![]() ![]() A small flat head screwdriver – to remove the air filter housing located above the carburetor.Required toolsĪ few basic small engine tools are required to remove or replace the throttle springs on a lawn mower powered by a Briggs and Stratton engine. Pulse-jet carburetors were common on 5-8HP engine models used by garden tillers, too. This diagram shows throttle spring link locations on older pulse-jet style Briggs and Stratton engines. Briggs and Stratton Throttle Spring Linkage Diagram #2 It links from the governor arm to the throttle control lever, which is typically located at the front of lawn mowers that are powered by Briggs and Stratton small engines. Spring #2, the longer of the two, is called a governor spring (part #699056 on Amazon). It connects from the governor arm to a small metal tab located right next to the governor arm. Spring #1, the shorter of the two, is called an air vane spring (part #790849 on Amazon). These engines have two springs, both of which connect to the governor arm on one side. This diagram shows throttle spring link locations on a Briggs and Stratton engine that uses a typical plastic carburetor with primer bulb. Briggs and Stratton Throttle Spring Linkage Diagram #1 The diagrams depict the most common throttle spring linkage locations for Briggs and Stratton powered lawn mowers. Shown below are two linkage diagrams for Briggs and Stratton throttle springs. The precise method of linkage can vary depending on the specific engine model and design, but the objective is to establish a secure connection between the throttle spring and the throttle linkage, allowing the spring to exert the necessary tension to regulate the throttle position. This linkage allows the spring to exert tension and control the throttle position. How is a throttle spring linked?Ī throttle spring in Briggs and Stratton engines is connected to the throttle linkage, typically through a hook or loop connection, pin connection, or bracket connection. Inspecting the throttle springs is an important part of carburetor maintenance. The throttle spring in Briggs and Stratton engines plays a crucial role in maintaining stable and controlled engine operation, providing the necessary tension to regulate the throttle position and ensure proper air-fuel mixture delivery for optimal performance. This restricts the flow of air and fuel into the engine, resulting in a lower idle or reduced speed. When the engine is started or running, the throttle spring provides a pulling force on the throttle linkage or plate, helping to keep it in a closed or partially closed position. The throttle spring is typically connected to the throttle linkage or throttle plate and exerts tension on it. In Briggs and Stratton engines, the throttle spring is designed to work in conjunction with the throttle mechanism to control the engine speed. A throttle spring is a small mechanical component designed to control the throttle mechanism, which regulates the amount of air and fuel mixture entering the engine to control its speed or power output. ![]()
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