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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:

Gearshift lever height inspection and adjustment
Inspect and adjust the gearshift lever height in the following procedures:  inspect the gearshift lever height “a” between the lever top and footrest. Adjust the gearshift lever height if necessary. Gearshift lever height “a” standard: 65 – 75 mm (2.6 – 3.0 In) Loosen the l ...

Drive chain inspection and adjustment
Inspect drive chain initially at 1 000 km (600 miles, 2 months) and every 6 000 km (4 000 miles, 12 months) thereafter Drive chain visual check With the transmission in neutral, support the motorcycle using a jack and turn the rear wheel slowly by hand. Visually check the drive chain fo ...

Carrying a passenger
Carrying a passenger, when done correctly, is a great way to share the joy of motorcycling. You will have to alter your riding style somewhat since the extra weight of a passenger will affect handling and braking. You may also need to adjust tire pressures and suspension; please refer to the ...

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