Description
Overview:
The Metering Diaphragm is a Genuine Stihl part for the carburettor on compact professional chainsaws, including the MS 201 and MS 201 C. Made from fuel‐resistant synthetic rubber with fabric reinforcement, it controls the metering lever in the carburettor to regulate fuel delivery accurately across idle, part‐throttle, and full load. A worn or stiff diaphragm can cause hard starting, poor idle, or lean running; replacing it restores consistent fuel control and stable engine behaviour. Supplied as a direct replacement under MPN 1145 121 4700, it is designed specifically for Stihl applications to maintain manufacturer performance and reliability standards. Suitable for routine service or fault rectification where fuel metering issues are suspected.
Key Features:
- Genuine Stihl replacement part, MPN 1145 121 4700
- Fuel‐resistant construction for compatibility with modern petrol blends
- Fabric‐reinforced membrane for stable metering and long service life
- Maintains correct fuel delivery for smooth starting and clean acceleration
- Helps prevent lean running and surging caused by a tired diaphragm
- Direct fit for specified models; no modifications required
- Supports reliable idle and consistent power under load
- Suitable for preventative maintenance during carburettor overhaul
Typical Applications:
Used during carburettor servicing or repair on Stihl chainsaws to restore precise fuel control. Ideal when addressing symptoms such as difficult starting, erratic idle, hesitation on throttle, or loss of power. Also suitable as a scheduled maintenance item to keep professional and domestic saws running cleanly and efficiently.
Also known as:
Carburettor metering diaphragm, chainsaw diaphragm, carburettor diaphragm membrane, carb diaphragm, metering membrane for chainsaw carburettor.
Fits Models:
MS 201, MS 201 C, MS 201 T, MS 201 TC, MS201, MS201C, MS201T, MS201TC
Product Specifications
| L&S Part No. | 1145 121 4700 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Stihl |
| OEM No. | 11451214700 |
| Unit of Sale | 1 |
| Machine Type | Chainsaws |
| Fits Brands | Stihl |
| Key Features | - Genuine Stihl part, MPN 1145 121 4700 - Fuel-resistant synthetic rubber with fabric reinforcement - Direct fit for MS 201, MS 201 C, MS 201 T, MS 201 TC - Controls metering lever for accurate fuel delivery - Restores consistent fuel control and stable engine behaviour |
| Fits Models | MS201, MS201C, MS201T, MS201TC |
