2011 Yamaha Motorsports Apex SE Owners Manual - Page 40

2011 Yamaha Motorsports Apex SE Manual

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Control functions 1 3 2 1. Red paint area 2. Adjustable range 3. Standard position 3. Tighten the locknut while holding the adjusting nut in place. NOTICE: Always tighten the locknut against the adjusting nut, and then tighten the locknut to the specified torque. [ECS00860] Locknut tightening torque: 25 Nm (2.5 m·kgf, 18 ft·lbf) 1. Locknut 2. Control rod adjusting nut ESU13820 EXUP system This model is equipped with Yamaha's EXUP (EXhaust Ultimate Power valve) system. This system boosts engine power by means of a valve that regulates the inner diameter of the exhaust pipe. The EXUP system valve is constantly adjusted in accordance with the engine speed by a computer-controlled servomotor. ECS01020 2. To increase weight transfer, turn the adjusting nut in direction (a), and to decrease weight transfer, turn it in direction (b). WARNING! Never adjust the control rods beyond the maximum setting, indicated by red paint; otherwise, they could be damaged, which could lead to an accident or injury. [EWS00173] NOTICE The EXUP system has been set and extensively tested at the Yamaha factory. Changing these settings without sufficient technical knowledge may result in poor performance of or damage to the engine. 34

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Control functions
34
2.
To increase weight transfer, turn the ad-
justing nut in direction (a), and to de-
crease weight transfer, turn it in direction
(b).
WARNING! Never adjust the con-
trol rods beyond the maximum set-
ting, indicated by red paint; otherwise,
they could be damaged, which could
lead to an accident or injury.
[EWS00173]
3.
Tighten the locknut while holding the ad-
justing nut in place.
NOTICE:
Always
tighten the locknut against the adjust-
ing nut, and then tighten the locknut to
the specified torque.
[ECS00860]
ESU13820
EXUP system
This model is equipped with Yamaha’s EXUP
(EXhaust Ultimate Power valve) system. This
system boosts engine power by means of a
valve that regulates the inner diameter of the
exhaust pipe. The EXUP system valve is con-
stantly adjusted in accordance with the en-
gine
speed
by
a
computer-controlled
servomotor.
NOTICE
ECS01020
The EXUP system has been set and exten-
sively tested at the Yamaha factory.
Changing these settings without sufficient
technical knowledge may result in poor
performance of or damage to the engine.
1. Locknut
2.
Control rod adjusting nut
1.
Red paint area
2.
Adjustable range
3.
Standard position
Locknut tightening torque:
25 Nm (2.5 m·kgf, 18 ft·lbf)
1
3
2