Description
Overview:
This genuine Stihl low speed adjustment screw (OEM 4237 120 6802) is a precision metal component for Stihl petrol hedgetrimmers, including the HS82 and HS87. It threads into the carburettor and controls the low‐speed (L) fuel/air mixture, allowing accurate tuning of idle quality and throttle pick‐up. Built from durable metal for repeatable, fine adjustments, it resists wear from regular servicing. Replacing a worn, seized or missing screw restores proper mixture control so the engine runs smoothly at idle, responds cleanly off‐idle, and cuts consistently. The part matches the original specification for a straightforward fit with no modification, helping you maintain dependable performance and extend the service life of your equipment.
Key Features:
- Genuine Stihl part for assured compatibility and performance
- OEM reference 4237 120 6802 for easy identification
- Precision-machined metal screw for consistent, fine adjustments
- Controls low‐speed (L) mixture for stable idle and clean acceleration
- Helps reduce stalling, hunting and hesitation at low throttle
- Direct replacement; no modification to the carburettor required
- Durable construction for long service life and repeated tuning
- Easy to fit during routine service or repair
- Compatible with HS82 and HS87 hedgetrimmers
- Supports efficient running, cleaner cuts and reduced downtime
Typical Applications:
Used when tuning the carburettor after service, filter or fuel system work, or when the engine idles poorly, bogs on pick‐up, or the original screw has been damaged or lost. Suitable for regular maintenance by professional landscapers and gardeners to keep HS82/HS87 hedgetrimmers running smoothly across the season.
Also known as:
L screw, low‐speed mixture screw, idle mixture screw, mixture adjuster, carburettor adjuster screw, tuning screw, pilot circuit screw, low jet screw.
Fits Models:
HS82, HS87
Alternate Part Numbers:
4237-120-6802, 42371206802
Product Specifications
| L&S Part No. | 4237 120 6802 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Stihl |
| OEM No. | 42371206802 |
| Unit of Sale | 1 |
| Machine Type | Hedgetrimmers |
| Fits Brands | Stihl |
| Key Features | - Genuine Stihl part ensures compatibility with HS82 and HS87 models - Precision-machined metal for consistent, fine adjustments - Controls low-speed mixture for stable idle and clean acceleration - Direct replacement; no carburettor modification needed - Durable construction for long service life and repeated tuning |
| Fits Models | HS82 | HS87 |

