Description
Overview:
This genuine Husqvarna flywheel is a key engine component for selected handheld machines in the 525-series, including the 525L and 525RX brushcutters. Made from durable metal with a natural aluminium finish, it combines a lightweight, rigid body with embedded magnets and cooling fins to stabilise crankshaft speed, drive airflow over the cylinder, and provide consistent ignition timing. Replacing a worn, cracked, or damaged flywheel restores smooth running, reliable starting, and stable idle. Designed for an exact OEM fit and balance, it is supplied under Husqvarna part numbers 578 96 78-01 and 578967801. Built for regular professional or domestic use, it helps keep your machine efficient and reduces vibration and stress on connected parts.
Key Features:
- Genuine Husqvarna OEM part for assured compatibility and performance
- Robust die-cast metal construction for strength and long service life
- Integrated cooling fins to maintain steady airflow and engine temperature
- Magnet rotor ensures reliable ignition signal and spark consistency
- Precisely balanced to reduce vibration and improve throttle response
- Direct replacement for the original flywheel; no modifications required
- Supports smooth idling and efficient power delivery under load
- Helps prevent premature wear of related engine components through stable rotation
- Suitable for frequent use in landscaping, grounds care, and site maintenance
Typical Applications:
Used to replace a damaged, cracked, or worn flywheel on Husqvarna 525-series machines to restore steady engine operation, cooling airflow, and dependable ignition. Common during scheduled overhauls, after impact or a starter recoil jam, or when diagnosing weak spark, poor idle, or inconsistent acceleration on brushcutters, trimmers, hedge trimmers, and pole saws.
Also known as:
Engine flywheel, magneto flywheel, rotor, ignition rotor, fan flywheel, cooling fan wheel, crankshaft flywheel.
Fits Models:
325HE3, 325HE4, 524 L, 524L, 525 LS Mark II, 525 LST Mark II, 525HE3, 525HE4, 525HF3S, 525L, 525LK, 525LS, 525LS Mark II, 525LST, 525LST Mark II, 525P4S, 525P5S, 525PT5S, 525RJD, 525RJX, 525RK, 525RS, 525RX, 525RX Mark II, 525RXT, 525RXT Mark II, 525RXTMarkII
Alternate Part Numbers:
578 96 78-01, 578967801
Product Specifications
| L&S Part No. | 578 96 78 01 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Husqvarna |
| OEM No. | 578967801 |
| Unit of Sale | 1 |
| Applications | 325HE3, 325HE4, 524 L, 524L, 525 LS Mark II, 525 LST Mark II, 525HE3, 525HE4, 525HF3S, 525L, 525LK, 525LS, 525LS Mark II, 525LST, 525LST Mark II, 525P4S, 525P5S, 525PT5S, 525RJD, 525RJX, 525RK, 525RS, 525RX, 525RX Mark II, 525RXT, 525RXT Mark II, 525RXTMarkII |
| Machine Type | Brushcutters |
| Fits Brands | Husqvarna |
| Fits Models | 325HE3 | 325HE4 | 525HF3S | 525P4S | 525P5S | 525PT5S | 525L | 525LK | 525LS | 525LST | 525RJD | 525RJX | 525RK | 525RS | 525RX | 525RXT | 524 L | 525HE3 | 525HE4 | 525 LS Mark II | 525 LST Mark II | 525RX Mark II | 525RXT Mark II |
