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 operationSpecial tools and equipment
Recommended service material
Note
required service material is also described in the following.
“Front brake components”
Special tool
...
Fuel tank construction
Fuel tank heat
shield
: aluminum film side should face the engine side.
Fuel tank front cover
Fuel tank front bracket
Velcro fastenings
: clean the adhesive surface before adhering
the velcro fastenings.
Insert
to the bracket.
Apply
...
Specifications
Service data
Drive train
unit: mm (in) except ratio
Tightening torque specifications
Note
the specified tightening torque is described in the following.
“Transmission components” “gearshift lever construction”
“gearshift shaft / gearshift cam plate componen ...