Description
Overview:
This Genuine Husqvarna diaphragm is a thin, fuel‐resistant elastomer membrane for the carburettor, used to regulate and pump fuel so your machine starts reliably, idles cleanly, and delivers consistent power under load. It is engineered for professional chainsaws and power cutters, including the Husqvarna 394 XP and K1250, and is made to OEM tolerances for an accurate fit. The robust, flexible construction maintains its shape and responsiveness in typical petrol and two‐stroke oil environments, helping to keep mixture control stable across a wide range of operating conditions. Replacing a hardened, torn, or distorted diaphragm restores correct fuel metering and helps prevent lean running, bogging on acceleration, or poor hot starts. Genuine Part 503 11 73-01 provides dependable compatibility across the listed models.
Key Features:
- Genuine OEM Husqvarna part for assured compatibility and performance
- Fuel‐resistant elastomer construction for durability with modern petrol mixes
- Restores correct carburettor metering and pump action for smoother running
- Helps stabilise idle, throttle response, and hot and cold starting
- Accurate profile and mounting holes for straightforward installation
- Supports preventative maintenance, extending carburettor service life
- Reliable operation across typical jobsite temperatures and workloads
- Suitable for both chainsaws and cut‐off saws in the listed ranges
Typical Applications:
Ideal for carburettor overhauls during routine servicing, repairs after storage, or when diagnosing symptoms such as hard starting, poor idle, flat spots on acceleration, or loss of power under load. Commonly used by forestry professionals, landscapers, hire fleets, and trades who maintain Husqvarna chainsaws and power cutters.
Also known as:
Carburettor diaphragm, metering diaphragm, fuel pump diaphragm, carb metering membrane, carburettor membrane, carburettor pump membrane, carburettor sealing diaphragm.
Fits Models:
2077, 3120, 3120 XP, 3120K, 3120K EPA, 3120KEPA, 3120XP, 3122 K, 3122K, 394 XP, 394XP, K1250, K1250 Active, K1250 Rail, K1250Active, K1250Rail, K1260, K1260 Rail, K1260Rail
Alternate Part Numbers:
503 11 73-01, 503117301
Product Specifications
| L&S Part No. | 503 11 73 01 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Husqvarna |
| OEM No. | 503117301 |
| Unit of Sale | 1 |
| Machine Type | Chainsaws, Disc Cutters |
| Fits Brands | Husqvarna |
| Key Features | - Genuine OEM Husqvarna part ensures compatibility and performance - Fuel‐resistant elastomer construction for durability - Accurate profile and mounting holes for easy installation - Suitable for Husqvarna chainsaws and power cutters - Restores correct carburettor metering for smoother running |
| Fits Models | K1250 | K1260 | 3122K | K1250 Active | K1250 Rail | K1260 Rail | 3120 | 3120XP | 394XP | 3120K |
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