Direct product selection: Petrol brushcutters for landscape maintenance

FS 91

FS 91 petrol brushcutter: powerful and long-lasting

General

For working on large areas of tough grass. A simplified start-up sequence for convenient starting, bike handle, control handle with stop button, 4-MIX® engine with larger tank for greater battery life, rigid drive shaft, double shoulder harness.

Versions

FS 91

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Deviations from the product range and information provided here are possible, depending on the country. STIHL reserves the right to make changes to technical specifications and equipment.

Technical specifications

Technical specifications

Technical specifications	Value
Displacement	28,4 cm³
Power output	0,95/1,3 kW/bhp
Weight ¹⁾	5,8 kg
Sound pressure level ²⁾	96 dB(A)
Sound power level ²⁾	107 dB(A)
Vibration level, left/right with plastic tool ³⁾	5,5/4,5 m/s²
Cutting tool	Grass cutting blade 230-2
Total length ⁴⁾	180 cm

1) Weight excluding fuel, cutting tool and guard
2) K-factor according to DIR 2006/42/EC = 2.5 dB (A)
3) K-factor according to DIR 2006/42/EC = 2m / s ²
4) Without cutting tool

Deviations from the product range and information provided here are possible, depending on the country. STIHL reserves the right to make changes to technical specifications and equipment.

Features

Standard equipment

TOOL-FREE HANDLE ADJUSTMENT

SET THE BIKE HANDLE POSITION. You can individually adjust the ergonomic bike handle (mowing handle) using the central clamping device. Thanks to the tool-free handle adjustment, you do not need any tools for this. The bike handle can be rotated 90 degrees for transport and space-saving storage.
ERGONOMIC BIKE HANDLE

EFFORTLESS MOWING OF LARGE AREAS. The ergonomic bike handle helps you mow large areas quickly and effortlessly, as this handle supports a natural brushcutter movement. The bike handle is easy to adjust and secure.
LONG AIR FILTER SERVICE LIFE

ENSURES LONG CHANGEOVER INTERVALS. Thanks to its long service life, you rarely need to change the easily accessible filter. This saves resources and reduces maintenance effort.
STIHL 4-MIX® engine

You can always rely on STIHL to keep setting new benchmarks this time with 4-stroke mixed lubrication technology. The STIHL 4-MIX® engine, which runs on a fuel-oil mix just like a 2-stroke, offers the benefits without the compromises of 4-stroke power. STIHL 4-MIX® engine technology provides fast acceleration, more power, added torque, lower noise, reduced emissions and increased fuel efficiency to complete jobs quickly, quietly and more easily.
Multi-function control handle

Easy, comfortable thumb-operated control means the operator's hand never leaves the handle.
Anti-vibration system

Intense vibration at the handles of power tools can lead to long-term effects on blood vessels in the hands and arms. STIHL has therefore developed an effective anti-vibration system whereby the oscillations from the machine's engine are dampened which significantly reduces vibrations at the handles.
ADVANCE Universal Harness

Soft padding makes work more comfortable during longer jobs.
Stop button

You do not need to control the stop button when restarting. The engine can be started at any time.
Manual fuel pump (Purger)

A small fuel pump delivers fuel to the carburettor at the touch of a button. This reduces the number of starting strokes required following extended breaks in operations.
Goggles

It is important to protect your eyes from flying particles and harmful UV radiation. Therefore a pair of safety goggles/glasses are supplied with the the machine. Note: Additional face protection must be worn when working with brushcutters.

Deviations from the product range and information provided here are possible, depending on the country. STIHL reserves the right to make changes to technical specifications and equipment.

Cutting Tools

- GrassCut Grass cutting blade (8 teeth)
  
  Made of steel with 8 teeth for mowing thick, dry grass and reeds.
Versions
- Grass cutting blade 230 mm (8 teeth)
- GrassCut 250-32, low spin
  
  Flying stones and gravel often create problems when mowing with clearing saws on traffic islands or in public parks and green spaces. STIHL has the answer: the low-spin 250-32 grass-cutting blade with KWF certificate reduces the safety distance from objects and vehicles to three metres. Thanks to the special tooth shape, the risk of particles flying around is reduced to a minimum. The result is greater safety, maximum working comfort and quicker results. Article 4001 713 3813 for FS 80 , FS 85 , FS 89 , FS 91 , FS 111 , FS 131 , FSA 130, FSA 135, FSA 130 R, FSA 135 R, FS 94 RC-E , FS 94 C-E , FSA 90 R, FSA 90, FS 240 C-E, FR 131 T, FR 480 , FR 480 C-F, FR 410 C-E , FR 460 TC-EM. Article 4001 713 3812 for FS 260 C-E, FS 311, FS 360 C-EM , FS 410 C-EM ,FS 410 C-EM L, FS 410 C-EM K , FS 460 C-EM K , FS 490 C-EM K , FS 490 C-EM K, FS 460 C-EM , FS 460 C-EM L , FS 490 C-EM , FS 490 C-EM L, FS 510 C-EM, FS 560 C-EM.
Versions
- GrassCut 250-32
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- GrassCut Grass cutting blade 250-44
  
  Low-throw, steel grass-cutting blade with 44 teeth (diameter: 250 mm). Clippings are not scattered, and the risk of stones flying up as debris is low. Ideal for mowing tough, dry grass and stubborn weeds. Suitable for reeds and bushes. Use only with the universal guard.
Versions
- Grass cutting blade 250-44
- AutoCut mowing head 36-2
  
  Two lines, for mowing and clearing work. Mowing lines are automatically extended by tapping the mowing head on the ground.
Versions
- AutoCut mowing head 36-2
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- AutoCut mowing head C 26-2
  
  Double lines, for mowing and thinning work. Mowing lines are automatically extended when the mowing head is tapped on the ground.
Versions
- AutoCut mowing head C 26-2
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- DuroCut mowing head 20-2
  
  Double lines, for mowing and thinning work. Up to four lines can be easily inserted. Compatible with many different sizes and types of mowing line.
Versions
- DuroCut 20-2
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- DuroCut mowing head 20-2
  
  Double lines, for mowing and thinning work. Up to four lines can be easily inserted. Compatible with many different sizes and types of mowing line.
Versions
- DuroCut 20-2
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- SuperCut mowing head (2 line)
  
  Double line, for mowing and thinning work. Mowing lines are automatically adjusted for optimal cutting length.
Versions
- Mowing line SuperCut 20-2
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- GrassCut Grass cutting blade (2 blades)
  
  Steel double blade, reversible. For working on areas of tough grass.
Versions
- Grass cutting blade 230 mm (2 blade)
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- GrassCut Grass cutting blade (2 blades)
  
  Steel double blade, reversible. For working on areas of tough grass.
Versions
- Grass cutting blade 260 mm (2 blade)
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- TrimCut mowing head C 32-2
  
  Double line, for mowing and thinning work. Mowing lines are extended by hand.
Versions
- TrimCut mowing head C 32-2, Ø 2,4 mm
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- GrassCut Grass cutting blade (4 blades)
  
  Made of steel. With four cutters for mowing thick, dry grass and reeds
Versions
- Grass cutting blade 230 mm (4 blade)
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- GrassCut Grass cutting blade (8 teeth)
  
  Made of steel with 8 teeth for mowing thick, dry grass and reeds.
Versions
- Grass cutting blade 230 mm (8 teeth)
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- GrassCut cutting blade (40 teeth)
  
  Grass cutting blade with forty teeth. For mowing tough grass.
Versions
- Grass cutting blade 250-40 Special
- GrassCut Grass cutting blade 250-44
  
  Low-throw, steel grass-cutting blade with 44 teeth (diameter: 250 mm). Clippings are not scattered, and the risk of stones flying up as debris is low. Ideal for mowing tough, dry grass and stubborn weeds. Suitable for reeds and bushes. Use only with the universal guard.
Versions
- Grass cutting blade 250-44
- BrushCut Brush knife
  
  Brush blade made of special steel. Ideal for thinning and clearing tough, matted grass and scrub. Also the pruning of thorn hedges. For use with universal protection.
Versions
- 250 mm (3 blade)
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- WoodCut Circular saw blade, scratcher-tooth
  
  Special steel tool for mid and high-performance brushcutters. For gnarled bushes and thin tree trunks. Must be used with appropriate stop kit. Only approved for certain bike handle machines.
Versions
- 200 mm (80 teeth)
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- WoodCut Circular saw blade, chisel-tooth
  
  Special steel tool for mid and high-performance brushcutters. For gnarled bushes and thin tree trunks. Must be used with appropriate stop kit. Only approved for certain bike handle machines.
Versions
- 200 mm (22 teeth)
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Deviations from the product range and information provided here are possible, depending on the country. STIHL reserves the right to make changes to technical specifications and equipment.

Accessories

- ADVANCE PLUS forestry harness
  
  Ergonomically designed harness offering great freedom of movement thanks to the freely suspended leg protection. Very light and with comfort carry ring for quickly attaching and removing the clearing saw. For FS 310 - FS 560.
Versions
- ADVANCE PLUS forestry harness
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- ADVANCE PLUS universal harness
  
  With quick release system for fast connection and disconnection of brushcutters. Suitable for FS 50 - FS 560
Versions
- ADVANCE PLUS universal harness
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- ADVANCE universal harness, fluorescent orange
  
  High visibility. Perfectly complements protective clothing when mowing in hazardous areas, with a comfort carry ring for quickly attaching and removing the clearing saw, for FS 50 – FS 560 and FSA 90.
Versions
- ADVANCE universal harness, fluorescent orange
- Upgrade Kit GrassCut 250-32
  
  For converting clearing saws that have a nylon mowing head to the GrassCut 250-32 low-spin grass-cutting blade, including all attachments and transport guard. Consists of: 1 × GrassCut 250-32 1 × metal tool transport guard 1 × rider plate 1 × thrust washer 1 × collar nut For FSA 130, FSA 135, FS 89, FS 91, FS 94, FS 111, FS 131, FS 240, FR 131 T, FR 410, FR 460 and FR-KM.
Versions
- Upgrade Kit GrassCut 250-32
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- Tool bag
  
  A practical way of transporting tools. Two compartments. Easily attached to the universal or forestry harness.
Versions
- Tool bag ADVANCE
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- Protective cover for brushcutters
  
  Perfect transport protection for the engine housing of brushcutters and clearing saws. For FS 38 - FS 450.
Versions
- Protective cover for brushcutters
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- Stop kit for circular saw blades
  
  Stop kit and protection for circular saw blades. For accurate cutting with a circular saw blade.
Versions
- Stop kit for circular saw blades, Ø 200 mm
- FH 145° scrub cutter
  
  For cutting close to the ground and for low-spin mowing in very narrow spaces. Flexible adjustment mechanism, space-saving carrying position. Weight: 1.5 kg. Fits FS 90, FS 91, FS 100, FS 111, FS 130 and FS 131.
Versions
- FH 145° scrub cutter
- Chest belt
  
  Ensures the shoulder straps are securely positioned. For BR 200, BR 350, BR 430, BR 450, BR 500 and BR 600.
Versions
- Chest belt ADVANCE
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- ADVANCE forestry harness
  
  Freely suspended leg protection provides excellent freedom of movement. Extremely ergonomic and comfortable for forestry use with circular saw blades. Very light. Tool bag also available. Suitable for FS 100 - FS 550.
Versions
- Standard size
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- ADVANCE universal harness
  
  Extremely ergonomic, comfortable and light. For strength-saving mowing and shredding. Chest belt and tool bag also available. Suitable for FS 50 - FS 550.
Versions
- ADVANCE universal harness, Standard size
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STIHL Smart Connector

The STIHL Smart Connector forms the basis for using all STIHL connected functions. These functions can be used via both the STIHL connected App and the STIHL connect Portal. Once correctly attached to a STIHL power tool or another manufacturer’s power tool, the STIHL Smart Connector records operational hours while the machine is running, stores them and transmits them to your smartphone via Bluetooth as soon as it is within range. The data received in the STIHL connected App is transferred to the STIHL Cloud when there is an internet connection. The data is stored there in compliance with data protection regulations. The STIHL connected App and STIHL connected Portal allow you to access your power tool data at any time. STIHL connected opens up new avenues for professional users to obtain a convenient and transparent overview of their own power tool fleet. At the same time, STIHL connected provides information including operational hours, power tool status including reminders of overdue maintenance, the last known location, and whether or not the power tools are currently nearby. For professional users, this means improved digital fleet management, more efficient processes within companies, and even closer contact with STIHL dealers. Private users can also use the system to keep an eye on their power tools and carry out maintenance at the right time.

Technical specifications	Value
Dimensions (l x b x h)	53 x 42 x 14 mm
Signal range	ca. 10 m
Running time per battery charge	ca. 1 Year
Connectivity	BLE 4,2
Battery	3V CR 2.032
Weight	20 g