AS 531 4T MK B 3 in 1 Mulching / Lawnmower With Collecting Bag

Price:£2,119.05 £2,119.04£2542.85 inc. vat

In Stock
  • 53cm (20.8″) Working Width
  • 30-80 mm Cutting Height
  • 3,4/4,6 kW (hp) Max Engine Power
  • Kawasaki Engine
  • 61kg Weight
  • 12 Month Warranty

Professional lawn mower with collection bag and added safety features

An absolute professional. The AS 531 4T MK B is a 3in1 lawn mower equipped with many extras and ideally suited for the care and maintenance of demanding green 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 4T MK B functions as a mulching mower or as a lawn mower, with or without a collection bag. A Honda GSV 190 ccm engine offers up to 3.8 kW (5.2 hp), making the AS 531 4T MK B an ideal choice for professional users.

The grass collection bag has 75 litres of capacity and a fill level indicator, with the bar arranged in the middle so it can be easily emptied.

The AS 531 4T MK B is the only machine in its class with a safety brake and limited slip differential. The parking brake activates as soon as the blade clutch lever is released 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 bring the blade to a standstill without switching off and restarting the engine, for example, when emptying the collection bag. A pivoting handlebar allows the AS 531 4T 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.

A professional lawn mower – different from the rest

Unique features of the AS 531 4T MK B include:

  • automatic differential lock
  • automatic parking brake
  • open V-handlebar with VibrationProtect

Other features:

  • 3-litre tank with reserve function
  • 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
Additional information
Lawn Mower Type

Walk Behind Lawn Mower

Machine Category

Lawn Mowers

Machine Class


Machine Power Type


Manual or self propelled?


Mower Use


Which brand to view

AS Motor

Technical Info

Technical Info

Display SKU G53100112
Manufacturer AS Motor
Model AS 531 4T MK
Engine Power 5.2 hp (max )
Engine Make Honda
Professional/ Domestic/ Hire Professional
Engine Type 4 Stroke / 2 Stroke 4 Stroke
Transmission Type Variable Speed Drive
Cutting width 53 cm
Cutting height (min/max) Wheel-specific 30-80 mm, 6 levels
Long Grass Yes
Slope Mower Yes
Collection /Discharge /Mulch Rear discharge / Collection (75Litres)
Overall Dimensions (L) 164 x (W) 52 x (H) 99 cm
Weight 51kg
HAV’s 2.5 (M/S²)
Safety Brake Blade Brake
Blade Clutch Yes
Cutting height adjustment 30 – 80 , Single-wheel, 6x
Work rate 2300 m²/h (max)
Capacity 2,300 m²/h


Register your new AS-Motor mower here to receive a warranty extension of 3 months from the purchase date.



Home Delivery is available on nearly all our products

Smaller Items
Chainsaws, hedge trimmers, cordless machines, blowers etc.
Pretty much all of these products are available for national delivery. These are delivered in a box for self-assembly
We have a help and advice page where you can find help on how to assemble your product.

Medium Items
Lawn mowers, Strimmers, pole machines, tillers etc.
Most of these machines are available for national delivery for self-assembly but some can only arrive on our own transport, fully assembled and ready to use.

If they arrive on our own transport, our member of staff will talk you through how the product works if required.

Larger Items
Ride on Mowers, ATVs and Larger items
These machines will be delivered using our own transport and our own staff to make sure you receive all the information and instruction you require. The product will be fully assembled and ready to use.

*Only Available for Delivery within these postcodes –
EX – 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 31, 32, 33, 34, 35, 36, 37, 38, 39.
TA – 1, 2, 3, 4, 5, 6, 21, 22, 23, 24.
PL – 15, 16, 17, 18, 19, 20, 32,35.
TQ – 11, 12, 13,14.

If you live outside of these areas, please do not hesitate to contact us to discuss your options.

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