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 operationFuel pump relay inspection
Refer to “electrical components location” in section 0a .
Inspect the fuel pump relay in the following procedures:
remove the frame covers. Refer to “exterior parts
removal and installation” in section 9d (page 9d-
6).
Remove the fuel pump relay (1).
First, check f ...
Front brake disc removal and installation
Removal
Remove the front wheel assembly. Refer to “front wheel assembly removal
and installation” in section 2d .
Remove the front brake disc.
Installation
Install the front brake disc in the reverse order of
removal. Pay attention to the following points:
make sure ...
Engine top side assembly
Assemble the engine top side in the reverse order of
disassembly. Pay attention to the following points:
Cylinder head
Install the dowel pins and a new cylinder head gasket
(1) to the cylinder.
Caution
use a new gasket to prevent gas leakage.
Place the cylinder head ...