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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:

Starter torque limiter removal and installation
Removal Remove the clutch assembly. Refer to “clutch removal” in section 5c .  Remove the washer (1), starter idle gear no. 1 (2) And starter torque limiter (3). Installation Installation is in the reverse order of removal. Pay attention to the following point:  apply ...

Front wheel removal
Place the motorcycle on the side stand. Remove both brake calipers from the front forks by removing two mounting bolts 1 on each calipers. Note: never squeeze the front brake lever with the caliper removed. It is very difficult to force the pads back into the caliper asse ...

Rear wheel assembly removal and installation
Removal Loosen the axle nut (1).  Raise the rear wheel off the ground and support the motorcycle with a jack or wooden block. Caution make sure that the motorcycle is supported securely. Remove the axle nut (1).  Loosen the left and right lock-nuts (2) an ...

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