Husqvarna FS400: Professional Walk-Behind Floor Saw for Concrete and Asphalt Cutting

The Husqvarna FS400 is a professional walk-behind floor saw designed for precise, reliable cutting of concrete and asphalt surfaces. Known for its durability, straight-line accuracy, and ease of operation, the FS400 is widely used by contractors, municipalities, and maintenance crews who need consistent results on slabs, pavements, and repair projects.

Built by Husqvarna, the FS400 reflects decades of engineering experience in concrete cutting equipment and diamond tool systems. It is engineered for daily jobsite use where performance, control, and longevity are essential.

What Is the Husqvarna FS400?

The Husqvarna FS400 is a compact walk-behind floor saw optimized for flat, horizontal cutting applications. It is commonly used for surface cuts rather than deep structural cutting, making it ideal for expansion joints, pavement repair, and general maintenance work.

Typical uses include:

• Concrete slab cutting

• Expansion and control joints

• Asphalt and pavement repair

• Sidewalk and driveway cutting

• Utility access cuts

The FS400 offers professional-grade performance in a manageable size, making it a popular choice for contractors who need precision without the bulk of larger floor saws.

Design and Construction

Compact and Well-Balanced Frame

One of the defining characteristics of the Husqvarna FS400 is its balanced chassis. The saw is designed to distribute weight evenly over the blade, which helps:

• Maintain straight tracking

• Reduce blade drift

• Improve cut accuracy

• Minimize operator effort

This balance is especially important when cutting long, straight joints that must remain consistent from start to finish.

Durable Jobsite Build

The FS400 is built to withstand harsh cutting environments. Its rugged frame, protective blade guard, and corrosion-resistant components are designed to handle:

• Water and slurry from wet cutting

• Abrasive concrete dust

• Repeated transport between jobsites

This durability makes it suitable for both short-term projects and long-term daily use.

Cutting Performance and Capacity

Concrete Cutting Applications

The Husqvarna FS400 is widely used for cutting cured and reinforced concrete in:

• Residential slabs

• Commercial floors

• Sidewalk panels

• Garage and warehouse floors

When paired with the correct concrete diamond blade, the FS400 delivers clean edges and consistent cutting depth, even across varying concrete mixes.

Asphalt Cutting Applications

Asphalt is highly abrasive and requires stable blade control. The FS400 performs effectively in:

• Road and pavement repair

• Parking lot maintenance

• Driveway resurfacing

• Utility trench access

Using an asphalt-specific diamond blade allows faster cutting and helps extend blade life.

Precision Depth Control

Accurate depth control is critical for professional results. The Husqvarna FS400 features a smooth depth adjustment system that allows operators to:

• Set precise cutting depths

• Maintain uniform joint depth

• Make incremental adjustments during operation

This precision is especially valuable when cutting expansion and control joints, where consistency helps manage cracking and slab movement.

Ergonomics and Operator Comfort

User-Friendly Handle Design

The FS400 is designed with operator comfort in mind. Its handle system provides:

• Comfortable grip and steering control

• Natural operating posture

• Improved maneuverability

This ergonomic design helps reduce fatigue during extended cutting sessions.

Stable, Low-Effort Operation

Thanks to its balanced design, the FS400 requires less physical effort to guide compared to heavier or poorly balanced saws. This stability improves accuracy and reduces strain on the operator.

Wet Cutting System

The Husqvarna FS400 is designed primarily for wet cutting, which is the preferred method for both concrete and asphalt.

Benefits of wet cutting include:

• Effective dust suppression

• Blade cooling to prevent overheating

• Longer diamond blade life

• Cleaner, smoother cuts

Wet cutting also helps contractors comply with silica dust regulations and improves overall jobsite safety.

Typical Applications for the Husqvarna FS400

Expansion and Control Joint Cutting

One of the most common uses of the FS400 is cutting expansion and control joints in concrete slabs. The saw’s straight-line stability and depth accuracy make it ideal for creating uniform joints.

Sidewalks, Curbs, and Driveways

Municipal crews and residential contractors rely on the FS400 for:

• Sidewalk panel replacement

• Curb repairs

• Driveway cutting and removal

Its compact size allows precise work without damaging surrounding surfaces.

Pavement and Asphalt Repair

For light-to-medium pavement repair, the FS400 provides the control needed for clean access cuts and patch boundaries.

Utility and Maintenance Work

Utility contractors use the FS400 to create access points for:

• Pipes and conduits

• Electrical and communication lines

• Surface maintenance and repairs

Its portability allows quick deployment and efficient operation.

Diamond Blade Selection for the FS400

Choosing the right blade is essential for performance and longevity.

Concrete Diamond Blades

For concrete cutting, select blades designed for:

• Concrete hardness

• Aggregate type

• Reinforcement content

These blades provide optimized bond strength and segment design for consistent cutting.

Asphalt Diamond Blades

Asphalt blades typically feature:

• Softer metal bonds

• Wider gullets

• Enhanced debris removal

These features are critical for cutting abrasive asphalt efficiently.

Blade Compatibility and Safety

Always ensure:

• Blade diameter matches FS400 specifications

• Blade RPM rating meets or exceeds saw operating speed

Proper blade selection ensures safe and efficient operation.

Why Contractors Choose the Husqvarna FS400

Reliable Professional Performance

The FS400 is trusted by professionals for its consistent cutting results and dependable operation across a wide range of materials.

Easy Transport and Storage

Its compact footprint makes it easy to:

• Load into trucks or trailers

• Move between jobsites

• Store in limited space

This is especially valuable for mobile crews and service contractors.

Precision Without Excessive Size

While larger floor saws offer deeper cutting capacity, the FS400 provides the precision most surface-cutting jobs require without unnecessary bulk.

Maintenance and Long-Term Care

Routine maintenance helps keep the FS400 operating at peak performance.

Recommended practices include:

• Cleaning slurry and debris after each use

• Inspecting the water delivery system

• Checking blade condition and mounting hardware

• Verifying fasteners and moving parts

• Storing the saw in a dry, protected environment

Proper care extends service life and reduces downtime.

Safety Considerations

Operating the Husqvarna FS400 requires standard concrete cutting safety practices.

Operators should always use:

• Eye protection

• Hearing protection

• Respiratory protection when required

• Gloves with good grip

• Steel-toe footwear

Ensure blade guards and water systems are properly installed before operation.

Husqvarna FS400 vs Larger Floor Saws

The FS400 excels in situations where:

• Space is limited

• Precision is more important than maximum depth

• Cuts are shallow to medium depth

• Portability is a priority

For many contractors, it fills the gap between handheld saws and heavy-duty walk-behind models.

Who Uses the Husqvarna FS400?

The FS400 is commonly used by:

• Concrete contractors

• Asphalt repair crews

• Municipal maintenance teams

• Utility contractors

• Property maintenance professionals

Its versatility makes it suitable for both specialized and general cutting tasks.

FAQs About Husqvarna FS400

What is the Husqvarna FS400 used for?
It is used for cutting concrete and asphalt on flat surfaces such as slabs, sidewalks, and pavements.

Is the Husqvarna FS400 a walk-behind saw?
Yes. It is a compact walk-behind floor saw designed for straight horizontal cuts.

Can the FS400 cut asphalt?
Yes. With an asphalt-specific diamond blade, it performs well on pavement and asphalt.

Does the FS400 support wet cutting?
Yes. It is designed for wet cutting with an integrated water system.

What type of projects is the FS400 best suited for?
It is ideal for residential, light commercial, municipal, and maintenance projects.

Is the FS400 easy to transport?
Yes. Its compact design allows easy loading, transport, and storage.

What blades can be used with the FS400?
It supports a range of concrete and asphalt diamond blades within its size specifications.

Is the FS400 designed for professional use?
Yes. It is built specifically for professional contractors and jobsite conditions.

How accurate are cuts made with the FS400?
The saw offers excellent straight-line tracking and precise depth control.

How long does the Husqvarna FS400 last?
With proper maintenance, it can deliver many years of reliable professional service.

Final Thoughts on the Husqvarna FS400

The Husqvarna FS400 is a dependable, precision-focused walk-behind saw built for professional concrete and asphalt cutting. Its balanced design, durable construction, and user-friendly controls make it an excellent choice for contractors who need accuracy, portability, and consistent performance. Whether used for expansion joints, pavement repair, or routine maintenance work, the FS400 delivers clean cuts, efficient operation, and long-term value on demanding jobsites.