Description
Overview:
This genuine Stihl metering diaphragm is a small, flexible membrane used inside the carburettor of backpack leaf blowers to control fuel flow with precision. Made from a fuel‐resistant elastomer designed to hold its shape against petrol and ethanol blends, it helps keep the engine stable at idle and responsive under load. It is intended for Stihl blower models such as the BR500 and BR600, where accurate metering is essential for easy starting, smooth acceleration, and consistent power. Over time, diaphragms can harden or warp, leading to poor running. Replacing the metering diaphragm restores correct carburettor function and helps prevent flooding, lean running, or hesitation. This is a Genuine Stihl part engineered for a correct fit and reliable operation in demanding outdoor use.
Key Features:
- Genuine Stihl part for correct fit and dependable performance
- Maintains precise fuel metering for smooth starting, idling, and acceleration
- Fuel‐resistant material suitable for modern pump petrol including E10
- Helps stabilise engine speed under varying loads
- Can reduce symptoms such as bogging, surging, or hard starting when the old diaphragm has aged
- Durable construction designed for regular professional and domestic use
- Simple to fit during routine carburettor maintenance with basic tools
- Supports efficient fuel use by keeping mixture control consistent
- Compatible with multiple Stihl backpack blower models
- Suitable as a like‐for‐like replacement without modification
Typical Applications:
Used during service or repair of Stihl backpack leaf blowers to restore accurate carburettor fuel control. Ideal when engines are hard to start, won't hold tune, or exhibit uneven running after storage. Common for scheduled maintenance in landscaping, groundskeeping, facility management, and domestic garden care where reliable blower performance is required.
Also known as:
Carburettor metering diaphragm, carb diaphragm, metering membrane, carburettor membrane, blower carb diaphragm, fuel metering diaphragm, carb service diaphragm, diaphragm for blower carb.
Fits Models:
BR430, BR450, BR450C, BR500, BR550, BR600, BR700
Alternate Part Numbers:
4180-121-4701, 41801214701
Product Specifications
| L&S Part No. | 4180 121 4701 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Stihl |
| OEM No. | 41801214701 |
| Unit of Sale | 1 |
| Machine Type | Backpack Blowers |
| Fits Brands | Stihl |
| Key Features | - Genuine Stihl part ensures correct fit and performance - Compatible with Stihl BR430, BR450, BR500, BR600, BR700 - Fuel-resistant elastomer for petrol and ethanol blends - Maintains precise fuel metering for smooth operation - Simple installation during routine carburettor maintenance |
| Fits Models | BR500 | BR430 | BR450, BR450C | BR550 | BR600 |
