Description
Overview:
The Compression Spring is a genuine Stihl replacement part for strimmers, designed to restore and maintain correct tension in the mowing head. Made from durable steel, it sits inside the AutoCut C 3-2 head to keep the spool and cover under consistent pressure, ensuring smooth bump-feed line advance and tidy retraction. This spring is suitable for Stihl electric and battery trimmers that use the C 3-2 head, including the FSE 57 and FSE 52. It is a simple, small component that makes a big difference to day-to-day cutting performance, helping prevent poor line feed, rattles and uneven wear. OEM number: 4009 997 3100. Genuine Stihl part for assured fit, reliability and long service life.
Key Features:
- Genuine Stihl part (OEM 4009 997 3100) for correct fit and compatibility
- Designed for AutoCut C 3-2 mowing heads on popular Stihl strimmers
- Durable steel construction for consistent spring force and longevity
- Maintains proper spool tension for reliable bump-feed line advance
- Helps reduce line slippage, poor feed and premature head wear
- Quick, straightforward installation during routine head servicing
- Direct replacement part with no modification required
- Suitable for professional grounds care and domestic garden use
- Compact spare that is easy to carry and replace in the field
- Supports smooth trimming after line refills and cleaning
Typical Applications:
Used to restore correct tension in Stihl AutoCut C 3-2 mowing heads when the line is not feeding properly, the head feels loose, or after routine maintenance and line refills. Ideal for keeping strimmers working efficiently on lawn edges, borders, paths and around obstacles in gardens, parks, commercial sites and housing estates.
Also known as:
Strimmer spring, mowing head spring, tension spring, spool spring, feed spring, AutoCut spring, head compression spring, trimmer head spring, line feed spring, reel spring.
Fits Models:
FSA57, FSE 52, FSE 57, FSE52, FSE57
Product Specifications
| L&S Part No. | 4009 997 3100 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Stihl |
| OEM No. | 40099973100 |
| Unit of Sale | 1 |
| Machine Type | Strimmers |
| Fits Brands | Stihl |
| Key Features | - Genuine Stihl part (OEM 4009 997 3100) for correct fit - Designed for AutoCut C 3-2 mowing heads - Durable steel construction ensures consistent spring force - Maintains spool tension for reliable bump-feed line advance - Suitable for FSE 57 and FSE 52 trimmers |
| Fits Models | FSE52 | FSA57 |
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