The exhaust control system (excs) consists of the exhaust control valve (excv), exhaust control valve actuator (excva) and exhaust control valve cables (excv cables).
Excv is installed in the exhaust pipe. Excva is mounted inside of the right frame. The excv is operated by the excva via the cables. This system is designed to improve the engine torque at low engine rpm.

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Exhaust control system operationPrecautions
Precautions for wheel and tire
Proper tire pressure and proper tire loading are important
factors. Over loading tire can lead to tire
failure and loss of motorcycle control.
Under-inflated tires make smooth cornering difficult, and
can result in rapid tire wear.
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Special tools and equipment
Recommended service material
Note
required service material is also described in the following.
“Throttle body components” “engine bottom side assembly”
Special tool
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Tire inspection
Inspect tire
every 6 000 km (4 000 miles, 12 months)
Tire tread condition
Operating the motorcycle with excessively worn tires will
decrease riding stability and consequently invite a
dangerous situation. It is highly recommended to replace
a tire when the remaining depth of tire tread reaches ...