Exup System; Sidestand - Yamaha R1 YZF-R1 Owner's Manual

INSTRUMENT AND CONTROL FUNCTIONS
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EXUP system

This model is equipped with Yamaha's
EXUP (EXhaust Ultimate Power valve)
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system. This system boosts engine
power by means of a valve that controls
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exhaust flow within the exhaust cham-
ber.
4
NOTICE
The EXUP system has been set and
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extensively tested at the Yamaha
factory. Changing these settings
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without sufficient technical knowl-
edge may result in poor perfor-
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mance of or damage to the engine.
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10
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EAU67050

Sidestand

The sidestand is located on the left side
of the frame. Raise the sidestand or
lower it with your foot while holding the
vehicle upright.
TIP
The built-in sidestand switch is part of
ECA15611
the ignition circuit cut-off system, which
cuts the ignition in certain situations.
(See the following section for an expla-
nation of the ignition circuit cut-off sys-
tem.)
WARNING
The vehicle must not be ridden with
the sidestand down, or if the sides-
tand cannot be properly moved up
(or does not stay up), otherwise the
sidestand could contact the ground
and distract the operator, resulting
in a possible loss of control.
Yamaha's ignition circuit cut-off
system has been designed to assist
the operator in fulfilling the respon-
sibility of raising the sidestand be-
fore starting off. Therefore, check
this system regularly and have a
4-45
EAU15306 Yamaha dealer repair it if it does not
function properly.
EWA10242