Description
Overview:
This genuine Husqvarna decompression valve is a screw-in replacement for easing pull-start effort on petrol engines used in heavy-duty cutting equipment. Built with a robust metal body and a durable sealing O-ring, it vents cylinder pressure during starting, reducing strain on the recoil starter and helping the engine fire more easily. It is designed for Husqvarna disc cutters and professional chainsaws, including the K750 and K760, and is suitable for routine maintenance or restoring starting performance on tired engines. Supplied to Husqvarna specification under OEM number 503 71 53 01 (MPN 503715301), it supports reliable, repeatable starting and helps protect starter cords and starter mechanisms from excessive load. Colour: metallic silver with black seal. Brand: Husqvarna. Genuine Part.
Key Features:
- Genuine Husqvarna part for assured fit and performance (OEM 503 71 53 01 / 503715301).
- Reduces cylinder compression to make cold and hot starts easier.
- Helps extend the life of recoil starters and pull cords by lowering starting load.
- Sturdy metal construction with quality sealing O-ring for reliable, leak-free operation.
- Simple screw-in design; straightforward to replace during routine servicing.
- Suitable for a wide range of Husqvarna disc cutters and chainsaws used on site and in workshops.
- Consistent venting action supports smoother starts and stable idle after start-up.
- Built to cope with tough environments typical of cutting and forestry work.
Typical Applications:
Used on Husqvarna disc cutters and chainsaws to ease manual starting, especially where frequent stop-start work, cold weather, or high-compression engines make pull-starting difficult. Common in construction cutting, rescue saws, demolition, forestry felling, and firewood processing where dependable restarts save time and reduce operator fatigue.
Also known as:
Decomp valve, decompressor, pressure relief valve, pressure release valve, cylinder decompression valve, engine decompression valve, starter assist valve.
Fits Models:
254, 257, 261, 262XP, 268, 268K, 272K, 272XP, 281, 288, 288XP, 357XP, 359, 362, 362XP, 365, 365H, 371K, 371KDIS, 371XP, 372XP, 375K, 385, 385XP, 390XP, 394XP, 395XP, K650 ACTIVE, K650 Cut-n-Break, K650ACTIVE, K650CUT-N-BREAK, K750, K760, K760 Cut-n-Break, K760 Cut-n-Break II, K760 II, K760 Rescue, K760CUT-N-BREAK, K760Cut-n-BreakII, K760II, K760Rescue, K770, K770 Dry Cut, K770 OilGuard, K770 Rescue, K770 VAC, K770DryCut, K770OilGuard, K770Rescue, K770VAC
Alternate Part Numbers:
503715301
Product Specifications
| L&S Part No. | 503 71 53 01 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Husqvarna |
| OEM No. | 503715301 |
| Unit of Sale | 1 |
| Applications | 254, 257, 261, 262XP, 268, 268K, 272K, 272XP, 281, 288, 288XP, 357XP, 359, 362, 362XP, 365, 365H, 371K, 371KDIS, 371XP, 372XP, 375K, 385, 385XP, 390XP, 394XP, 395XP, K650 ACTIVE, K650 Cut-n-Break, K650ACTIVE, K650CUT-N-BREAK, K750, K760, K760 Cut-n-Break, K760 Cut-n-Break II, K760 II, K760 Rescue, K760CUT-N-BREAK, K760Cut-n-BreakII, K760II, K760Rescue, K770, K770 Dry Cut, K770 OilGuard, K770 Rescue, K770 VAC, K770DryCut, K770OilGuard, K770Rescue, K770VAC |
| Machine Type | Disc Cutters, Brushcutters |
| Fits Brands | Husqvarna |
| Fits Models | K750 | K760 | K770 | K650 Cut-n-Break | K760 Cut-n-Break | K760 RESCUE | 254 | 257 | 261 | 262XP | 268 | 281 | 288 | 288XP | 357XP | 359 | 362 | 362XP | 365 | 365H | 371XP | 372XP | 385 | 385XP | 390XP | 394XP | 395XP | 268K | 272K | 371K | K760 Cut-n-Break II | K760 II | K770 Dry Cut | K770 OilGuard | K770 Rescue | K770 SmartGuard | K770 VAC | 375K |
