Description
Overview:
The Spark Plug HQT-2 Resistor (Husqvarna part no. 590 71 01 01) is a genuine OEM component for Husqvarna handheld petrol machines. It uses a robust steel shell and a glazed ceramic insulator to withstand vibration and heat in 2‐stroke engines. The built‐in resistor helps stabilise ignition performance and reduces electrical noise. This plug ignites the fuel-air mix for reliable starting, smooth running, and consistent power under load. It is a direct-fit choice for selected brushcutters and hedge trimmers, including the 321R and 525 LS Mark II, providing the correct reach and sealing for the specified engines. Choose this genuine part to maintain factory performance, reduce misfires, and support long service intervals when used with clean fuel and a correctly maintained air filter.
Key Features:
- Genuine Husqvarna OEM spark plug for assured compatibility and fitment (590 71 01 01)
- Built‐in resistor to improve ignition stability and reduce radio frequency interference (RFI)
- Durable construction with a tough ceramic insulator for heat resistance and reliability
- Supports easy starting, smooth idle, and consistent acceleration in 2‐stroke applications
- Designed to work with Husqvarna electronic ignition systems on listed models
- Helps reduce misfires and fouling when serviced at recommended intervals
- Direct replacement for the factory‐fitted plug on compatible machines
- Suitable for professional and domestic use in demanding environments
- Backed by OEM build standards for longevity and dependable performance
- Simple to fit with basic hand tools; remove old plug, check lead and boot, and refit
Typical Applications:
Routine servicing and repair of Husqvarna petrol brushcutters, trimmers, and hedge trimmers. Ideal for restoring reliable cold and hot starts, stabilising idle, and maintaining engine efficiency during grass cutting, edging, and hedge maintenance. Used in preventative maintenance schedules to keep machines performing consistently across a full working day.
Also known as:
Ignition plug, resistor spark plug, engine spark plug, suppressor plug, HQT‐2 plug, spark igniter, OEM spark plug for small 2‐stroke engines.
Fits Models:
321R, 321RJ, 525 LS Mark II, 525 LST Mark II, 525HE3, 525HE4, 525LS Mark II, 525RX Mark II, 525RXT Mark II
Alternate Part Numbers:
590710101
Product Specifications
| L&S Part No. | 590 71 01 01 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Husqvarna |
| OEM No. | 590710101 |
| Unit of Sale | 1 |
| Applications | 321R, 321RJ, 525 LS Mark II, 525 LST Mark II, 525HE3, 525HE4, 525LS Mark II, 525LST Mark II, 525RX Mark II, 525RXT Mark II, 525RXTMarkII |
| Machine Type | Brushcutters, Long Reach Hedgetrimmers |
| Fits Brands | Husqvarna |
| Fits Models | 525HE3 | 525HE4 | 525 LS Mark II | 525 LST Mark II | 525RX Mark II | 525RXT Mark II | 321R | 321RJ |
