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 operationRear brake master cylinder components
Reservoir cap
Plate
Diaphragm
Reservoir tank
Reservoir hose
Brake hose
Brake hose union bolt
Brake hose connector
Master cylinder
Spring
Piston/cup set
Push rod
Dust boot
23 N·m (2.3 Kgf-m,
16.5 Lbf-ft)
10 N·m
...
Starting off
Warning
Riding this motorcycle at
excessive speed increases
your chances of losing control
of the motorcycle. This may
result in an accident.
Always ride within the limits of
your skills, your motorcycle,
and the riding conditions.
Warning
Remov ...
Cylinder inspection
Refer to “engine top side disassembly” .
Refer to “engine top side assembly” .
Cylinder distortion
Check the gasket surface of the cylinder for distortion.
Use a straightedge and thickness gauge. Take clearance
readings at several places. If any reading exceeds the
service limit, replace t ...