Description
Overview:
The Idle Speed Adjustment Screw is a genuine Stihl component (OEM part no. 1139 122 6200) used to set the carburettor throttle stop for accurate idle speed tuning. Its durable construction supports frequent adjustments during servicing, helping the engine idle smoothly without stalling or driving the chain unintentionally. Designed for Stihl machines that use this specification, including the MS211 and MS211C, it replaces worn, damaged, or missing screws to restore reliable tickover control. The precise thread and head profile give secure engagement and predictable, fine adjustments with small turns, making it practical for both workshop and on-site maintenance. This is a direct-fit part that supports consistent performance after air filter, carburettor, or fuel system work.
Key Features:
- Genuine Stihl part for assured fit and compatibility
- Direct replacement for OEM part no. 1139 122 6200
- Enables precise idle speed setting via the carburettor throttle stop
- Helps prevent chain movement at idle and reduces stalling
- Robust construction suited to regular tuning and servicing
- Smooth, consistent thread for repeatable adjustments
- Simple to fit with standard hand tools, minimal downtime
- Compatible with a wide range of listed Stihl models
Typical Applications:
Used during servicing and tuning to restore correct idle after carburettor cleaning, diaphragm replacement, or seasonal fuel changes. Replaces stripped, bent, or missing screws to regain accurate tickover on saws and brushcutters. Suitable for bench work in a workshop or on-site maintenance by tradespeople, landscapers, arborists, and home users.
Also known as:
LA screw, throttle stop screw, tickover screw, carburettor stop screw, idle speed screw.
Fits Models:
038, FR410C, FR460TC, FS240, FS260, FS360C, FS410C, MS162, MS162C, MS171, MS171C, MS172, MS172C, MS181, MS181C, MS211, MS211C, MS361, MS361C, MS380, MS381, MS382, MS651
Alternate Part Numbers:
1139 122 6200, 11391226200
Product Specifications
| L&S Part No. | 1139 122 6200 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Stihl |
| OEM No. | 11391226200 |
| Unit of Sale | 1 |
| Applications | 038, FR410C, FR460TC, FS240, FS260, FS360C, FS410C, MS162 / MS162C, MS171, MS171C, MS172 / MS172C, MS181, MS181C, MS211, MS211C, MS361, MS361C, MS380, MS381, MS382, MS651 |
| Machine Type | Chainsaws |
| Fits Brands | Stihl |
| Fits Models | MS361, MS361C | MS380 | MS171, MS171C | MS181, MS181C | MS211, MS211C | FS240, FS260 | FS360C FS410C | FR410C, FR460TC | MS381 | MS382 | MS651 | 038 | MS162 / MS162C | MS172 / MS172C | MS212 / MS212C | MS182 / MS182C |
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