Governor Springs

Governor springs for small engines, mainly Briggs & Stratton models including Quantum, Sprint, Classic, Quattro and Vanguard series, along with Honda GX110, GX120, GX140, GX160 and GX270 engines, and a Sanli spring. The governor spring works with the governor linkage to hold the engine at a steady speed under load, so a worn, stretched or broken spring can cause the engine to surge, hunt, or run at the wrong speed.

Some listings include a diaphragm and governor spring kit together where the engine uses a diaphragm-type governor, while others are the spring on its own. Match the spring to your engine's model and type number, or to the original part number, to get the correct fit.

Frequently asked questions

What does a governor spring do?

It connects the governor arm to the throttle linkage and helps hold the engine at a consistent speed as load changes, such as when the mower hits thick grass.

What are signs a governor spring needs replacing?

Engine speed that surges or hunts up and down, or an engine that won't hold a steady idle or running speed, often points to a worn, stretched or broken governor spring.

How do I find the right governor spring for my engine?

Match it to your engine's model and type number stamped on the engine, or compare the original part number against the listings, since springs differ between engine series.