Tall Grass Mowing Machines
AS 901 SM Walk-Behind Flail Mower AS-MOTOR - Mowers & Brushcutters. The AS 901 SM is a self-propelled professional mower designed to mow grass up to 130cm high on various terrains, from flat areas to slopes. Its front wheels move freely and thanks to its inventive design, the mower is extremely versatile and easy to use. With its power, it can cut tough grasses and bushes, while with its flexibility, it can approach difficult places and surfaces. This is a useful tool for those who need a reliable and easy-to-use mower. Ideal for private customers as well as service providers and municipalities.► It is offered with a company guarantee
► Provided with the possibility of immediate and economical service
► Backed by genuine parts to replace consumables and components

Height Adjustment
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Manual Transmission
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| Easy cutting height adjustment with lever. | 5-gear manual transmission with limited slip differential and reverse gear for excellent propulsion, even on wet grass. | |
Adjustable Operating Bar
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Impact Guard
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| Guide bar can be adjusted laterally and in height to adapt to the size of each operator. | A perforated impact guard ensures a high level of operator safety. |
The AS 901 SM delivers high work rates and perfect handling whether on slopes, in dense growth or high grass. A Briggs & Stratton Vanguard Series 2-cylinder engine with 480 ccm displacement, up to 16.0 hp and an oil and fuel pump performs in tough conditions without the risk of engine damage. Propulsion occurs via a 5-speed manual transmission with reverse gear (1.8 km/h) that covers a speed range from 1.2–4.0 km/h. The rear axle differential is permanently locked, resulting in excellent traction even on wet grass. Twin tyres ensure even greater traction and stability while a vertically installed engine provides a low centre of gravity and balanced distribution of weight, at a total of 215 kg.
The AS 901 SM is conveniently operated via four levers. Individual wheels are controlled via a patented steering and brake clutch system by which light pressure on the wheel’s respective operating lever opens the limited slip differential; full pressure activates the brake on that wheel. Furthermore, the limited slip differential is permanently locked when in drive and the automatic parking brake engages as soon as the drive lever is released. This added safety feature stops the flail mower whether on a slope or level ground. Teflon-coated stainless steel Bowden cables ensure minimal expenditure of force. The result is safe, simple, and convenient operation.
With a robust 90 cm wide flail mowing unit equipped with 26 pairs of Y-flails, the AS 901 SM is engineered for harsh conditions. The flail mower can cut grass up to 130 cm high at work rates reaching 3,600 m² per hour. The flail mowing unit is supported by pendulum bearings, delivering uniform mulching results by compensating for uneven terrain. The flails ride up and over obstacles, protecting both the engine and the operator from damage. A perforated impact guard provides additional safety. Cutting height can be adjusted to 6 levels from 10–100 mm, while the operating bar can be conveniently adjusted laterally and in height to match both the operator and the conditions.
Performs on slopes
Extra fuel and oil pump with oil pressure switch optimize performance on slopes.
Robust flail mower unit (AS 901 )
Pendulum-bearing supported flail mower unit with 20 pairs of Y-flails for high work rates and an extremely clean mulching result.
Automatic parking brake
When the drive lever is released the machine stops automatically, whether on a slope or level ground.
Steering and brake clutch
Single-wheel brake controls the device precisely and effortlessly.
Permanent limited slip differential
Permanently locked limited slip differential opens only when steering with the steering and brake clutch.
Lightweight and balanced
Stable, lightweight construction with double-wall mower deck and rigid square frame. Low centre of gravity for optimal slope performance.
Thrown object test (AS 901)
Tested in accordance with DIN EN 12733:2011-06.
| Flail MOWERS AS-MOTOR AS 901 SM | |
| Category | Wheeled Flail Mowers |
| Fuel | Unleaded Petrol |
| Engine | 4-Stroke (Briggs & Stratton Vanguard Series 2 V-Twin) |
| Displacement | 480 cc |
| Maximum Power | 11,9/16,0 kW (hp) |
| Rated Power | 10,7/14,5 kW (hp) |
| Rated Speed (RPM) | 3500 |
| Cutting Width | 90 cm |
| Cutting Height | 1 - 10 cm |
| Blade Clutch | Mechanical |
| Starting Device | Manual (recoil) |
| Mowing Deck | Closed |
| Flail Pairs | 26 (Y shape) |
| Wheels | 2 rear tractors - 2 front |
| Drive | Mechanical |
| Nnumber of Gears | 5 + 1 reverse gear |
| Speed | 0 - 1,1 – 3,6 km/h |
| Productivity | 3,600 m²/h |
| Tank Capacity | 5 l |
| Dimensions (LxWxH) | 220x104x105 cm |
| Weight | 215 kg |
| Brand |
AS-MOTOR |
| Origin | Germany |
Private CustomersWhen the goal is perfecting an ornamental lawn, obtaining forage for small animals or tending to the gardens and orchards of weekend homes, AS-Motor offers several professional mowing tools that will provide private users with excellent results for many years to come.
Commercial LandscapingPerformance on rough terrain, perfect cutting results and high efficiency are advantages AS-Motor machines provide to professional service providers.
Meadow OrchardsMeadow orchards characterize the landscape of diverse regions and provide valuable ecosystems for insect and bird life. Maintaining these areas often involves mowing around trees, on slopes and in rough terrain.
Gardening And LandscapingAS-Motor’s professional technology offers solutions for the diverse tasks of gardening and landscaping, from outdoor facilities to private gardens, public parks and residential lawns.
UtilitiesAS-Motor offers professional technology for the maintenance of green spaces in and around public utility facilities.
Hunting And ForestryIn forests and on hunting grounds, mowing can take place as infrequently as once per year or even at intervals of several years. AS-Motor machines are engineered to tackle the thick growth native to these areas as well as Christmas tree plantations.
Leisure FacilitiesLeisure facilities must be visually appealing and expertly maintained. Whether parks or campsites, these areas are frequently used and thus require careful maintenance.
Athletic Facilities And Golf CoursesManagement of edge areas, embankments and lawns of athletic facilities are as important as the greens themselves.
ViticultureViticulture, or wine-growing, is one of civilization's oldest forms of agriculture. AS-Motor was founded 60 years ago with the objective of tackling the slopes and thick growth of vineyards.