A STIHL FS 91 petrol brush cutter with an orange body, gray handle, and metallic parts.
    A STIHL FS 91 petrol brush cutter with an orange body, gray handle, and metallic parts.
A STIHL FS 91 petrol brush cutter with an orange body, gray handle, and metallic parts.

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Stihl

FS 91 Petrol Brushcutter

SKU: Stihl | FS-4180 200 0684

Regular price
£491.58 Ex VAT
£491.58 £491.58 Ex VAT
Shipping calculated at checkout.
Regular price
£491.58 Ex VAT
£589.90 Inc VAT
RRP: £578.33 Ex VAT
Sale price
£491.58 £491.58 Ex VAT
Regular price
£589.90 £589.90 Inc VAT
Was £578.33 Ex VAT

In Stock

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payments of £147.47 with

Free Standard UK Delivery Over £75 +VAT

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Product information & specifications

STIHL FS 91 Petrol Brushcutter

Designed for UK landscaping professionals, arborists, forestry crews and serious domestic users who need reliable clearing power and ease of use on thicker vegetation. The STIHL FS 91 petrol brushcutter combines a powerful yet lightweight engine with rugged build quality and ergonomic design, making it ideal for tackling tough grass, brambles, weeds, light scrub and undergrowth — whether in gardens, woodland edges or forestry access tracks.

Key Features & Benefits

  • Efficient 2-stroke petrol engine with STIHL anti-vibration system: Provides strong cutting power while minimising operator fatigue for extended use.
  • Compact and ergonomic design: Easy to handle in tight spaces, around trees or along fences and boundaries without straining the user.
  • Versatile cutting options: Works with a grass-trimmer head or metal cutting blade (depending on clearing needs), ideal for brush, brambles, weeds or thicker vegetation.
  • Durable build for tough terrain: Engineered to withstand regular use in demanding environments — perfect for forestry edges, estate maintenance or farm tracks.
  • Suitable for professional and domestic use: From estate maintenance to garden trimming, offers a balance of power, reliability and ease-of-use.

Technical Specifications

Specification Detail
Engine Type 2-stroke petrol engine
Power Output / Displacement Strong clearing power for grass & undergrowth
Handle & Support Bike-handle with shoulder harness for comfort and control
Cutting Tools Compatibility Grass-trimmer head or metal blade (for thicker scrub / brush) depending on model / attachments
Use Cases Grass cutting, bramble & weed clearance, light scrub, hedgerow base trimming, woodland edge maintenance, estate/garden groundskeeping
Suitability Professional landscaping & forestry, serious domestic ground maintenance

Why Choose the FS 91?

The STIHL FS 91 offers dependable, consistent clearing power for a wide range of vegetation and terrain types — from gardens to woodland edges. Its blend of engine performance, operator comfort and rugged build make it a versatile tool: lightweight enough for regular estate or garden work, capable enough to handle tougher brush and undergrowth for forestry access tracks and site maintenance. For contractors, estate managers or even domestic users needing heavy-duty trimming, the FS 91 balances power and practicality.

Equip yourself for reliable clearing — order the STIHL FS 91 Petrol Brushcutter today and get going on your next job.

Trimmer Technical Data

Starter Cord Auto decompression / manual fuel pump (purger) / standard starter grip
Standard Cutting Tool AutoCut C 26-2 & GrassCut 230-2
Tank Cap STV screw tank cap
EPA Certified Fuel Consumption l/h 0.614
Anti Vibration System Yes
Tank Volume 0.71l
Cutting Diameter 420
Total Length 180
Vibration Value, Right With Plastic Tool m/s2 5.5
Sound Power Level dB(A) 107
Sound Pressure Level with Plastic Tool dB(A) 96
Weight 5.8
Displacement cm3 28.4
Performance 0.95 kW
Power Output hp 1.3
CO² ­g/kWh 877

STIHL FS 91 Petrol Brushcutter

Designed for UK landscaping professionals, arborists, forestry crews and serious domestic users who need reliable clearing power and ease of use on thicker vegetation. The STIHL FS 91 petrol brushcutter combines a powerful yet lightweight engine with rugged build quality and ergonomic design, making it ideal for tackling tough grass, brambles, weeds, light scrub and undergrowth — whether in gardens, woodland edges or forestry access tracks.

Key Features & Benefits

  • Efficient 2-stroke petrol engine with STIHL anti-vibration system: Provides strong cutting power while minimising operator fatigue for extended use.
  • Compact and ergonomic design: Easy to handle in tight spaces, around trees or along fences and boundaries without straining the user.
  • Versatile cutting options: Works with a grass-trimmer head or metal cutting blade (depending on clearing needs), ideal for brush, brambles, weeds or thicker vegetation.
  • Durable build for tough terrain: Engineered to withstand regular use in demanding environments — perfect for forestry edges, estate maintenance or farm tracks.
  • Suitable for professional and domestic use: From estate maintenance to garden trimming, offers a balance of power, reliability and ease-of-use.

Technical Specifications

Specification Detail
Engine Type 2-stroke petrol engine
Power Output / Displacement Strong clearing power for grass & undergrowth
Handle & Support Bike-handle with shoulder harness for comfort and control
Cutting Tools Compatibility Grass-trimmer head or metal blade (for thicker scrub / brush) depending on model / attachments
Use Cases Grass cutting, bramble & weed clearance, light scrub, hedgerow base trimming, woodland edge maintenance, estate/garden groundskeeping
Suitability Professional landscaping & forestry, serious domestic ground maintenance

Why Choose the FS 91?

The STIHL FS 91 offers dependable, consistent clearing power for a wide range of vegetation and terrain types — from gardens to woodland edges. Its blend of engine performance, operator comfort and rugged build make it a versatile tool: lightweight enough for regular estate or garden work, capable enough to handle tougher brush and undergrowth for forestry access tracks and site maintenance. For contractors, estate managers or even domestic users needing heavy-duty trimming, the FS 91 balances power and practicality.

Equip yourself for reliable clearing — order the STIHL FS 91 Petrol Brushcutter today and get going on your next job.

Trimmer Technical Data

Starter Cord Auto decompression / manual fuel pump (purger) / standard starter grip
Standard Cutting Tool AutoCut C 26-2 & GrassCut 230-2
Tank Cap STV screw tank cap
EPA Certified Fuel Consumption l/h 0.614
Anti Vibration System Yes
Tank Volume 0.71l
Cutting Diameter 420
Total Length 180
Vibration Value, Right With Plastic Tool m/s2 5.5
Sound Power Level dB(A) 107
Sound Pressure Level with Plastic Tool dB(A) 96
Weight 5.8
Displacement cm3 28.4
Performance 0.95 kW
Power Output hp 1.3
CO² ­g/kWh 877

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.

Downloads

FS 91 Manual

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.

Downloads

FS 91 Manual

Delivery & Returns

UK Standard Delivery from - £3.60
Estimated delivery 2-4 days


Free Delivery available for orders above £75+ VAT
Estimated delivery 2-4 days


Next Day Delivery - £7.99
Estimated delivery 1 day when ordered before 3PM Monday - Friday

International Delivery Europe from - £10.00
Estimated delivery 2-7 days


International Delivery Rest of the World from - £12.00
Estimated delivery 2-11 days


Returns
30-Day Return Policy
For more information on shipping options, visit our shipping page here.

UK Standard Delivery from - £3.60
Estimated delivery 2-4 days


Free Delivery available for orders above £75+ VAT
Estimated delivery 2-4 days


Next Day Delivery - £7.99
Estimated delivery 1 day when ordered before 3PM Monday - Friday

International Delivery Europe from - £10.00
Estimated delivery 2-7 days


International Delivery Rest of the World from - £12.00
Estimated delivery 2-11 days


Returns
30-Day Return Policy
For more information on shipping options, visit our shipping page here.

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