Description
Overview:
The Carburettor C1Q-S123B is a genuine Stihl replacement part for compact petrol chainsaws, engineered to meter and deliver the correct air-fuel mixture to the engine. Built with a robust metal body and fuel‐resistant internal components, it helps maintain smooth idling, clean acceleration, and reliable cutting power. Designed for the Stihl MS 171 and MS 171 C, it integrates with the existing throttle linkage and fuel lines for a straightforward swap when a worn or clogged carburettor causes hard starting, stalling, or poor performance. Choosing this genuine OEM unit preserves intended fit and calibration, supporting consistent running in both professional and home use.
Key Features:
- Genuine Stihl part for assured compatibility and reliability
- Precisely controls air-fuel ratio for stable idle and strong throttle response
- Durable construction for long service life in dusty, high‐vibration conditions
- Direct-fit design for the MS 171 platform to simplify installation
- Helps restore easy starting and consistent power output
- Supports efficient fuel use and cleaner running when correctly tuned
- Suitable for routine maintenance or as a like‐for‐like replacement
- Compatible with standard service procedures and existing fixings
Typical Applications:
Used to replace a malfunctioning carburettor on Stihl MS 171 series saws to resolve issues such as difficult starting, uneven idle, bogging under load, or increased fuel consumption. Ideal for firewood cutting, pruning, property maintenance, and general landscaping where dependable engine performance is required.
Also known as:
Carb, carburetor (US spelling), fuel mixer, mixing unit, fuel metering unit, carb body, chainsaw carb assembly.
Fits Models:
MS 171, MS 171 C, MS171, MS171C
Alternate Part Numbers:
1139-120-0607, 11391200607
Product Specifications
| L&S Part No. | 1139 120 0607 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Stihl |
| OEM No. | 11391200607 |
| Unit of Sale | 1 |
| Applications | MS 171, MS 171 C, MS171, MS171C |
| Machine Type | Chainsaws |
| Fits Brands | Stihl |
| Fits Models | MS171, MS171C |
