AS MOTOR AS 901 SM Flail Mower

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A professional flail mower with exceptional cutting features, perfect for tackling challenging vegetation with ease.

High performing Briggs & Stratton Vanguard engine

The AS 901 SM flail mower features a mighty Briggs & Stratton Vanguard V-Twin engine with a 480 cc displacement and a power output of 11.9 kW to deliver an outstanding, reliable and durable performance time and time again.

Built for slopes thanks to a 5-gear manual transmission

Equipped with a 5-gear manual transmission; the AS 901 SM flail mower is simple to operate and thanks to a slip-limiting differential; the AS 901 SM provides great traction when working on wet vegetation and grass.

A varied cutting system to ensure excellent results

The AS 901 SM flail mower is equipped with brilliant cutting features to ensure a high cutting performance.  These features include a wide cutting width of 90 cm alongside an adjustable 6-height cutting system providing the option to choose between 10 mm all the way to a 100 mm to ensure a precise cutting performance.

With an efficient flail system; the AS 901 SM mower can cut grass as tall as a 130 cm, whilst the design of the flails combined with an impact guard, ensure they are protected when going over uneven or bumpy terrain. 

Perfect for use on uneven terrain

Thanks to a low centre of gravity; the AS 901 SM proves to be just as efficient and high performing when on sloping terrain.  Furthermore, thanks to a lightweight yet sturdy frame; this flail mower is easy to navigate whilst also being durable and longer lasting too.





  • Model: Briggs & Stratton Vanguard V-Twin
  • Displacement: 480 cm³
  • Max. power: 11.9 kW
  • Rated power: 10.7 kW
  • Starting device:  Manual
  • Drive:  Mechanical
  • Number of gears: 5-gears


  • Reverse gear:  Yes
  • Automatic parking brake:  Yes
  • Limited-slip differential:  Yes
  • Blade Clutch: Mechanical
  • Flail pairs:  26
  • Flail shape:  Y- shape
  • Tank capacity: 5 litres

Cutting system

  • Number of cutting heights: 6 heights
  • Cutting height range min/ max: 10 mm - 100 mm
  • Closed mowing deck:  Yes
  • Cutting width:  90 cm
  • Maximum grass height: 130 cm


  • Length: 220 cm
  • Width:  104 cm
  • Height:  105 cm
  • Weight:  215 kg




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