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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 brake caliper parts inspection
Refer to “front brake caliper disassembly and assembly” . Brake caliper cylinder Inspect the brake caliper cylinder wall for nicks, scratches or other damage. If any damage is found, replace the caliper with a new one. Brake caliper piston Inspect the surface of brake caliper pistons for a ...

Rear suspension assembly construction
Rear shock absorber mounting bolt (upper) Rear shock absorber mounting nut (lower) Cushion rod mounting nut (front) Cushion rod mounting nut (rear) Cushion lever mounting nut Swingarm pivot nut Swingarm pivot boss nut Swingarm pivot shaft Swingarm ...

Steering stem bearing removal and installation
Removal Remove the steering stem upper bearing and steering stem lower bracket. Refer to “steering / steering damper removal and installation” .  Remove the steering stem lower bearing inner race using a chisel. Remove the steering stem upper and lower bearing races using ...

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