This component, found within certain Suzuki outboard engines, regulates the amount of air that bypasses the throttle plate when the engine is idling. Functionally, it manages the air-fuel mixture at low engine speeds to maintain a stable and consistent idle. Its correct operation is crucial for smooth starting, preventing stalling, and ensuring efficient fuel consumption during periods of inactivity.
The precision control offered by this valve contributes significantly to overall engine performance and longevity. A properly functioning system minimizes emissions, reduces wear on engine components, and enhances the overall boating experience. Historically, simpler systems relied on fixed jets, but the advent of electronically controlled valves allows for dynamic adjustment based on engine temperature and load, resulting in improved responsiveness and fuel efficiency.
