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Suzuki GSX-R 1000 Service Manual: Exhaust control system description

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.

Suzuki GSX-R. Exhaust control system description


  1. Exhaust control valve actuator (excva)
  2. Exhaust control valve (excv)
General description
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Exhaust control system operation
The excs is operated by the signal supplied from the ecm. The open/close operation of the excv is performed by the excva which is controlled by the ecm by changing the current direction of the ac ...

Other materials:

Engine assembly installation
Install the engine in the reverse order of engine removal. Pay attention to the following points:  before installing the engine, install the collars (1). Before installing the engine, install the engine mounting thrust adjusters (2). Gradually raise the rear side of ...

Oil pump removal and installation
Note be careful not to drop any parts into the crankcase. Removal Remove the oil pan, oil pressure regulator and oil strainer. Refer to “oil pan / oil pressure regulator / oil strainer removal and installation” .  Remove the oil pump driven gear bolt (1).  Rem ...

Ignition switch inspection
Inspect the ignition switch in the following procedures:  remove the air cleaner box. Refer to “air cleaner box removal and installation” in section 1d .  Disconnect the ignition switch lead wire coupler (1). Inspect the ignition switch for continuity with a tester. If ...

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