Description
Overview:
This Genuine Husqvarna Throttle Control is a direct replacement for selected 525‐series brushcutters and trimmers, including the 525L and 525LK. It is the hand‐operated control that manages engine speed, giving you smooth and accurate response from idle to full power. Built from durable, wear‐resistant polymer components designed for outdoor use, it restores reliable throttle action when the original control becomes worn or damaged. Correct throttle control helps maintain stable idle, clean acceleration and consistent cutting performance, which is essential for both everyday maintenance and tougher clearing. Engineered to match OEM specifications for fit and function, it installs in place of the original unit with no modifications, maintaining the intended ergonomics of the handle assembly. Genuine Husqvarna part for assured compatibility and long service life.
Key Features:
- Genuine Husqvarna part for accurate fit and dependable operation
- Precision throttle modulation for smooth idle and strong acceleration
- Robust polymer construction suited to vibration and outdoor conditions
- Designed to replace worn or damaged controls and restore performance
- Direct replacement on compatible 525‐series machines; no modifications required
- Supports consistent cutting speed for cleaner results and reduced engine bogging
- Helps protect the engine by enabling correct speed control under load
- Suitable for professional landscaping and regular domestic garden use
- OEM reference for easy identification and ordering: 578 86 43‐01 / 578864301
- Backed by Husqvarna's manufacturing standards for reliability
Typical Applications:
Restoring precise throttle response on Husqvarna 525‐series brushcutters used for edging, trimming lawns, clearing weeds, and tackling heavier growth such as coarse grass or light brush. Ideal for machines that show sticky throttle action, poor return to idle, or inconsistent power delivery, helping users maintain control and productivity on routine and intensive tasks.
Also known as:
Throttle trigger, throttle handle control, accelerator trigger, engine speed lever, rev control lever, trigger throttle, speed control handle.
Fits Models:
525L
525LK
525LS
525LST
525RJD
525RJX
525RK
525RS
525RX
525RXT
Alternate Part Numbers:
578 86 43-01, 578864301
Product Specifications
| L&S Part No. | 578 86 43 01 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Husqvarna |
| OEM No. | 578864301 |
| Unit of Sale | 1 |
| Applications | 525L, 525LK, 525LS, 525LST, 525RJD, 525RJX, 525RK, 525RS, 525RX, 525RXT |
| Machine Type | Brushcutters |
| Fits Brands | Husqvarna |
| Fits Models | 525L | 525LK | 525LS | 525LST | 525RJD | 525RJX | 525RK | 525RS | 525RX | 525RXT |
