Description
Overview:
This metering diaphragm is a Genuine Stihl part for the carburettor on Stihl petrol hedgetrimmers, including HS 46 C-E and HS 56 C-E. It is a thin, fuel‐resistant membrane that controls the metering of fuel inside the carburettor, helping to keep the mixture correct so the engine starts easily, idles steadily and accelerates cleanly. Made from durable elastomer with fabric reinforcement and a small metal centre button, it is designed to cope with petrol and regular vibration in service. Supplied to original equipment specification under OEM No. 4242 121 4702 (MPN 42421214702), it is a direct replacement for a worn or stiff diaphragm and restores consistent performance in everyday trimming work.
Key Features:
- Genuine Stihl part for assured compatibility and performance
- OEM specification: 4242 121 4702 / 42421214702
- Fuel‐resistant, fabric‐reinforced membrane for long service life
- Maintains precise fuel metering for smooth idle and clean pick‐up
- Helps cure hard starting, erratic running and poor acceleration linked to metering faults
- Direct replacement that fits in the original carburettor cover stack
- Stable operation across typical garden and site temperatures
- Suitable for routine carburettor servicing to prevent premature wear
- Supports reliable trimming with reduced downtime
Typical Applications:
Used during carburettor maintenance on Stihl hedgetrimmers when the engine is hard to start, idles unevenly, bogs on throttle, or has inconsistent power. Ideal as part of a periodic service to replace aged or fuel‐hardened diaphragms and restore correct fuelling for regular domestic, commercial landscaping and grounds maintenance work.
Also known as:
Carburettor metering diaphragm, metering membrane, carb diaphragm, hedge trimmer carb diaphragm, fuel metering membrane, carburettor membrane for hedgetrimmer.
Fits Models:
HS 46, HS 46 C-E, HS 56 C-E, HS46, HS46 C, HS46C, HS46C-E, HS46CE, HS56, HS56C-E, HS56CE
Alternate Part Numbers:
4242 121 4701, 4242-121-4702, 42421214702, 42421214701
Product Specifications
| L&S Part No. | 4242 121 4702 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Stihl |
| OEM No. | 42421214702 |
| Unit of Sale | 1 |
| Machine Type | Hedgetrimmers |
| Fits Brands | Stihl |
| Key Features | - Genuine Stihl part ensures compatibility with specified models - OEM specification: 4242 121 4702 - Fuel-resistant, fabric-reinforced membrane for durability - Direct replacement fits original carburettor cover stack - Suitable for HS 46 C-E and HS 56 C-E models |
| Fits Models | HS 46, HS46 C | HS56 |
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