Description
Overview:
This decompression valve is a non-genuine replacement part for Husqvarna petrol disc cutters, engineered to reduce cylinder pressure during starting. It helps the engine turn over more easily, improving cold and hot starts and reducing strain on the starter assembly and operator. Built with a robust metal body and a heat‐resistant sealing O‐ring, it is designed for reliable sealing and long service life in dusty, high‐vibration environments. The valve is made to replace OEM reference 503 71 53-01 and suits machines such as the Husqvarna K650 and K750. It features an M10 thread for straightforward installation and measures 37 mm in overall length. A practical maintenance part for keeping professional cut‐off saws running smoothly and consistently.
Key Features:
- Non-genuine replacement that matches the function of OEM 503 71 53-01
- Reduces engine compression to make pull-starting easier and more consistent
- Durable metal construction with sealing O-ring for secure, leak-resistant fit
- M10 thread and 37 mm length for simple screw-in installation
- Helps protect starter ropes and recoil units by lowering starting effort
- Stable performance in demanding, dusty jobsite conditions
- Suitable for routine servicing or to replace a failed or leaking original valve
- Compatible with the listed Husqvarna disc cutter models
Typical Applications:
Used on Husqvarna cut-off saws to restore easy starting when the original decompression valve has worn, seized, or begun to leak. Ideal during engine overhauls, scheduled maintenance, or when diagnosing hard-starting, kickback on pull-start, or loss of compression hold. Suitable for construction, road and utility cutting, demolition, and landscaping tasks where reliable daily starting is essential.
Also known as:
Decompressor, decompression plug, pressure relief valve, pressure release valve, engine decompression valve, cylinder decompressor, starting aid valve for two-stroke cut-off saws.
Fits Models:
K650
K650 Active
K650 MkII
K650 Super
K750
K760
Alternate Part Numbers:
503 71 53-01, E6011
Product Specifications
| L&S Part No. | 650 037 |
|---|---|
| Unit of Sale | 1 |
| Applications | K650, K650 Active, K650 MkII, K650 Super, K650Active, K650MkII, K650Super, K750, K760, MARKII, Mark II |
| Machine Type | Disc Cutters |
| Fits Brands | Husqvarna |
| Fits Models | K750 | K650 Super, Mark II | K760 |
