The 580BTS is the most powerful machine in this guide, with a 75.6cc X-Torq engine rated at 4.59 HP, and a listed 1000 CFM at 220 MPH. The blowing force figure of 47 newtons is a measure of thrust and is the number that best describes how hard it can move wet leaves and compacted debris. The X-Torq name refers to Husqvarna's low-emission two-stroke design.
The harness is ventilated and has a padded hip belt that carries weight on your hips, which is what makes a backpack comfortable for an hour of work. Compared with the 360BT at 890 CFM and 30 N, it adds more airflow and a good deal more force. That makes it a professional-grade tool, and it is more machine than most homes need.
Ownership is the usual gas routine: mixed fuel at the manual's ratio, a clean air filter and an empty tank before winter storage. The engine needs a dealer service from time to time. It is best bought by anyone with a large property or a landscaping business who needs real force and long sessions.
What works
- 1000 CFM and 47 N of blowing force
- Ventilated harness and padded hip belt
- 75.6cc X-Torq two-stroke engine
- Built for long working days
Watch out for
- Heavy and loud like any big two-stroke
- Costly and more than most homes need
Spec sheet
- Engine
- 75.6cc two-stroke, 4.59 HP
- Airflow
- 1000 CFM
- Air speed
- 220 MPH
- Blowing force
- 47 N
- Form
- Backpack






