Husqvarna FS 520 Walk Behind Flat Saws are designed for making the job easier
NOTE: BLADE ON SAWS IN PICTURE ARE NOT INCLUDED : BLADES MUST BE PURCHASED SEPARATELY
Series of floor saws with engine options from 13 to 24 hp. The floor saws are developed with a clear focus on ergonomics and user friendliness, featuring many innovative solutions that make your job easier. Their unique transmission makes them ideal for more demanding jobs, despite their compact size.
Cutting depth, max"®7.7 in
Output power (As rated by the engine/motor manufacture) - 20.8 hp"® "®Blade diameter, max - 20 in
Adjustable handles
Provides a closer and more comfortable position to the cutting side for easier alignment and straighter cuts. Handle can also be folded for transport.
IntelliSeal
The patented IntelliSeal blade spindle has four sealed radial bearings for strength and durability. Allows for a minimum of 500 hour maintenance intervals and a 1000 hour limited warranty.
Low Vibrations
All of our small floorsaws have low vibrations. The FS 500- and 400-series has a engine and blade shaft mounting system that gives better cutting performance and also reduce vibrations. Along with the low-vibration handlebar this makes work less tiring for the operator during long shifts.
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Husqvarna FS 520 Walk Behind Flat Saws: Powerful, Reliable, and Built for Professional Concrete Cutting
The Husqvarna FS 520 Walk Behind Flat Saws belong to one of the most trusted families of concrete and asphalt cutting machines in the construction industry. Designed for professional contractors who require power, durability, and precision, the FS 520 series stands out as a high-performance solution for a wide range of cutting applications. Whether used on commercial job sites, municipal road repair projects, or industrial flooring installations, these saws deliver consistent, accurate cuts while maintaining ease of operation.
With advanced engineering, ergonomic design, and long-lasting reliability, the Husqvarna FS 520 has earned a strong reputation among contractors who need a dependable walk-behind saw for heavy-duty work. This guide explores everything that makes the FS 520 a top choice, from engine performance to blade capacity, structural strength, applications, and maintenance.
Overview of the Husqvarna FS 520 Walk Behind Flat Saws
The Husqvarna FS 520 is a mid-sized walk-behind flat saw specifically designed for cutting concrete and asphalt. It strikes a perfect balance between power and maneuverability—strong enough for demanding tasks but compact enough for easy transport and operation.
Key Characteristics of the FS 520:
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High-output gas engine
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Adjustable cutting depth
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Robust frame suitable for tough jobsite conditions
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Smooth and intuitive controls
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Efficient blade cooling system
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Excellent stability and line-cutting accuracy
The FS 520 is frequently used by contractors, road crews, concrete specialists, and industrial service teams.
Engine Power and Performance
At the heart of the FS 520 is a powerful gasoline engine engineered for long cutting sessions and consistent performance. Husqvarna equips this saw with a high-horsepower motor designed to deliver strong torque at various cutting depths.
Engine Performance Benefits
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Reliable torque delivery: Essential for cutting dense, reinforced concrete without bogging down.
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Optimized fuel efficiency: Allows longer cutting intervals between refueling, improving productivity.
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Heat-resistant design: Maintains performance during long work periods or under hot weather conditions.
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Smooth operation at full load: Prevents blade wobble or uneven cutting patterns.
The engine’s reliability is one of the biggest reasons the FS 520 is favored by professionals who need dependable power every day.
Blade Capacity and Cutting Depth
The Husqvarna FS 520 Walk Behind Flat Saws are built to accommodate large diamond blades, enabling deep and efficient cuts. The saw’s cutting depth depends on blade diameter, and its precise depth-control mechanism helps operators achieve accurate results.
Blade-Related Advantages
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Adjustable depth control with smooth mechanical operation
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Compatibility with premium concrete and asphalt blades
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Stable blade shaft for straight, vibration-free cutting
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Balanced weight distribution for improved downforce and cleaner cuts
Contractors appreciate the FS 520’s ability to deliver professional-grade cuts while maintaining stable blade performance.
Frame Strength and Durability
Husqvarna designs all of its flat saws with durability in mind, and the FS 520 is no exception. Heavy-duty materials and a well-structured chassis allow the machine to withstand the harshest cutting environments.
Durability Features
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A thick, welded steel frame
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Reinforced blade guard
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Industrial-grade wheels that withstand rough surfaces
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Strong handle assembly that minimizes vibration
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Corrosion-resistant components
The FS 520’s rugged construction ensures long-term use even in demanding commercial and industrial applications.
Operator Comfort and Ergonomics
Walk-behind saw operators often spend hours cutting long lines in concrete or asphalt. This is why the FS 520 is designed with ergonomics that minimize strain while maximizing precision.
Ergonomic Benefits
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Adjustable handlebars: Accommodate different operator heights and positions.
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Low-vibration design: Reduces fatigue and improves comfort.
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Intuitive controls: Allow operators to make quick adjustments without breaking workflow.
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Optimized center of gravity: Makes steering easier, even in tight spaces.
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Smooth push force: Reduces user strain during prolonged cutting.
These features help ensure that operators stay productive, comfortable, and in full control of the machine during operation.
Self-Propelled vs. Manual Versions
Some FS 520 models are available with self-propelled capabilities, while others rely on manual propulsion. Both options deliver excellent performance, but each suits different jobsite needs.
Manual FS 520
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Ideal for shorter cutting lines
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Provides greater operator control on small job sites
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Lightweight compared to powered versions
Self-Propelled FS 520
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Reduces operator fatigue over long cutting runs
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Maintains consistent travel speed
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Ensures clean, even cuts on large slabs and pavement projects
Contractors can choose the model that best fits their workflow and workload requirements.
Wet Cutting System
To maintain blade performance and reduce dust, the FS 520 features a water cooling system designed to manage heat buildup and extend blade life.
Wet Cutting Advantages
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Minimizes airborne dust
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Keeps the blade cool and sharp
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Improves cutting accuracy
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Reduces friction against the concrete
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Extends diamond blade lifespan
A reliable water delivery system is essential for professional-grade cutting, and Husqvarna executes it extremely well.
Applications of the Husqvarna FS 520 Walk Behind Flat Saws
The FS 520 is a versatile tool widely used across multiple industries. Its performance, durability, and control make it suitable for a wide range of cutting tasks.
1. Road Repair and Asphalt Cutting
The FS 520 is frequently used for:
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Asphalt patching
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Roadway trenching
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Pothole preparation
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Utility line installation
The saw’s power allows it to cut through dense asphalt quickly and cleanly.
2. Concrete Slab Cutting
Common in both residential and commercial environments:
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Parking structures
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Warehouses
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Sidewalks
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Driveways
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Structural foundations
Its deep-cutting ability helps contractors prepare slabs for demolition or expansion.
3. Expansion Joint Cutting
Precision is essential for creating long, straight expansion joints, and the FS 520 delivers consistently accurate line cuts.
4. Utility and Infrastructure Projects
Perfect for water mains, fiber-optic lines, and electrical conduit installations.
5. Controlled Demolition
Useful in situations where concrete must be removed in a controlled, segmented way.
Across these use cases, the FS 520 stands out for its consistent performance, clean line control, and durability.
Maintenance and Serviceability
Routine maintenance is important for keeping the FS 520 in top working condition. Fortunately, Husqvarna designs its saws with easy access to key components.
Key Maintenance Tasks
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Regular air filter cleaning or replacement
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Checking belts for wear
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Lubricating moving parts
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Monitoring engine oil levels
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Inspecting blade shaft bearings
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Keeping the machine clean of concrete dust buildup
Following these maintenance steps helps ensure longer machine life and reduces the likelihood of downtime.
Why Professionals Choose the Husqvarna FS 520
The Husqvarna FS 520 Walk Behind Flat Saws have gained a loyal following for several important reasons:
Reliability
Husqvarna’s engineering and build quality provide long-term trustworthiness.
Cutting Power
The machine’s torque and blade performance make it ideal for demanding concrete work.
Precision
Stable blade mechanics ensure straight, smooth cuts without deviation.
Durability
The rugged frame and construction allow daily use on rough job sites.
Versatility
Suitable for concrete, asphalt, structural work, utilities, and more.
Operator Comfort
A well-balanced, ergonomic design helps reduce fatigue.
The FS 520 is a machine that delivers consistent results, making it a valuable tool for contractors at every level.
Conclusion
The Husqvarna FS 520 Walk Behind Flat Saws combine power, durability, and precision to create a cutting machine that meets the demands of professional contractors. With a strong engine, excellent blade capacity, ergonomic controls, and rugged construction, the FS 520 is built to handle heavy workloads across concrete and asphalt cutting applications.
Whether you’re working on road repairs, expansion joints, industrial flooring, or demolition preparation, the FS 520 offers performance and reliability that contractors can count on. It remains one of the best walk-behind flat saws in its class—trusted, efficient, and engineered for real-world jobsite demands.