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.
Full close
Full open
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 ...
Other materials:
Specifications
Service data
Brake
unit: mm (in)
Tightening torque specifications
Note
the specified tightening torque is described in the following.
“Front brake hose routing diagram” “rear brake hose routing
diagram” “front brake master cylinder components” “rear
...
Valve clearance inspection and adjustment
Inspect valve clearance
initially every 24 000 km (14 500 miles, 48 months)
Inspection
Valve clearance adjustment must be checked and
adjusted, a) at the time of periodic inspection, b) when
the valve mechanism is serviced, and c) when the
camshafts are removed for servicing.
Lift an ...
Valve seat repair
The valve seats (1) for both the intake and exhaust
valves are machined to three different angles. The seat
contact surface is cut at 45°.
Intake valve
Exhaust valve
Caution
the valve seat contact area must be
inspected after e ...