Description
Overview:
The Metering Diaphragm for Stihl MS260 and MS260C is a Genuine Part designed to restore precise fuel control in your chainsaw's carburettor. This thin, flexible diaphragm is made from a fuel‐resistant rubber composite, engineered to flex accurately under small pressure changes so the carburettor can meter fuel correctly. By keeping the air-fuel mixture stable across idle, acceleration, and load, it helps your saw start reliably, hold a steady tick‐over, and deliver full power under cut. It is a direct replacement component for Stihl saws that use this specification diaphragm, making it suitable for routine service work or to cure symptoms such as poor pick‐up, erratic idle, or hard starting on models like the MS260 and MS260C.
Key Features:
- Genuine Stihl OEM diaphragm for assured fit and function
- Precise fuel metering to maintain correct air-fuel ratio
- Fuel‐resistant material for durability with modern petrol blends
- Helps cure hard starting, bogging, and inconsistent idle
- Supports smooth acceleration and stable top‐end performance
- Designed for quick, straightforward replacement during a carburettor service
- Consistent thickness and elasticity for repeatable tuning results
- Suitable for professional use and regular maintenance schedules
Typical Applications:
Used during carburettor maintenance or overhaul on compatible Stihl chainsaws. Ideal when a saw has been stored with stale fuel, shows signs of lean running or flooding, or after long service intervals. Commonly fitted alongside gaskets, pump diaphragm, and needle valve checks to restore reliable starting, smooth idle, and clean throttle response in everyday cutting, firewood processing, and site work.
Also known as:
Fuel metering diaphragm, carburettor diaphragm, metering membrane, carb diaphragm, fuel control diaphragm, carburettor fuel membrane. Often referenced within carburettor service kits and repair sets as the metering side diaphragm that works with the needle and lever assembly to regulate fuel delivery.
Fits Models:
MS 240, MS 260, MS 260 C, MS 311, MS 362, MS 362 C, MS 391
Alternate Part Numbers:
1121-121-4700, 11211214700
Product Specifications
| L&S Part No. | 1121 121 4700 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Stihl |
| OEM No. | 11211214700 |
| Unit of Sale | 1 |
| Machine Type | Chainsaws |
| Fits Brands | Stihl |
| Key Features | - Genuine Stihl OEM diaphragm ensures correct fit and function - Compatible with MS 240, MS 260, MS 260 C, MS 311, MS 362, MS 362 C, MS 391 - Fuel-resistant rubber composite for durability with modern petrol - Maintains stable air-fuel ratio for reliable performance - Direct replacement for carburettor service and maintenance |
| Fits Models | MS260, MS260C | MS240 | MS362, MS362C | MS311 | MS391 |
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