Description
Overview:
This governor spring is a Genuine Briggs & Stratton part for small petrol engines, designed to keep engine speed steady under changing loads. Made from precision-formed steel, it sits in the governor linkage to control throttle movement and maintain a consistent governed RPM. It is a direct replacement for part number 596552 and is suited to popular vertical-shaft engines used on lawn and garden equipment. Ideal for routine maintenance or repair, it helps prevent hunting, surging, or overspeeding that can lead to poor performance or damage. Compatible with Briggs & Stratton 103M02 and 104M02 series engines, it's suitable for lawn mowers, generators, and other compact machinery where reliable speed control is essential.
Key Features:
- Genuine Briggs & Stratton part 596552 for correct fit and function on listed engines
- Regulates throttle to maintain steady governed speed and smooth running
- Durable steel spring provides consistent tension and long service life
- Factory-style hook ends for straightforward, tool-light installation
- Direct replacement design; no modifications required when used on compatible models
- Helps reduce hunting, surging, and overspeeding under load changes
- Suitable for professional and DIY servicing of small petrol equipment
- Supports reliable performance after carburettor, linkage, or governor adjustments
- Compatible across many 103M02, 104M02, 104M05, and 104M0B variants (see list)
Typical Applications:
Used on Briggs & Stratton-powered walk-behind lawn mowers, small generators, compact tillers, and pressure washers to restore correct governor operation. Fit this spring when replacing worn linkage parts, after carburettor servicing, or when diagnosing unstable engine speed, surging, or poor load response.
Also known as:
Governor spring, engine speed regulator spring, throttle governor spring, speed control spring, governor control spring, engine governor return spring, throttle control spring.
Fits Models:
103M02, 103M02-0029-H5, 103M02-0032-H5, 103M02-0039-H5, 103M02-0079-H5, 103M02-0085-H1, 103M02-0098-H5, 103M02-0099-H5, 103M02/0079-H1, 104M02-0029-H5, 104M02-0092-H5, 104M02-0141-H5, 104M02-0142-H5, 104M02-0147-H5, 104M02-0149-H1, 104M02-0149-H5, 104M02-0158-H5, 104M02-0180-F1, 104M02-0225-H5, 104M02-0228-H5, 104M02-0292-H5, 104M05-0032-H5, 104M05-0229-H5, 104M0B-0068-H5, 104M0B-0077-H5, 104M0B-0123-H5, 104M0B-0140-H5, 104M0B-0159-H5, 104M0B-0178-H1, 104M0B-0230-H5, 104M0B-0267-H5, 104M0B-0271-H5, 104M0B-0272-H5, 104M0B-0273-H5
Alternate Part Numbers:
596552, BS596552
Product Specifications
| L&S Part No. | BS596552 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Briggs & Stratton |
| OEM No. | B596552 |
| Unit of Sale | 1 |
| Machine Type | Engines |
| Fits Brands | Briggs & Stratton |
| Key Features | - Genuine Briggs & Stratton part 596552 ensures correct fit - Compatible with 103M02 and 104M02 series engines - Precision-formed steel for consistent tension and durability - Factory-style hook ends for easy installation - Direct replacement; no modifications needed on compatible models |
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