Midwest Engine 790849 Air Vane Spring OEM Part

Product Details

Genuine Midwest Engine part.

Cross Reference Information

Part Number 790849 replaces AP6141819.

Description

This is a spring that applies tension to the air vane on Briggs & Stratton lawnmower engines. It’s designed to return the air vane to a closed position when the throttle is closed and allow it to open wider as more air is required. This ensures a proper mixture of air and fuel inside the carburetor. Under ordinary circumstances, the air vane spring should not need to be replaced. If the air vane is violently pulled past its standard maximum point, the spring can be damaged. It can also become damaged over time due to corrosion, particularly if the lawnmower is stored outdoors. Replacing the spring is a simple matter. Just remove the old spring, then install the new spring in its place. With most models, no further disassembly will be required. On some other mowers, you may need to remove the carburetor or motor housing to access the air vane spring. Since it has universal applicability, this air vane spring is used on other engines from Toro, Lawn-Boy, and even Cub Cadet. This is an OEM part sourced directly from Briggs & Stratton, and it is sold individually.