Description
Overview:
Engine Stop Switch for Husqvarna disc cutters, designed to give fast, reliable engine shutdown under all site conditions. This Genuine Husqvarna part (MPN 506 31 86-04 / 506318604) features a durable polymer body with a positive-action red actuator in a black housing for clear, confident operation. It integrates directly with the OEM wiring on machines such as the Husqvarna K750 and K950, restoring safe stop control if your original switch is worn, damaged, or intermittent. Built for heavy use on construction and demolition jobs, it helps prevent accidental run-on and gives the operator immediate control of the powerhead. Suitable for a wide range of Husqvarna petrol disc cutters, it supports dependable day-to-day use with consistent feel and long service life.
Key Features:
- Genuine Husqvarna OEM part for assured fit and compatibility
- Direct replacement for MPN 506 31 86-04 (506318604) with correct switch geometry
- Quick, decisive engine shutdown for safer operation
- Robust polymer construction suited to dusty and wet on-site environments
- Clear red actuator for easy identification with gloves on
- Seamless integration with OEM harness; no modification required when replacing like-for-like
- Reliable contacts for consistent switching and reduced false trips
- Helps cure non-start/constant-run issues caused by faulty stop switches
- Supports routine maintenance to keep machines compliant and controllable
- Suitable for professional and DIY use across a wide cutter fleet
Typical Applications:
Used on Husqvarna petrol disc cutters across construction, groundworks, utilities, rail, rescue, and demolition tasks. Provides a dependable way to cut ignition immediately during concrete, stone, asphalt, or metal cutting, maintenance checks, and fault diagnosis. Ideal when refurbishing handles or replacing damaged controls.
Also known as:
Kill switch, stop button, emergency stop, engine cut-out switch, ignition cut-off, on/off rocker switch, power-off switch.
Fits Models:
3122K, K1250, K1250 Active, K1250 Rail, K1250Active, K1250Rail, K1260, K1260 Rail, K1260RAIL, K1270 I, K1270 II, K1270 Rail I, K1270 Rail II, K1270I, K1270II, K1270RailI, K1270RailII, 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, K950, K950 Rescue, K950 Ring, K960, K960 Rescue, K960 Ring, K960Rescue, K960Ring, K970, K970 Chain III, K970 III, K970 Rescue III, K970 Ring, K970 Ring III, K970ChainIII, K970III, K970RescueIII, K970Ring, K970RingIII
Alternate Part Numbers:
506 31 86-01, 506 31 86-04, 506 31 86-02, 506318602, 506318604, 506318601
Product Specifications
| L&S Part No. | 506 31 86 04 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Husqvarna |
| OEM No. | 506318604 |
| Unit of Sale | 1 |
| Applications | 3122K, K1250, K1250 Active, K1250 Rail, K1250Active, K1250Rail, K1260, K1260 Rail, K1260RAIL, K1270 I, K1270 II, K1270 Rail I, K1270 Rail II, K1270I, K1270II, K1270RailI, K1270RailII, 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, K950, K950 Rescue, K950 Ring, K960, K960 Rescue, K960 Ring, K960Rescue, K960Ring, K970, K970 Chain III, K970 III, K970 Rescue III, K970 Ring, K970 Ring III, K970ChainIII, K970III, K970RescueIII, K970Ring, K970RingIII |
| Machine Type | Disc Cutters |
| Fits Brands | Husqvarna |
| Fits Models | K750 | K950 | K1250 | K760 | K1260 | K970 | 3122K | K1250 Active | K1250 Rail | K1260 Rail | K760 Cut-n-Break | K760 RESCUE | K950 Rescue | K950 Ring | K960 | K960 Rescue | K960 Ring | K970 Ring | K970 Chain III | K970 Chain III (2 Bolt) | K1270 I | K1270 II | K1270 II Smartguard | K1270 Rail I | K1270 Rail II | K760 Cut-n-Break II | K760 II | K770 Dry Cut | K770 OilGuard | K770 Rescue | K770 SmartGuard | K770 VAC | K970 Rescue III | K970 Ring III | K970 SmartGuard | K970 III |
