AS 531 2T ES MK B

2-stroke mower for maximum safety on slopes

The pro among lawn mowers. This 3-in-1 model has multiple advantages, starting with its ability to perform in demanding areas such as steep terrain and confined spaces. A mulch kit can be mounted and dismounted without tools, a feature that now comes as standard equipment. Thus, the AS 531 2T ES MK B functions as a mulching mower or as a lawn mower, with or without a collection bag— in other words, 3in1.
The AS 531 2T ES MK B is equipped with the world’s only 2-stroke engine that meets the requirements stipulated by the EU Emissions Directive 97/68/EC. The AS 2-stroke engine maintains engine lubrication regardless of position, enabling work on inclines of up to more than 40 degrees and more without the risk of engine damage. In addition, the AS 2-stroke engine is factory-equipped with an EasyStart function; the CDI digital ignition system cuts the rpms required to start in half. Even in wet grass, the 2-stroke engine’s high torque ensures all of it ends up in the collection bag, which has a capacity of 75 litres and a fill level indicator.
The AS 531 2T ES MK B is the only machine in its class with a safety brake and limited slip differential. As soon as the blade clutch lever is released, the parking brake activates and the mower comes to a standstill, regardless of how steep the slope. This function maximizes user safety.
The mower is easily operated with an open V-shape handlebar developed by AS-Motor: the left hand regulates speed from 3.0–4.5 km/h while the machine is in motion. The right hand steers and activates the blade clutch, the traction drive, and the parking brake. The blade clutch makes it possible to stop the blade without switching off and restarting the engine, for example, when emptying the collection bag. A pivoting handlebar allows the AS 531 2T ES MK B to be used comfortably along house walls and shrubbery or when mowing next to parked cars. The handlebar has rubber-bearing support and VibrationProtect vibration damping that reduces hand-arm vibration to a minimum. In addition, optimal weight distribution ensures ergonomic handling and fatigue-free work.

An exceptional lawnmower

The AS 531 2T ES MK B offers more to the professional operator. The machine’s unique features include:

  • position-independent 2-stroke engine, suitable for slopes up to 40 degrees
  • automatic differential lock
  • automatic parking brake
  • open V-handlebar with VibrationProtect

Other features:

  • mono bar for easy emptying of the collection basket
  • stable and weight-optimised steel frame
  • spring steel axle
  • individual wheel cutting-height adjustment
  • third crankshaft bearing and friction clutch close to the blade

Product advantages

Engine suitable for slopes

The world's only AS 2-stroke engine with EasyStart has position-independent lubrication, ensuring safe operation even on steep slopes.

Automatic parking brake (AS 531)

When the drive lever is released, the parking brake automatically engages and the machine stops, whether on a slope or level ground.

Special feature: automatic locking differential

Only when the drive wheel is spinning, the differential lock activates automatically. Otherwise, it is inactive and the machine is freely controllable.

Simple operating concept

Operation of parking brake, blade engagement, limited slip differential, drive function, speed adaptation, all with just three levers.

Variator

The variable speed adjustment allows optimal performance in all work conditions.

Weight distribution

Optimal weight distribution for ergonomic handling and fatigue-free work.

Mono bar with V-handlebar

Easy emptying of the collection basket through single-bar design. Ergonomic V-handlebar, laterally adjustable.

Product details

3in1 function

Factory-equipped with an easy-to-mount mulch kit. Mow with collection bag, rear discharge or mulch.

Vibration damping

VibrationProtect and the rubber-bearing supported V-handlebar reduce vibration to a minimum.

Shock absorption of the front axle

Shock absorption through spring-steel axle and rubber buffer.

Special front wheels

Double ball-bearing supported, smooth-running wheels press down very little grass.

Technical Data

cutting width 53 cm
maximum grass height 50 cm
engine manufacturer AS-Motor
engine designation AS 165 ES
engine, 4-stroke / 2-stroke /
maximum power 4,4/6,0 kW (hp)
rated power 2,8/3,8 kW (hp)
rated speed 2800 rpm
tank capacity 3 l
rear-wheel drive / AWD /
number of gears Vario
max. speed 4,5 km/h
automatic parking brake
limited-slip differential
brake
blade clutch
mulch function, standard / optional /
cutting height 30 - 80 mm
cutting height adjustment, central/per axle/per wheel / /
cutting height adjustment, number of levels 6
dimension L/W/H 164x59x99 cm
weight 57 kg
Changes in technology, equipment and price are reserved. Of information or illustrations no claims can be derived.

Accessories

Operating hour meter

Documentation of work hours.

Tilt meter

Convenient display of slope incline.

AS 2-stroke oil "Titan 2T"

For an optimal environmentally-friendly mixing ratio. Recommended for all AS 2-stroke engines.

Customer reviews

The AS 531 performs incredible work. Even in wet conditions the large collection bag is completely filled, and slopes and hills are no problem for the 2-stroke engine.
– Wolfgang Klaiber (AS-Motor product specialist, Germany)
I save an incredible amount of time by not needing to restart the device each time I empty the collection bag or cross a garden path… I am satisfied with the mowing result and collection of the AS 531, even in wet grass… The service of AS-Motor is as faultless and prompt as the device itself, meaning my mower is operational again as quickly as possible.
– Michael Hiller (owner of Apollo Grünpflege in Oppenweiler, Germany)

Applications

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.

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.

Road maintenance

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

Utilities

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

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.

Private customers

When 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.

Athletic facilities and golf courses

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