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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:

Clutch lifter pin inspection and adjustment
Refer to “clutch removal”  and “clutch installation” . Note when inspection and adjusting the clutch lifter pin, it is not necessary to install the clutch onto the countershaft. Inspect and adjust the clutch lifter pin in the following procedures:  assemble the ...

Special tools and equipment
Recommended service material Note required service material is also described in the following. “Front brake master cylinder components”  “rear brake master cylinder components”  “rear brake pedal construction” Special tool ...

Rear wheel assembly construction
Rear sprocket nut Rear axle nut Brake disc bolt Clearance 60 N·m (6.0 Kgf-m, 43.0 Lbf-ft) 100 N·m (10 kgf-m, 72.5 Lbf-ft) 35 N·m (3.5 Kgf-m, 25.5 Lbf-ft) Apply grease. Apply thread lock to the thread part. ...

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