Description
Overview:
The Metering Diaphragm is a Genuine Stihl part for the carburettor fuel system on a range of handheld machines, including the SH 56 and SH 56 C vacuum shredders. Made from a fuel‐resistant elastomer composite with a flexible membrane, it controls fuel delivery in the metering chamber so the engine gets a consistent mixture across idle, acceleration and load. Correct metering prevents hard starting, bogging and poor throttle response. Identified by OEM No. 4241 121 4702, this diaphragm restores reliable running on compatible Stihl blowers, vacuum shredders, brushcutters, Kombi engines and more. It is a direct replacement for worn or stiff membranes and is suitable for routine service or repair when symptoms of starvation or flooding are present.
Key Features:
- Genuine Stihl part for assured fit and performance (OEM 4241 121 4702)
- Fuel‐resistant membrane for stable metering and smooth running
- Helps curing hard starting, hesitation and inconsistent idle
- Precision response to pump lever/needle for accurate fuel control
- Durable construction suited to regular use with modern fuels
- Direct replacement; no modification required
- Supports efficient fuel economy and emissions performance
- Compatible with a wide range of Stihl blowers, vacs and trimmers
- Useful to fit during carburettor overhaul or gasket/diaphragm service
Typical Applications:
Routine carburettor servicing, repair after storage with stale fuel, restoring throttle response and idle stability on Stihl blowers, vacuum shredders, brushcutters, edgers, pole pruners and Kombi powerheads used in garden maintenance, grounds care and light commercial work.
Also known as:
Metering diaphragm, carburettor diaphragm, carb diaphragm, fuel metering membrane, carburettor metering membrane, fuel pump diaphragm (carb), diaphragm membrane for carburettor repair kit.
Fits Models:
BG 50, BG 56, BG 56 C, BG 66, BG 66 C, BG 86, BG 86 C, BR 200, FC 56 C, FC 70 C, FS 230, FS 36, FS 38, FS 40, FS 40 C, FS 44, FS 45, FS 45 C, FS 45 L, FS 46, FS 46 C, FS 50, FS 50 C, FS 55, FS 55 C, FS 55 R, FS 56, FS 56 C, FS 56 R, FS 56 RC, FS 70 C, FS 70 R, FS 70 RC, HT 56 C, KM 56 C, KM 56 RC, SH 56, SH 56 C, SH 86, SH 86 C
Alternate Part Numbers:
4241-121-4702, 4241 121 4700, 42411214700, 42411214702
Product Specifications
| L&S Part No. | 4241 121 4702 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Stihl |
| OEM No. | 42411214702 |
| Unit of Sale | 1 |
| Machine Type | Blower/Shredders, Garden Vacuum, Brushcutters, Pole Pruners, Kombi Tools, Backpack Blowers |
| Fits Brands | Stihl |
| Key Features | - Genuine Stihl part, OEM No. 4241 121 4702 - Fuel-resistant elastomer composite membrane - Direct replacement; no modification needed - Compatible with Stihl blowers, vacs, trimmers - Restores reliable running and throttle response |
| Fits Models | FS36, FS40, FS44 | FS38, FS45, FS46 | FS40, FS50 | FS55, FS55C, FS55R | FS56, FS56C, FS56R | BG56 | BG66 | BG86 | BR200 | SH56, SH86 | BG50 | FS70C, FS70R, FS70RC | HT56 C | FS230 | KM56C, KM56RC |
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