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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:

Rear wheel dust seal / bearing removal and installation
Removal Remove the rear wheel assembly. Refer to rear wheel assembly removal and installation .  Remove the rear sprocket mounting drum assembly (1) from the rear wheel. Remove the wheel dampers (2). Remove the dust seal. Special tool (a): 0991350121 (oil s ...

Brake pad
Front Rear Inspect the front and rear brake pads to see if they are worn down to the grooved wear limit line 1. If a pad is worn to the grooved wear limit line, it must be replaced with a new one. After replacing either the front or rear brake pads, the brake lever or pedal must be ...

Drive chain adjustment
Inspect the drive chain slack before each use of the motorcycle. Place the motorcycle on the side stand. The drive chain should be adjusted for 20 - 30 mm (0.8 - 1.2 In) of slack, as shown. Warning Too much chain slack can cause the chain to come off the sprockets, resul ...

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