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Home » Machinery » Mowers - Petrol » AS 531 21" Pro 2T VS 3in1 Mower

AS 531 21" Pro 2T VS 3in1 Mower

RRP £2997.58

Availability: Coming Soon, Please Pre-Order


Carriage: Free of charge delivery to UK Mainland, this does exclude Islands and the Scottish Highlands, to check please call or click here for more information...

Power: 2-Stroke Petrol (4 Stroke model pictured)

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Free 1 Litre of WGM 10W40 Oil with this machine


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.


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.

Automatic limited slip differential - 100% limited slip differential activates in drive, enabling better handling.

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.

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.


Model AS 531 2T MK

Cutting width 53 cm

Maximum grass height 50 cm

Engine manufacturer AS Motor

Engine designation AS165ES

Engine type 2-stroke

Maximum power 4,4/6,0 kW (hp)

Rated power 2,8/3,8 kW (hp)

Rated speed 2800 rpm

Tank capacity 3L

Drive Rear-wheel drive

Number of gears Variable

Max. speed 4,5 km/h

Automatic parking brake Yes 

Limited-slip differential Yes

Brake Yes

Blade clutch Yes

Mulch function Standard 

Cutting height 30 - 80 mm

Cutting height adjustment Per wheel

Number of levels 6

Dimension L/W/H 164x59x99 cm

Weight 57 kg


Engine-Oils   Aspen



Spares Department



In 1969



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* Whist we try to keep our stock availability correct it is not always possible, if in doubt please call to check prior to placing your order. 


** Free delivery is not applicable on all items. Smaller items, some medium items such as spas, larger ride-on machines outside of our local area and deliveries to the highlands and Islands, will have carriage applied.