Description
Overview:
This torsion spring is a Genuine Stihl part for maintaining correct tension in compatible brushcutters and trimmers, including the FS55 and FS55C. Made from durable spring steel, it delivers controlled rotational force to return levers or engage mechanisms reliably, helping your machine operate smoothly. It is designed for an exact fit in specified Stihl models for dependable performance and straightforward replacement of worn or fatigued springs. Key dimensions are: outer diameter 13 mm, inner diameter 11.4 mm, and wire thickness 1 mm. Using the correct, genuine spring preserves the feel and function of the original machine, supports consistent operation, and reduces the likelihood of repeat failures caused by incorrect tension or poor-quality substitutes.
Key Features:
- Genuine Stihl part for assured compatibility and fit
- Stable torsional force to restore smooth return and engagement in the intended mechanism
- Spring steel construction for strength, resilience, and long service life
- Precise 13 mm OD, 11.4 mm ID, 1 mm wire for the correct fit and tension
- Helps resolve weak return action and inconsistent operation caused by fatigued springs
- Engineered to Stihl specifications for reliable performance in demanding use
- Compact size for easy handling and fitting with basic workshop tools
- Suitable as a routine service replacement to keep equipment working efficiently
Typical Applications:
Used within the control or engagement mechanisms of compatible Stihl brushcutters and trimmers to provide reliable return or loading force. Ideal when restoring correct tension after wear, damage, or fatigue, helping ensure consistent trigger, lever, or mechanism action during grass trimming, edging, and general grounds maintenance.
Also known as:
Torsional spring, return torsion spring, coil torsion spring, twist spring, lever return spring, small engine spring, brushcutter return spring, starter/engagement spring (general term).
Fits Models:
FC 55, FC 55 DZ, FS 38, FS 45, FS 45 C, FS 45 L, FS 46, FS 46 C, FS 55, FS 55 C, FS 55 R, FS 55 RC, FS 55 T, HL 45, KM 55, KM 55 C, KM 55 R, KM 55 RC
Alternate Part Numbers:
4140-182-4500, 41401824500
Product Specifications
| L&S Part No. | 4140 182 4500 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Stihl |
| OEM No. | 41401824500 |
| Unit of Sale | 1 |
| Applications | FC 55, FC 55 DZ, FC55, FC55DZ, FS 38, FS 45, FS 45 C, FS 45 L, FS 46, FS 46 C, FS 55, FS 55 C, FS 55 R, FS 55 RC, FS 55 T, FS38, FS45, FS45C, FS45L, FS46, FS46C, FS55, FS55C, FS55R, FS55RC, FS55T, HL 45, HL45, KM 55, KM 55 C, KM 55 R, KM 55 RC, KM55, KM55C, KM55R, KM55RC |
| Machine Type | Brushcutters |
| Fits Brands | Stihl |
| Fits Models | FS38, FS45, FS46 | FS55, FS55C, FS55R | KM55, KM55C, KM55R, KM55RC | FC 55 DZ | HL45 |
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