Briggs & Stratton Spring‑Air Vane – 790849

Product Details & Features

Ensure your Briggs & Stratton small‑engine starts smoothly and runs efficiently with this genuine OEM Spring‑Air Vane (Part 790849). This critical engine component is part of the automatic choke/air flow system, designed to help regulate airflow and support proper engine speed control. 

The 790849 Spring‑Air Vane combines a resilient spring and lightweight vane that works with airflow from the engine’s flywheel fan to help maintain correct choke and throttle tension. When installed in the air handling assembly of compatible Briggs & Stratton engines, it plays a key role in ensuring stable idle speeds, smoother throttle response, and easier starting — especially when the engine is cold.

Key Features:

• Genuine OEM Quality: Manufactured to Briggs & Stratton’s exact specifications for fit, durability and long‑lasting performance.

• Airflow Regulation: Helps control the automatic choke/air vane movement by responding to cooling airflow, supporting consistent engine revs.

• Improved Starting: A functioning air vane spring helps ensure the choke returns correctly, reducing hard starts and poor cold‑engine performance. 

• Durable Construction: Designed to withstand typical engine heat and vibration conditions. 

• Straightforward Replacement: Easy to install with basic tools during routine maintenance or when restoring proper engine operation. 

Why It Matters:
A worn or weakened air vane spring can lead to inconsistent throttle response, engines that struggle to start, or difficulty holding idle. Replacing it with this genuine 790849 Spring‑Air Vane helps restore your engine’s reliable performance and prolongs the life of your outdoor power equipment.