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INSTRUMENT AND CONTROL FUNCTIONS
EXUP system
This motorcycle is equipped with
Yamaha's EXUP (EXhaust Ultimate
Power valve) system. This system
boosts engine power by means of a
valve that regulates the diameter of the
exhaust pipe. The EXUP system valve
3
is constantly adjusted in accordance
with the engine speed by a computer-
controlled servomotor.
CAUTION:
_
G
The EXUP system has been set
and extensively tested at the
Yamaha
factory.
these settings without sufficient
technical knowledge may result
in poor performance of or dam-
age to the engine.
G
If the EXUP system does not op-
erate, have a Yamaha dealer
check it.
_
EAU01571
Sidestand
The sidestand is located on the left side
of the frame. Raise the sidestand or
lower it with your foot while holding the
motorcycle upright.
NOTE:
_
The built-in sidestand switch is part of
the ignition circuit cut-off system, which
cuts the ignition in certain situations.
(See further down for an explanation of
EC000027
the ignition circuit cut-off system.)
_
Changing
EAU00330
_
The motorcycle must not be ridden
with the sidestand down, or if the
sidestand
moved up (or does not stay up), oth-
erwise the sidestand could contact
the ground and distract the opera-
tor, resulting in a possible loss of
control. Yamaha's ignition circuit
cut-off system has been designed to
assist the operator in fulfilling the
responsibility of raising the side-
stand before starting off. Therefore,
check this system regularly as de-
scribed below and have a Yamaha
dealer repair it if it does not function
properly.
_
3-17
WARNING
cannot
be
properly
EW000044
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