Description
Overview:
The Metering Diaphragm is a Genuine Stihl part for the carburettor metering circuit on Stihl chainsaws, including the MS380 and MS381. Made from a flexible, fuel‐resistant composite designed to cope with heat and vibration, it regulates fuel delivery so the saw starts well, idles cleanly, and picks up reliably under load. As a direct replacement for OEM part number 1119 121 4701, it restores correct function when the original diaphragm has hardened, warped, or split. Suitable for professional and farm use, it supports dependable running in demanding cutting tasks. The diaphragm works with the metering lever and needle to keep the fuel level steady inside the carburettor, helping to prevent lean surging or flooding. Built to Stihl standards for fit and durability, it installs without modifications.
Key Features:
- Genuine Stihl part for assured fit and compatibility (OEM 1119 121 4701)
- Regulates fuel accurately for smooth idle, strong acceleration, and stable power
- Fuel‐resistant composite material for long service life with 2‐stroke petrol/oil mix
- Helps cure symptoms of a worn diaphragm such as hard starting, bogging, or over‐fuelling
- Precision dimensions for a secure seal and consistent metering performance
- Robust design to withstand vibration, temperature changes, and regular use
- Direct replacement with no modifications to the carburettor body
- Suitable for routine servicing and carburettor rebuilds to maintain reliability
- Genuine Part status supports long-term durability and parts traceability
- After installation, a standard carburettor mixture check may be required
Typical Applications:
Used during routine servicing or a carburettor rebuild when a chainsaw shows poor idle, hesitation, surging, or flooding. Ideal for restoring fuel control after long storage or heavy use in forestry, landscaping, and farm work. Replaces aged or damaged diaphragms to maintain reliable cold starts and consistent cutting performance.
Also known as:
Carburettor metering diaphragm, carb diaphragm, metering membrane, carburettor membrane, fuel diaphragm, carburettor fuel control diaphragm.
Fits Models:
038, MS 380, MS 381, MS380, MS381
Alternate Part Numbers:
1119-121-4701, 11191214701
Product Specifications
| L&S Part No. | 1119 121 4701 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Stihl |
| OEM No. | 11191214701 |
| Unit of Sale | 1 |
| Machine Type | Chainsaws |
| Fits Brands | Stihl |
| Key Features | - Genuine Stihl part, OEM 1119 121 4701 - Fits Stihl chainsaws MS380, MS381 - Fuel-resistant composite for 2-stroke engines - Direct replacement, no carburettor modifications - Regulates fuel for smooth idle and acceleration |
| Fits Models | MS380 | MS381 | 038 |
