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 operationFastener removal and installation
Type a
Removal
Depress the head of fastener center piece (1).
Pull out the fastener (2).
Installation
Let the center piece stick out toward the head so that
the pawls “a” closes.
Insert the fastener into the installation hole.
Note
to prevent the pawl ...
Tire removal and installation
Removal
The most critical factor of a tubeless tire is the seal
between the wheel rim and the tire bead. For this
reason, it is recommended to use a tire changer that can
satisfy this sealing requirement and can make the
operation efficient as well as functional.
Removal the wheel ass ...
Starter motor inspection
Refer to “starter motor disassembly and assembly” .
Carbon brush
Inspect the carbon brushes for abnormal wear, cracks or
smoothness in the brush holder.
If either carbon brush is defective, replace the brush
holder set with a new one.
Measure the length “a” of the carbon brushes using a
v ...