Description
Overview:
This governor spring is a genuine Briggs & Stratton part designed to regulate and stabilise engine speed on walk‐behind lawnmower engines. Made from durable steel with the correct factory rate and shape, it works with the engine's governor linkage to keep revs steady as load changes, helping your mower cut cleanly without hunting or surging. It is engineered for popular Briggs & Stratton engines used on many UK mowers, including Sprint Classic 350 and 375 series, and is also specified on selected 450, Quattro 40 and 4.5 models. Using the correct spring preserves safe operating speed and reliable performance. Identified by OEM number 690251, this part is suitable for routine servicing or for restoring proper control after a stretched or broken spring.
Key Features:
- Genuine Briggs & Stratton OEM part (690251) for assured fit and function
- Maintains governed engine speed at idle and under load to reduce hunting and surging
- Correct spring rate and geometry for Sprint Classic and Quattro applications
- Strong steel construction for dependable, long service life
- Helps preserve safe top speed and consistent cutting performance
- Quick, straightforward replacement with basic hand tools
- Ideal for preventative maintenance or fault rectification after wear or damage
- Supports smooth throttle response and cleaner running
- Suitable for domestic users, groundskeepers, and trade workshops
- Supplied as a single replacement spring
Typical Applications:
Used on Briggs & Stratton-powered walk‐behind lawnmowers to replace a worn, stretched, or broken governor spring. Common during seasonal servicing, after storage, or when symptoms include fluctuating revs, poor throttle control, or overspeeding under load. Helps restore steady engine behaviour for efficient grass cutting in gardens, commercial grounds, and hire fleets.
Also known as:
Governor regulator spring, engine speed control spring, governor throttle spring, speed governor spring, governor return spring.
Fits Models:
Sprint Classic 350, 375, 450, Quattro 40, 4.5
Alternate Part Numbers:
690251, BS690251
Product Specifications
| L&S Part No. | BS690251 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Briggs & Stratton |
| OEM No. | 690251 |
| Unit of Sale | 1 |
| Machine Type | Engines, Mowers |
| Fits Brands | Briggs & Stratton |
