Description
Overview:
This Genuine Husqvarna stop switch (OEM) is a safety-critical electrical control for Husqvarna petrol chainsaws, including models such as 136 and 137. Built with a tough moulded plastic body and dependable metal contacts, it provides a quick, positive way to shut down the engine by grounding the ignition circuit. Designed to integrate cleanly with the saw's existing wiring, it restores reliable stop function where the original switch has worn or failed. The compact push-button design suits the handle/top cover layout found on many Husqvarna saws, ensuring familiar operation and consistent performance in workshop or site conditions. Genuine part quality supports long service life, making it a practical replacement to maintain safe, controlled operation of your chainsaw.
Key Features:
- Genuine Husqvarna OEM part for assured fit and performance
- Positive, momentary push-button action for fast engine shutdown
- Durable plastic housing with corrosion-resistant metal contacts
- Engine stop by grounding the ignition circuit for reliable cut-out
- Compatible with a wide range of Husqvarna chainsaws (see list)
- Helps prevent run-on and improves operational safety
- Straightforward replacement using existing wiring/connectors
- Stable electrical contact design for consistent switching
- Suitable for professional, trade, and domestic users
- Replaces worn or damaged stop controls to restore functionality
Typical Applications:
Used to stop the engine instantly during felling, snedding, cross-cutting, storm clean-up, and firewood processing. Ideal for routine maintenance shut-off, rapid response in a bind or kickback situation, and secure shutdown before transport or storage. Keeps the saw controllable and safe in everyday and demanding site work.
Also known as:
Kill switch, stop button, engine cut-out switch, emergency stop, on/off switch, ignition shorting switch, power-off switch.
Fits Models:
136, 136LE, 137, 137E, 141, 141LE, 142, 142E, 242, 246, 254, 257, 261, 262XP, 266, 268, 268K, 272K, 281, 281XP, 288, 288XP, 3120, 3120XP, 394XP, 395XP, 42, 51, 55, 55 Rancher, 61, 66
Alternate Part Numbers:
503 71 79-01, 503717901
Product Specifications
| L&S Part No. | 503 71 79 01 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Husqvarna |
| OEM No. | 503717901 |
| Unit of Sale | 1 |
| Applications | 136, 136LE, 137, 137E, 141, 141LE, 142, 142E, 242, 246, 254, 257, 261, 262XP, 266, 268, 268K, 272K, 281, 281XP, 288, 288XP, 3120, 3120XP, 394XP, 395XP, 42, 51, 55, 55 Rancher, 61, 66 |
| Machine Type | Chainsaws |
| Fits Brands | Husqvarna |
| Fits Models | 136 | 136LE | 137E | 141 | 141LE | 142 | 142E | 242 | 246 | 254 | 257 | 261 | 262XP | 266 | 268 | 281 | 281XP | 288 | 288XP | 3120 | 3120XP | 394XP | 395XP | 42 | 51 | 55 | 55 RANCHER | 61 | 66 | 268K | 272K |
