FSA 400 Cordless Clearing Saw
SKU: Stihl | FS-FA09 200 0000
FSA 400 Cordless Clearing Saw
- required
required
AP 300S Battery
AP 500 S Battery
AL 301 Quick Hi-Speed Battery Charger
AL 301-4 Hi-speed Multi Battery Charger
AL 501 Hi-Speed Battery Charger
AP Battery System Carrier
Battery Carry Bag
Battery Box Systainer System
FS 3 Protect Brushcutter Trousers
Worker S3 Laced Safety Boots
Advance X-Vent Jacket
- Regular price
- £618.00 Ex VAT
- £741.60 Inc VAT
- RRP: £724.17 Ex VAT
- Sale price
- £618.00 £618.00 Ex VAT
- Regular price
-
- £741.60 £741.60 Inc VAT
- Was £724.17 Ex VAT
Free Delivery Over £75 *
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30-Day Easy Returns
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As a STIHL Approved Dealer, we supply genuine UK-spec machines with full manufacturer warranty, professional preparation, and expert aftersales support.
Product information & specifications
STIHL FSA 400 Cordless Clearing Saw
The STIHL FSA 400 cordless clearing saw is a very high-performance professional tool for heavy grass clearance, shredding dense growth and felling small trees. As STIHL’s first battery-powered clearing saw, it delivers cutting performance comparable to the petrol FS 411 C-EM, with the added benefits of low noise and zero exhaust emissions – ideal for landscaping and grounds maintenance in noise-sensitive areas such as schools, hospitals and residential sites.
Powered by the STIHL AP System, the FSA 400 features a comfortable bike handle with quick folding clamp adjustment, so you can set an ergonomic working position in seconds. A durable EC motor with 3 speed levels and automatic RPM adjustment tailors performance to the cutting attachment in use – up to 6,900 rpm with BrushCut or PolyCut heads, and around 5,000 rpm with the AutoCut head – helping optimise both cutting performance and battery runtime.
The integrated STIHL anti-vibration system and the supplied ADVANCE PLUS universal harness work together to reduce operator fatigue on long shifts. A fine metal mesh air filter maintains optimal cooling for longer service life and is easy to remove and clean. With IPX4 splashwater protection, a sturdy battery housing and a 28 mm aluminium shaft, the FSA 400 is built to withstand daily professional use in tough UK conditions. A dedicated mounting point for the STIHL Smart Connector 2 A makes it easy to integrate into STIHL connected fleets.
Key Features
- Very high-performance cordless clearing saw for professional use
- Comparable power output to the STIHL FS 411 C-EM petrol clearing saw
- Ideal for tough grass, dense vegetation and felling small trees
- Low noise and zero exhaust emissions – perfect for noise-sensitive areas
- Comfortable bike handle with quick folding clamp for tool-free adjustment
- 3 speed levels with automatic RPM adjustment to suit the cutting head
- EC brushless motor for high efficiency and long service life
- STIHL anti-vibration system and ADVANCE PLUS universal harness for reduced fatigue
- Durable design with stainless steel filter and 28 mm aluminium shaft
- IPX4 splashwater protection for work in all weather conditions
- Smart Connector 2 A ready for STIHL connected fleet management
- Supplied tool only – battery and charger sold separately
Specifications
| Specification | Detail |
|---|---|
| Product type | Professional cordless clearing saw |
| Power source | STIHL AP System battery (tool only) |
| Handle | Ergonomic bike handle with folding clamp adjustment |
| Speed levels | 3-stage speed selection with automatic RPM adjustment |
| Typical RPM (AutoCut) | Approx. 5,000 rpm |
| Typical RPM (BrushCut / PolyCut) | Approx. 6,900 rpm |
| Standard cutting head | AutoCut 46-2 mowing head |
| Compatible mowing heads | AutoCut 46-2, TrimCut 42-2, DuroCut 40-4, PolyCut 48-2 |
| Compatible metal blades | GrassCut grass blades, BrushCut brush knives, ShredCut shredder blades, WoodCut circular saw blades |
| Anti-vibration | STIHL anti-vibration system for reduced hand-arm vibration |
| Cooling / filtration | Fine metal mesh air filter for optimal engine cooling and long service life |
| Shaft | 28 mm aluminium shaft |
| Weather protection | IPX4 – splashwater protected for use in rain |
| Harness | ADVANCE PLUS universal harness included |
| Connectivity | Smart Connector 2 A ready (STIHL connected) |
FAQs
What type of work is the STIHL FSA 400 best suited for?
The FSA 400 is designed for heavy-duty clearing tasks such as tough grass, dense undergrowth, shredding thick plant material and felling small trees where petrol-level performance is required.
How does the FSA 400 compare to a petrol clearing saw?
Its power output is comparable to the STIHL FS 411 C-EM, providing a serious alternative to petrol with the benefits of lower noise, no exhaust emissions and reduced maintenance.
Does the STIHL FSA 400 include a battery and charger?
No. This is a tool-only unit supplied with the AutoCut 46-2 head and an ADVANCE PLUS universal harness. Compatible batteries and chargers from the STIHL AP System are sold separately.
Which cutting attachments can I use with the FSA 400?
As standard it comes with the AutoCut 46-2 mowing head. It can also be fitted with TrimCut 42-2, DuroCut 40-4 and PolyCut 48-2 heads, plus metal blades including GrassCut, BrushCut, ShredCut and WoodCut for more demanding clearing tasks.
Can I use the FSA 400 in wet weather?
Yes. The clearing saw is IPX4 splashwater protected, meaning it is designed for daily professional use in rainy and damp conditions. Always follow STIHL’s safety guidance when working in wet environments.
Is the FSA 400 comfortable for full-day professional use?
Yes. The STIHL anti-vibration system, ergonomic bike handle and included ADVANCE PLUS universal harness make the FSA 400 comfortable and controllable during extended shifts, helping to reduce fatigue.
Helpful Links
If you’re choosing the right setup for this product, you may also want to explore the related categories, batteries, chargers, and cordless tool ranges below.
Shop Related Categories
Complete Your Setup
Helpful Guides
| Rated voltage | 36 V |
| Power | 2 kW 1) |
| Battery system | AP |
| Recommended battery | AP 500 S |
| Device weight without battery | 7.1 kg 2) |
| Cutting circle diameter | 520 mm |
| IPX Rating | IPX4 |
| Min. battery working time AP 300 S with line mowing head | 12 min 3) |
| Max. battery working time AP 300 S with line mowing head | 20 min 3) |
| Min. battery working time AP 300 S with plastic blade mowing head | 16 min 3) |
| Max. battery working time AP 300 S with plastic blade mowing head | 29 min 3) |
| Min. battery working time AP 300 S with metal blade | 12 min 3) |
| Max. battery working time AP 300 S with metal blade | 20 min 3) |
| Min. battery working time AP 500 S with line mowing head | 15 min 3) |
| Max. battery working time AP 500 S with line mowing head | 25 min 3) |
| Min. battery working time AP 500 S with plastic blade mowing head | 20 min 3) |
| Max. battery working time AP 500 S with plastic blade mowing head | 40 min 3) |
| Min. battery working time AP 500 S with metal blade | 15 min 3) |
| Max. battery working time AP 500 S with metal blade | 25 min 3) |
| Device length without cutting tool | 179 cm |
| Sound pressure level | 83 dB(A) 4) |
| Sound power level | 96 dB(A) 4) |
| Vibration level, left | 2.4 m/s² 5) |
| Vibration level, left | 2.4 m/s² 5) |
| Vibration level, right | 1.6 m/s² 5) |
| Vibration level, right | 1.8 m/s² 5) |
STIHL FSA 400 Cordless Clearing Saw
The STIHL FSA 400 cordless clearing saw is a very high-performance professional tool for heavy grass clearance, shredding dense growth and felling small trees. As STIHL’s first battery-powered clearing saw, it delivers cutting performance comparable to the petrol FS 411 C-EM, with the added benefits of low noise and zero exhaust emissions – ideal for landscaping and grounds maintenance in noise-sensitive areas such as schools, hospitals and residential sites.
Powered by the STIHL AP System, the FSA 400 features a comfortable bike handle with quick folding clamp adjustment, so you can set an ergonomic working position in seconds. A durable EC motor with 3 speed levels and automatic RPM adjustment tailors performance to the cutting attachment in use – up to 6,900 rpm with BrushCut or PolyCut heads, and around 5,000 rpm with the AutoCut head – helping optimise both cutting performance and battery runtime.
The integrated STIHL anti-vibration system and the supplied ADVANCE PLUS universal harness work together to reduce operator fatigue on long shifts. A fine metal mesh air filter maintains optimal cooling for longer service life and is easy to remove and clean. With IPX4 splashwater protection, a sturdy battery housing and a 28 mm aluminium shaft, the FSA 400 is built to withstand daily professional use in tough UK conditions. A dedicated mounting point for the STIHL Smart Connector 2 A makes it easy to integrate into STIHL connected fleets.
Key Features
- Very high-performance cordless clearing saw for professional use
- Comparable power output to the STIHL FS 411 C-EM petrol clearing saw
- Ideal for tough grass, dense vegetation and felling small trees
- Low noise and zero exhaust emissions – perfect for noise-sensitive areas
- Comfortable bike handle with quick folding clamp for tool-free adjustment
- 3 speed levels with automatic RPM adjustment to suit the cutting head
- EC brushless motor for high efficiency and long service life
- STIHL anti-vibration system and ADVANCE PLUS universal harness for reduced fatigue
- Durable design with stainless steel filter and 28 mm aluminium shaft
- IPX4 splashwater protection for work in all weather conditions
- Smart Connector 2 A ready for STIHL connected fleet management
- Supplied tool only – battery and charger sold separately
Specifications
| Specification | Detail |
|---|---|
| Product type | Professional cordless clearing saw |
| Power source | STIHL AP System battery (tool only) |
| Handle | Ergonomic bike handle with folding clamp adjustment |
| Speed levels | 3-stage speed selection with automatic RPM adjustment |
| Typical RPM (AutoCut) | Approx. 5,000 rpm |
| Typical RPM (BrushCut / PolyCut) | Approx. 6,900 rpm |
| Standard cutting head | AutoCut 46-2 mowing head |
| Compatible mowing heads | AutoCut 46-2, TrimCut 42-2, DuroCut 40-4, PolyCut 48-2 |
| Compatible metal blades | GrassCut grass blades, BrushCut brush knives, ShredCut shredder blades, WoodCut circular saw blades |
| Anti-vibration | STIHL anti-vibration system for reduced hand-arm vibration |
| Cooling / filtration | Fine metal mesh air filter for optimal engine cooling and long service life |
| Shaft | 28 mm aluminium shaft |
| Weather protection | IPX4 – splashwater protected for use in rain |
| Harness | ADVANCE PLUS universal harness included |
| Connectivity | Smart Connector 2 A ready (STIHL connected) |
FAQs
What type of work is the STIHL FSA 400 best suited for?
The FSA 400 is designed for heavy-duty clearing tasks such as tough grass, dense undergrowth, shredding thick plant material and felling small trees where petrol-level performance is required.
How does the FSA 400 compare to a petrol clearing saw?
Its power output is comparable to the STIHL FS 411 C-EM, providing a serious alternative to petrol with the benefits of lower noise, no exhaust emissions and reduced maintenance.
Does the STIHL FSA 400 include a battery and charger?
No. This is a tool-only unit supplied with the AutoCut 46-2 head and an ADVANCE PLUS universal harness. Compatible batteries and chargers from the STIHL AP System are sold separately.
Which cutting attachments can I use with the FSA 400?
As standard it comes with the AutoCut 46-2 mowing head. It can also be fitted with TrimCut 42-2, DuroCut 40-4 and PolyCut 48-2 heads, plus metal blades including GrassCut, BrushCut, ShredCut and WoodCut for more demanding clearing tasks.
Can I use the FSA 400 in wet weather?
Yes. The clearing saw is IPX4 splashwater protected, meaning it is designed for daily professional use in rainy and damp conditions. Always follow STIHL’s safety guidance when working in wet environments.
Is the FSA 400 comfortable for full-day professional use?
Yes. The STIHL anti-vibration system, ergonomic bike handle and included ADVANCE PLUS universal harness make the FSA 400 comfortable and controllable during extended shifts, helping to reduce fatigue.
Helpful Links
If you’re choosing the right setup for this product, you may also want to explore the related categories, batteries, chargers, and cordless tool ranges below.
Shop Related Categories
Complete Your Setup
Helpful Guides
| Rated voltage | 36 V |
| Power | 2 kW 1) |
| Battery system | AP |
| Recommended battery | AP 500 S |
| Device weight without battery | 7.1 kg 2) |
| Cutting circle diameter | 520 mm |
| IPX Rating | IPX4 |
| Min. battery working time AP 300 S with line mowing head | 12 min 3) |
| Max. battery working time AP 300 S with line mowing head | 20 min 3) |
| Min. battery working time AP 300 S with plastic blade mowing head | 16 min 3) |
| Max. battery working time AP 300 S with plastic blade mowing head | 29 min 3) |
| Min. battery working time AP 300 S with metal blade | 12 min 3) |
| Max. battery working time AP 300 S with metal blade | 20 min 3) |
| Min. battery working time AP 500 S with line mowing head | 15 min 3) |
| Max. battery working time AP 500 S with line mowing head | 25 min 3) |
| Min. battery working time AP 500 S with plastic blade mowing head | 20 min 3) |
| Max. battery working time AP 500 S with plastic blade mowing head | 40 min 3) |
| Min. battery working time AP 500 S with metal blade | 15 min 3) |
| Max. battery working time AP 500 S with metal blade | 25 min 3) |
| Device length without cutting tool | 179 cm |
| Sound pressure level | 83 dB(A) 4) |
| Sound power level | 96 dB(A) 4) |
| Vibration level, left | 2.4 m/s² 5) |
| Vibration level, left | 2.4 m/s² 5) |
| Vibration level, right | 1.6 m/s² 5) |
| Vibration level, right | 1.8 m/s² 5) |
STIHL Warranty
STIHL offer a 1 year professional warranty or 2 year domestic warranty with all of their machines.
The following exceptions apply:
- AK System, AS System and AI Line cordless products aren't covered under warranty when used by professionals
- AP System machines, batteries and chargers - 2 year professional warranty
- Pressure washers - 2 year professional warranty or 3 year domestic warranty
- Mowers, tillers, shredders, scarifiers & iMOW machines - See STIHL's website here
Extend your Stihl warranty by an additional year when purchasing a STIHL Smart Connector with selected machinery from the petrol and cordless range. Extends your petrol warranty from 1 to 2 years AND 2 to 3 years on select cordless tools.
STIHL offer a 1 year professional warranty or 2 year domestic warranty with all of their machines.
The following exceptions apply:
- AK System, AS System and AI Line cordless products aren't covered under warranty when used by professionals
- AP System machines, batteries and chargers - 2 year professional warranty
- Pressure washers - 2 year professional warranty or 3 year domestic warranty
- Mowers, tillers, shredders, scarifiers & iMOW machines - See STIHL's website here
Extend your Stihl warranty by an additional year when purchasing a STIHL Smart Connector with selected machinery from the petrol and cordless range. Extends your petrol warranty from 1 to 2 years AND 2 to 3 years on select cordless tools.
Delivery & Returns
UK Delivery
Fast, reliable delivery from our UK warehouse.
- Free UK delivery on eligible orders over £75 +VAT. Long, heavy or oversized items may incur an additional delivery charge, shown at checkout.
- UK Standard Delivery from £3.60 + VAT
Estimated delivery: 2–4 working days - Next Working Day Delivery – £6.00 + VAT
Order before 3:00pm (Monday–Friday) for next working day delivery
All UK orders are dispatched Monday–Friday and sent via a tracked courier service.
International Delivery
We ship worldwide from the UK.
- Europe from £10.00
Estimated delivery: 2–7 working days - Rest of the World from £12.00
Estimated delivery: 2–11 working days
Shipping costs and delivery times are calculated at checkout based on destination and order contents.
Customs, Duties & Taxes
International orders may be subject to local import duties, taxes, or customs charges.
When UPS is selected at checkout, applicable duties and taxes are included in the total price. For other shipping services, duties and taxes may be charged separately on delivery and are the responsibility of the recipient.
Customs processing times may affect delivery estimates.
Returns
30-Day Return Policy
- Items can be returned within 30 days of delivery
- Products must be unused and in original condition
- Return postage costs apply unless the item is faulty or incorrect
For full details, please visit our Shipping & Returns page.
UK Delivery
Fast, reliable delivery from our UK warehouse.
- Free UK delivery on eligible orders over £75 +VAT. Long, heavy or oversized items may incur an additional delivery charge, shown at checkout.
- UK Standard Delivery from £3.60 + VAT
Estimated delivery: 2–4 working days - Next Working Day Delivery – £6.00 + VAT
Order before 3:00pm (Monday–Friday) for next working day delivery
All UK orders are dispatched Monday–Friday and sent via a tracked courier service.
International Delivery
We ship worldwide from the UK.
- Europe from £10.00
Estimated delivery: 2–7 working days - Rest of the World from £12.00
Estimated delivery: 2–11 working days
Shipping costs and delivery times are calculated at checkout based on destination and order contents.
Customs, Duties & Taxes
International orders may be subject to local import duties, taxes, or customs charges.
When UPS is selected at checkout, applicable duties and taxes are included in the total price. For other shipping services, duties and taxes may be charged separately on delivery and are the responsibility of the recipient.
Customs processing times may affect delivery estimates.
Returns
30-Day Return Policy
- Items can be returned within 30 days of delivery
- Products must be unused and in original condition
- Return postage costs apply unless the item is faulty or incorrect
For full details, please visit our Shipping & Returns page.