Suzuki SFV650, Service Manual

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1D-1 Engine Mechanical:
Engine
Engine Mechanical
General Description
ISC Valve System Description
B944H11401001
SFV650 motorcycles are equipped with a ISC valve
system of secondary throttle valve interlinked. In the
throttle body is provided a bypass through which air
volume is varied when the cutaway on the secondary
throttle shaft is moved, causing the engine idle speed to
be adjusted.
ISC Valve is Closed Position
ISC Valve is Opened Position
Schematic and Routing Diagram
Camshaft and Sprocket Assembly Diagram
B944H11402001
1. Secondary throttle valve 2. Throttle valve
1
2
I944H1140337-02
1. Secondary throttle valve 2. Throttle valve
1
2
I944H1140338-02
Fully closed Opening at 20% Opening at 80% and more
I944H1140340-02
2
1
R
3
1F
2
1R
3
1F
2
1R
3
1F
2
1
R
3
1F
I944H1140350-01