Direct product selection: Backpack brushcutters

FR 450

Extremely powerful 2.1kW-Backpack brushcutter

General

FR 450

Excellent for mowing sloping ground and difficult terrain. STIHL anti-vibration system, STIHL ElastoStart, multi-function handle, loop handle, very high output and low weight.

Versions



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 Values
Power output 2,1/2,9 kW/bhp
Displacement 44,3 cm³
Weight 1) 10,8 kg
Sound power level with metal tool 2) 111 dB(A)
Sound pressure level with plastic tool 2) 95 dB(A)
Sound pressure level with metal tool 2) 91 dB(A)
Sound power level 2) 114 dB(A)
Vibration level, left with plastic tool 3) 2,6 m/s²
Vibration level, right with plastic tool 3) 2,3 m/s²
Vibration level, left/right with metal tool 3) 1,8/1,6 m/s²
Total length 4) 28 m
Standard cutting tool Grass cutting blade 230-4
Cutting diameter 420 mm

1) Without fuel, cutting tool and without protection
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

  • Loop handle (R) Zoom
    Loop handle (R)

    The loop handled grass trimmers and brushcutters are ideal for working in areas where space is limited, e.g. thinning between bushes and shrubs.

  • STIHL ElastoStart Zoom
    STIHL ElastoStart

    STIHL ElastoStart reduces the shock caused by the compression of the engine during starting. The compression shock is taken away from the user's joints and muscles through a spring or rubber element in the starter handle.

  • Manual fuel pump (Purger) Zoom
    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 pulls required following extended breaks in operations.

  • Anti-vibration system Zoom
    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 developed an effective anti-vibration system whereby the oscillations from the machine's engine are dampened which significantly reduces vibrations at the handles.

  • Multi-function control handle Zoom
    Multi-function control handle

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

  • Shoulder strap / carrying system Zoom
    Shoulder strap / carrying system

    Using a STIHL shoulder strap or carrying harness with soft padding makes work more comfortable, particularly during lengthy jobs.

  • Decompression valve Zoom
    Decompression valve

    The decompression valve allows some of the compression pressure in the cylinder to escape, so less force on the starter rope is needed.

  • Compensator Zoom
    Compensator

    A controller in the carburettor prevents the fuel-air mixture getting richer as the air filter becomes clogged. The correct quantity of fuel is delivered to the carburettor depending on the quantity of air passing through the air filter. This keeps the fuel/air ratio in the combustion mixture constant and hence also the engine power. The filter doesn't need to be cleaned until an appreciable drop in power occurs.

  • Goggles Zoom
    Goggles

    It is important to protect your eyes from debris and harmful UV radiation. A pair of safety glasses is supplied with this machine. Please 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

Cutting Tools

    • SuperCut mowing head (2 line) Zoom
      SuperCut mowing head (2 line)

      Double line, for mowing and thinning work. Mowing lines are automatically adjusted for optimal cutting length.

    Versions

    • AutoCut mowing head Zoom
      AutoCut mowing head

      Two lines, for mowing and clearing work. Mowing lines are automatically extended by tapping the mowing head on the ground.

    Versions

    • Grass cutting blade (4 blades) Zoom
      Grass cutting blade (4 blades)

      Made of steel. With four cutters for mowing thick, dry grass and reeds

    Versions

    • Grass cutting blade (8 teeth) Zoom
      Grass cutting blade (8 teeth)

      Made of steel with 8 teeth for mowing thick, dry grass and reeds.

    Versions

    • Brush knife Zoom
      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

    • TrimCut mowing head Zoom
      TrimCut mowing head

      Double line, for mowing and thinning work. Mowing lines are extended by hand.

    Versions

    • AutoCut C mowing head (2-line) Zoom
      AutoCut C mowing head (2-line)

      Double lines, for mowing and thinning work. Mowing lines are automatically extended when the mowing head is tapped on the ground. With comfort grip for easy re-loading.

    Versions

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.

Documents

Owners manuals and safety brochures

Languages Date Link
de / fr / it / nl 14.05.2013
Download PDF 5,8 MB
Download PDF 5,8 MB