AS 940 Sherpa 4WD B&S

High-grass, ride-on mower with permanent all-wheel drive

The AS 940 Sherpa 4WD is a robust, versatile ride-on mower for difficult terrain and high growth. The machine’s 2-cylinder Briggs & Stratton engine with 724 ccm displacement, up to 27 hp and an oil and fuel pump achieve work rates reaching 5,500 m² per hour. Permanent all-wheel drive delivers better traction uphill and stronger, safer braking downhill. The limited slip differential can be activated at any time for more safety. Hydrostatic transmission is controlled exclusively via the drive lever, which controls forward and reverse movements as well as the brake and the parking brake. An additional brake pedal returns the drive lever to neutral and automatically engages the parking brake.

Equipped with the AS cross-blade system, the AS 940 Sherpa 4WD delivers impressive mulching results in grass and dense growth up to 1.5 meters high. Bearing-supported blades cut the grass while a mulching blade positioned above them shreds the cuttings, which are then deposited between the wheels for added safety on slopes and wet grass. The mower deck’s surfing suspension yields upwards to obstacles, protecting the blades and turf from damage. Cutting heights can be adjusted to 5 levels from 50–105 cm and an option mulch kit is available for even finer mulching results.

Stability and comfort

With a highly stable tubular frame, the AS 940 Sherpa 4WD performs even under harsh conditions. Operators up to 1.9 m tall can operate the machine comfortably thanks to a length-adjustable seat and seat spring package. A low centre of gravity, folding bar and branch deflectors are added safety features, while lashing points integrated in the frame enable secure transport.

The AS 940 Sherpa 4WD is engineered for continuous operation with two separate ventilation circuits for the engine and hydrostatic transmission. The engine takes in air from above and discharges it to the side, while the hydrostatic transmission takes air from the rear and discharges it downward. This system prevents overheating and ensures the machine’s long service life.

Product advantages

All-wheel drive (AS 940)

Permanent all-wheel drive ensures better traction uphill and stronger, safer braking downhill.

Surfing mulch-mower deck

Closed mower deck with AS cross-blade system. The main blade cuts, the cross-blade chops the cuttings. The surfing mower deck gives way upward on uneven terrain to protect against damage.

Ergonomic sitting position provides excellent driving comfort

Length-adjustable driver seat, innovative seat suspension and ergonomic sitting position provide comfort for tall operators during long work periods.

Stable tube frame

High stability and torsional rigidity with heavy load.

Optimal all-terrain mobility

Field stud tyres, switchable limited slip differential and an engine suitable for slopes ensure powerful traction on difficult terrain.

Variable hydrostatic transmission (ride-on mower)

Easy adaptation of the speed to every terrain with integrated, mechanical parking brake in the drive lever.

Stable, folding bar

Greater operator safety in the machine's limit area.

Product details

AS mulching mower deck

Closed, surfing mower deck with cross-blade system and bearing-supported blades that yield to obstacles.

Separate air cooling supply

Separate engine air cooling and hydrostatic transmission optimize performance.

Switchable limited slip differential

Comfortable activation of the limited slip differential via foot pedal for excellent propulsion and traction.

Stable, folding bar

Greater operator safety in the machine’s limit area.

Technical Data

cutting width 90 cm
engine manufacturer B&S
engine designation Professional Series 8
4-stroke engine, 1-cyl. / 2-cyl. /
displacement 724 cm³
maximum power 20,1/27,0 kW (hp)
rated power 16,5/22,4 kW (hp)
rated speed 3300 rpm
drive, 2WD rear / 4WD permanent /
drive, variable hydrostatic transmission
max. speed 6,2 km/h
limited-slip differential
automatic parking brake
mono-blade / cross-blade / Y-flails / /
side discharge / rear discharge /
closed mower deck
surfing mower deck
cutting height 50 - 105 mm
tank capacity 17 l
seat spring package, standard / optional /
dimension L/W/H 191x98x152 cm
weight 290 kg
Changes in technology, equipment and price are reserved. Of information or illustrations no claims can be derived.



Cargo area: L = 1071 mm, W = 607 mm, panel height: 274 mm. Permissible total weight: 100 kg. Rear panel can be removed.

Trailer hitch Sherpa

To connect the AS trailer.

Snow blade

Width: 1107 mm, height: 348 mm. Pivots on both sides.

Mulch kit – AS Sherpa

For even finer mulching and more uniform cutting results on lawns with grass up to 40 cm high.

Snow chains

Cross-track chain for the drive wheels.

Weatherproof cab

Weather protection for adverse conditions.

Customer reviews

Structural change does not stop at the cultivation of our orchard meadows. In order to make it attractive for future generations, we decided to buy a Sherpa. We tested the core competitors in comparison, deciding on an AS 940 Sherpa 4WD due to its handling, equipment and off-road capability as a 4WD model. The limited special model Adventure leaves nothing to be desired.
– Volker Gaupp (private user from Weinstadt, Germany)
We have been working with AS machines for over 25 years. Most recently, the AS 940 Sherpa convinced us so much that we had already ordered the second machine. We also use the Sherpa for winter maintenance or as a 'small' tractor in places where our other machines cannot reach. Furthermore, the size of the machine is optimal so it can be transported without any problems - even in a van. At a landfill site, we used the AS 940 to transport plants because Sherpa was the only machine the client had no conserns about its weight.
– Robert Kühn (Managing Director of Kühn Garten-, Landschafts- und Sportplatzbau GmbH in Jessen, Germany)
The machine’s low centre of gravity gives you a safe feeling, even on very uneven terrain. I am quite tall and still sit very comfortably with enough space – this never happens with ride-on mowers.
– Heiner Lorenz (Christmas tree plantations – Heiner Lorenz, Germany)
Dear AS-Motor Team, enclosed are a few impressions from today's green maintenance work on wind turbines. We are surprised every day anew by the performance of our Sherpa. With such a great machine, nothing can go wrong!
– Bastian Stahl (Forestry Services Stahl, Germany)
MSC Gaildorf owns a 940 Sherpa and an AS 26 2-stroke 3-wheel mower for the maintenance of the motocross sports facility. The track goes up and down - with various steep slopes. For high area output on slopes, the Sherpa is just perfect - while the AS 26 2T excels on extreme slopes of the jump hills. These two machines also form the basis for our international events. We are happy to use rental equipment from AS-Motor for our large events in order to prepare the entire event area optimally within a very short time. We have had very positive experiences with the high-end machines 1040 YAK and 940 Sherpa RC from AS-Motor. Real professional machines for the most difficult areas and conditions.
– Sven Wolpert (Sports Director at MSC Gaildorf e.V. - the organiser of international motocross races, Germany)
We use AS 940 Sherpa Adventure as well as AS 63 2-stroke including double tyres for the maintenance of wind farms. With the machines we achieve an excellent mulching result, regardless of whether it's lush tall grass or scrub. The slope capability of both machines is impressive and convinced us completely during the demonstration that was offered to us before the purchase. Before buying the AS machines, we worked these areas with brushcutters. By using the AS 63 and AS 940 Sherpa, the area performance has improved significantly and the workload reduction is brilliant.
– Bernd Lehmann (Owner Bernd Lehmann BHG in Trebbin, Germany)
We use two AS 940 Sherpa for the green space maintenance of the open-air photovoltaic systems. Twice a year, we currently mulch around 200 hectares in this business area. The primary goal is to keep the solar modules free of shade. We mow under the solar tables, which means there is only about 90 centimetres of space between the turf and the tables in some places. Of course, the compact design and the low centre of gravity are very beneficial. In addition, the Sherpas with their all-wheel drive are very suitable for off-road use. Even if there is brushwood or high grass to be mulched, that is no problem, the Sherpas will stop nothing. With the AS mowers, we can get through anywhere.
– Peter Martini (Owner Martini Landscaping and Maintenance from Kehrig) read on
Mow stresssless with AS!
– Mario Balduzzi (Horticulturalists and landscape designer from Weil am Rhein)


Commercial landscaping

Performance on rough terrain, perfect cutting results and high efficiency are advantages AS-Motor machines provide to professional service providers.

Gardening and landscaping

AS-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.

Meadow orchards

Meadow 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.

Municipal maintenance

Caring for green areas in the civic environment involves a variety of tasks. From parks to roadside management, AS-Motor provides the correct tools to ensure both professional results and operator safety.


Viticulture, 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.

Athletic facilities and golf courses

Management of edge areas, embankments and lawns of athletic facilities are as important as the greens themselves.

Equestrian businesses

Equestrian areas require various forms of green care. Whether maintaining paddocks or lawns, AS-Motor offers tools to create the ideal equestrian environment.

Hunting and forestry

In 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 facilities

Leisure facilities must be visually appealing and expertly maintained. Whether parks or campsites, these areas are frequently used and thus require careful maintenance.

Road maintenance

Maintaining roadways often involves mowing high grass and slopes, two specialties of AS-Motor’s professional technology.

Solar parks

Efficiency is crucial to maintaining a profitable solar park. AS-Motor offers the ideal tools to properly maintain the green areas around and under solar panels.


AS-Motor offers professional technology for the maintenance of green spaces in and around public utility facilities.