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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:

Front wheel related parts inspection
Refer to “front wheel assembly removal and installation” . Tire Refer to “tire inspection” in section 0b . Front brake disc Refer to “front brake disc inspection” in section 4b . Dust seal Inspect the lip of dust seals for wear or damage. If any defects are found, replace the dust seal ...

Radiator cap inspection
Inspect the radiator cap in the following procedures:  remove the radiator cap. Refer to “cooling circuit inspection” .  Attach the radiator cap (1) to the radiator tester (2) as shown. Slowly apply pressure to the radiator cap. If the radiator cap does not hold the pre ...

Rear brake caliper disassembly and assembly
Refer to “rear brake caliper removal and installation” . Disassembly Remove the pad spring (1) and rubber boot (2) from the caliper. Place a rag over the piston to prevent it from popping out and then force out the piston using compressed air. Caution do not use hig ...

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