Description
Overview:
This Genuine Husqvarna carburettor diaphragm kit is a service part for small two‐stroke chainsaws, restoring correct fuel metering and pump action in the carburettor. Built from fuel‐resistant elastomer and gasket materials, it replaces hardened or perforated diaphragms that cause hard starting, poor idle, or stalling under load. Designed for the Husqvarna 435 and commonly used on related platforms such as the 135, it helps maintain reliable running and clean acceleration after long use or storage. Supplied to the original specification under MPN 504 02 86 01 (also noted as 504028601), this genuine kit supports accurate fit and function, helping keep your saw working efficiently with minimal downtime.
Key Features:
- Genuine Husqvarna part for correct fit and performance (MPN 504 02 86 01 / 504028601)
- Replaces worn carburettor diaphragms to restore stable idle, pickup, and fuel delivery
- Fuel‐resistant materials suited to modern pump petrol blends
- Helps cure symptoms such as surging, flooding, and inconsistent tuning
- Made to OEM tolerances for the Husqvarna 435 platform and related models
- Supports easier starting and smoother running after storage or heavy use
- Straightforward installation with standard small‐engine tools
- Cost‐effective preventative maintenance to extend carburettor service life
- Suitable for professional users, grounds teams, and DIY owners
- Reduces time spent on repeated tuning by renewing key wear components
Typical Applications:
Routine carburettor servicing on chainsaws that are hard to start, won't hold tune, bog on throttle, or have been stored with fuel. Ideal after diaphragm ageing, ethanol‐related stiffening, or when rebuilding the carburettor during a full saw service to restore dependable performance in cutting, logging, pruning, and site work.
Also known as:
Carburettor diaphragm kit, carb kit, carb repair kit, metering diaphragm set, pump diaphragm set, diaphragm and gasket set, carb service kit for Husqvarna 435 series.
Fits Models:
135, 135E, 140E, 435, 435E, 435EII, 435II, 440E, 440EII, 440II
Product Specifications
| L&S Part No. | 504 02 86 01 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Husqvarna |
| OEM No. | 504028601 |
| Unit of Sale | 1 |
| Applications | 135, 135E, 140E, 435, 435E, 435EII, 435II, 440E, 440EII, 440II |
| Machine Type | Chainsaws |
| Fits Brands | Husqvarna |
| Fits Models | 135 | 135E | 140E | 435 | 435E | 435EII | 435II | 440E | 440EII | 440II |
