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Suzuki GSX-R 1000 Service Manual: 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 actuator motor. The position sensor (incorporated in the excva) detects the excva movement by measuring the voltage and then the ecm determines the excv opening angle based on the engine rpm and gear positions. Every time the ignition switch is turned on, the excva automatically drives the excv and detects full close/open position voltages and sets the excv to middle position.

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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 ex ...

Repair instructions
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Other materials:

Specifications
Tightening torque specifications Note the specified tightening torque is described in the following. “Rear view mirror construction” Reference: for the tightening torque of fastener not specified in this section, refer to “tightening torque list” in section 0c . ...

Balancer shaft journal bearing inspection and selection
Refer to “engine bottom side disassembly” (page 1d- 49). Refer to “engine bottom side assembly” . Inspection Inspect the bearing surfaces for any signs of fusion, pitting, burn or flaws. If any, replace them with a specified set of bearings. Selection Place the plastigauge axial ...

Battery removal and installation
Removal Remove the front seat. Refer to “exterior parts removal and installation” in section 9d (page 9d- 6).  Disconnect the battery (–) lead wire (1).  Disconnect the battery (+) lead wire (2). Note be sure to disconnect the battery (–) lead wire (1) first, th ...

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