used.
* Wheel lock: A condition that occurs when the rotation of one or both of the wheels has
stopped, but the vehicle continues to travel.