Description
Overview:
The Governed Idle Spring is a genuine Briggs & Stratton component designed for 09T502 Series petrol engines. Made from durable metal, it links the governor system to the throttle to control and stabilise the engine's idle speed. Correct governed idle helps prevent hunting, stalling, and rough running when the machine is idling, improving overall performance and engine life. This OEM spring (part number 691859) is a direct-fit replacement for worn or stretched springs and is suitable for common construction and garden equipment powered by the 09T502 Series, such as lawn mowers, small generators, and compactors. It is straightforward to fit with basic hand tools and is suitable for both DIY users and professional mechanics who need dependable idle control on Briggs & Stratton engines.
Key Features:
- Genuine Briggs & Stratton part for assured compatibility and quality
- OEM No. 691859 for a direct replacement with no modification required
- Maintains accurate governed idle speed to reduce stalling and hunting
- Durable metal construction for reliable, long-term service
- Consistent idle improves fuel use and overall running smoothness
- Supports engine longevity by keeping throttle response stable at idle
- Straightforward to install with standard hand tools
- Suitable for both routine maintenance and fault rectification
- Fits the governor/throttle linkage without adjustment in most cases
- Appropriate for a wide range of 09T502-powered machines used on site or in the garden
Typical Applications:
Used in Briggs & Stratton 09T502 Series engines fitted to lawn mowers, scarifiers, small generators, pressure washers, and light construction equipment. Ideal for restoring stable idle after symptoms such as surging at idle, engine stalling when disengaged, or erratic throttle response during warm-up and low-load operation.
Also known as:
Governed idle spring, governor idle spring, idle speed spring, engine idle spring, throttle governor spring, Briggs & Stratton idle spring.
Fits Models:
09T502 Series
Alternate Part Numbers:
691859, BS691859
Product Specifications
| L&S Part No. | BS691859 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Briggs & Stratton |
| OEM No. | 691859 |
| Unit of Sale | 1 |
| Machine Type | Engines |
| Fits Brands | Briggs & Stratton |
