AS 920 Sherpa 2WD B&S
Categories
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Mulching is a process by which grass cuttings are shredded several times into a fine mulch, which then remains on the surface as natural fertiliser. Special mulching blades with a double cutting plane and a circular mulching unit are used on ornamental lawns, while cross-blade systems or flail mowers are primarily used in high grass.
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Ornamental lawns in both private gardens and public facilities can be maintained with either mulching or collecting mowers. When mulching, the finely-shredded cuttings remain on the surface as natural fertiliser, while collection bags help the operator transport cuttings to a disposal point. Lawns are usually mowed once per week to a cutting height of 40–50 mm, from a maximum height of 15 cm.
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Flower meadows are structurally rich habitats that are extremely important for insects, wild bees, and species that depend on flowers. The key is not to mow frequently, but to cut at the right time. Before the flowering phase, the vegetation can quickly reach heights of 30–40 cm. After that, maintenance is carried out at longer intervals, usually once or twice a year. This form of extensive use requires machines that can safely cut tall, heterogeneous vegetation without putting unnecessary strain on the area. Clean cuts, controlled deposition, and an adapted driving style are essential for preserving plant populations and enabling regeneration.
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Extensively used meadows such as orchards, compensation areas, or roadside greenery are deliberately mowed only once or twice a year. The vegetation reaches heights of 60 to over 100 cm and forms dense, structurally rich stands. This form of maintenance serves to keep the area open and suppress woody plants, not to maintain the lawn. Machines with high throughput, uniform cutting performance, and controlled deposition of the cut material are required. This is the only way to efficiently manage large amounts of biomass without overloading the area or damaging the soil and vegetation.
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Without maintenance, open areas quickly become overgrown with blackberries, clematis, and young trees. In young forests, reforestation areas, or Christmas tree plantations, targeted brush clearing is necessary to secure the desired structures and reduce competition. It is crucial to use maintenance methods that intervene selectively and do not destroy large areas. Mechanical flail mowing technology makes it possible to remove woody growth and vigorous shrubs without unnecessarily damaging the soil structure and root space. This ensures that areas remain usable and ecologically stable in the long term.
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During the mowing season, professional operators often run their machines 5 days per week, 8 hours per day. AS-Motor’s machines are unbeatable in terms of quality, durability and professional work results. Additional advantages include low weight, lashing points and compact transport dimensions.
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Animal burrows, anthills, mole hills and water channels cause uneven terrain. Several AS-Motor machines have high ground clearance, all-wheel drive and limited slip differential, along with appropriately studded field tyres, for uneven terrain.
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AS-Motor engineers machines with high ground clearance, steep ramp angles, low overall weight, optimal weight distribution and a low centre of gravity to perform on slopes.
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All-wheel drive not only ensures performance on inclines over 30 degrees, but also a high level of safety for travel downhill. All-wheel drive delivers propulsion in wet conditions and on uneven terrain – even if the wheels of one axle no longer have traction.
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Remote controlled devices make the mowing of extreme slopes possible. This technology also allows the operator to mow at a safe distance from dust, wasps, ticks and other hazards.
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The AS 50’s high work rate delivers efficient weed removal on large and uneven surfaces such as a car parks, commercial areas and paths. A collection bag eliminates the need for sweeping and surface cleaning.
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Cobblestones and uneven paved areas can be treated for weeds, without the use of chemicals, using mechanical methods. The agile AS 30 is designed for work close to edges, water inlet channels, manholes and on traffic islands with posts and signs.
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Ecological mowing and extensive land management focus on reduced, targeted interventions instead of blanket mowing. Cutting heights, timing, and maintenance intervals are based on vegetation development and site conditions, not on maximum area coverage. Sub-areas are mowed on a rotating basis, while others are deliberately left untouched. This creates varying growth heights, refuges, and stable structures on extensive meadows, compensation areas, municipal green spaces, and in landscape management. Technology is used for control, not intensification.
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Fast and agile ride-on mower with limited slip differential for moderate inclines
The AS 920 Sherpa 2WD boasts work rates reaching 9,450 m² per hour, thanks to its 90 cm cutting width and a high-power Briggs & Stratton 2-cylinder engine with 724 ccm displacement and up to 27 hp. The closed, surfing mower deck gives way upward which protects both the blade and the turf, as the blade will not come into contact with the ground. Moreover, the shape of the mower deck allows flush, close-to-the-edge mowing. The AS 920 Sherpa 2WD has a turning radius of just 65 cm.
The AS 920 Sherpa 2WD’s cross-blade system 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. Cutting heights can be adjusted to 5 levels from 35–135 cm with an optional mulch kit available for even finer mulching results.
Convenient drive operation with added safety
Hydrostatic transmission allows the precise adaptation of speed to match the terrain, reaching 10.5 km/h and 8.2 km/h in reverse. Just one lever controls the drive, brake and parking functions for easy operation, while limited slip differential can be activated for excellent propulsion and traction when needed.
Comfort meets stability
With a highly stable tubular frame, the AS 920 Sherpa 2WD 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.
Designed for continuous operation
Two separate ventilation circuits for the engine and hydrostatic transmission prevent overheating: 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 ensures a long service life.
New model year 2024
In the future, the 2WD models of the Sherpa series will appear in new splendor. Visually, the new Sherpa models are even more attractive with a new paint finish, an additional front panel and the newly designed decals. But the legendary tallgrass mowers also offer a number of technical innovations.
In addition to more volume (17 liters), the Sherpas’ new fuel tank offers a larger tank opening and a level indicator as standard. The protective cloth between the engine and seat can now be easily opened for service activities using a magnetic catch. Accessibility to the engine, for example when changing the oil, is significantly improved. The locking mechanism of the folding handle has been redesigned and prevents elbow bumping.
Product advantages
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.
Length-adjustable driver seat, innovative seat suspension and ergonomic sitting position provide comfort for tall operators during long work periods.
The turning radius of just 65 cm provides agility even on difficult terrain.
High stability and torsional rigidity with heavy load.
Performs on moderate inclines thanks to a low weight and low centre of gravity.
Easy adaptation of the speed to every terrain with integrated, mechanical parking brake in the drive lever.
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
Accessories
Insect scare device
The AS-Motor Insect Scare Device is an innovative mowing attachment that protects pollinators and small wildlife. Scientifically tested to increase insect escape rates, it ensures sustainable mowing while maintaining efficiency. Designed for durability, adaptability, and easy integration with AS-Motor professional mowers.
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Trailer
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)
For connecting the AS trailer.
Snow blade
Width: 1107 mm, height: 348 mm. Adjustable on both sides.
Mulch kit (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.
Twin wheels (Sherpa)(Old)
One pair (2x2) of rear twin tyres with extreme tread pattern for highest traction.
Tilt meter
Convenient display of slope incline.
Steering knob
Facilitates one-handed steering and maoeuvring on level terrain.
Liquide tyre sealant “Plattfuss-Stop”
Reduces the failure times due to flat tyres (20 litres); can only be used in conjunction with the pump
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Pump for tyre sealant
For filling the tyre sealant "Plattfuss-Stop"; only necessary in conjunction with 20 l container
Spacer Sherpa
Spacer for replacing the upper mulching blade. Advantageous in fibrous vegetation or for higher mowing speed in dense vegetation.
LED headlights
Two high power 18W LED headlights, with mount, switch and cable.







