Poktlife Springs for Briggs & Stratton Engines - Air Vane and Governor Springs for Toro Craftsman Troy Bilt Lawn Mowers

When looking for replacement parts compatible with certain BS models, you will find the following information essential:

For the replacements, part numbers include 699056 and 490-404, which are specifically designed to work with BS models 122H02 and 122K02. Additionally, another significant part to consider is 790849, which refers to the spring responsible for connecting from the choke arm situated above the carburetor.

Both springs play crucial roles in the effective functioning of multiple Briggs & Stratton engines, particularly those used in various mowers that rely on these engines.

The shorter of the two springs, known as the air vane spring, is an integral component of the auto-choke system. Its primary function is to maintain the correct tension on the air vane, ensuring that the choke operates effectively during engine starting and running. This is vital for optimal performance as it regulates the air-fuel mixture entering the engine.

On the other hand, the longer spring is referred to as the governor spring. This spring is essential for applying the necessary tension to the throttle, which in turn controls the engine's speed. By ensuring the right tension is maintained, it allows for precise adjustments in response to the engine load, contributing significantly to overall engine performance.

In summary, if you're working on Briggs & Stratton engines or mowers that utilize them, understanding the functionality and compatibility of these springs—part numbers 699056, 490-404, and 790849—is vital for achieving reliable performance. The air vane spring ensures the auto-choke system operates smoothly, while the governor spring manages engine speed effectively. Proper attention to these components can lead to an enhanced mowing experience and prolonged engine life.

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