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AS Motor AS 901 SM 90cm (36") Flail Mower (G90100001)

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Excl. Tax: £6,740.00 Incl. Tax: £8,088.00
Product code: 2931

Availability: In stock

Quick Overview:

AS Motor AS 901 SM 90cm (36") Flail Mower (G90100001)

Easy to use steering brake.
Rugged Flail mowing mechanism.
High work rate.
Lightweight and well balanced.

Please don’t hesitate to contact our Sales, Service or Parts teams on 01349 863854 if you have any questions.





AS 901 SM 90cm (36") Flail Mower


Professional flail mulcher with a high work rate

The AS 901 SM delivers high work rates and perfect handling whether on slopes, in dense growth or high grass. A Briggs & Stratton Vanguard Series 2-cylinder engine with 480 ccm displacement, up to 16.0 hp and an oil and fuel pump performs in tough conditions without the risk of engine damage. Propulsion occurs via a 5-speed manual transmission with reverse gear (1.8 km/h) that covers a speed range from 1.2–4.0 km/h. The rear axle differential is permanently locked, resulting in excellent traction even on wet grass. Twin tyres ensure even greater traction and stability while a vertically installed engine provides a low centre of gravity and balanced distribution of weight, at a total of 215 kg.

Operation is simple, convenient and safe

The AS 901 SM is conveniently operated via four levers. Individual wheels are controlled via a patented steering and brake clutch system by which light pressure on the wheel’s respective operating lever opens the limited slip differential; full pressure activates the brake on that wheel. Furthermore, the limited slip differential is permanently locked when in drive and the automatic parking brake engages as soon as the drive lever is released. This added safety feature stops the flail mower whether on a slope or level ground. Teflon-coated stainless steel Bowden cables ensure minimal expenditure of force. The result is safe, simple, and convenient operation.

Robust flail mowing unit

With a robust 90 cm wide flail mowing unit equipped with 26 pairs of Y-flails, the AS 901 SM is engineered for harsh conditions. The flail mower can cut grass up to 130 cm high at work rates reaching 3,600 m² per hour. The flail mowing unit is supported by pendulum bearings, delivering uniform mulching results by compensating for uneven terrain. The flails ride up and over obstacles, protecting both the engine and the operator from damage. A perforated impact guard provides additional safety.Cutting height can be adjusted to 6 levels from 10–100 mm, while the operating bar can be conveniently adjusted laterally and in height to match both the operator and the conditions.


The single wheel steering brake ensures precise, efficient machine control.


Generously-sized axle with maintenance-free bearings and 20 Y-flails.


Ideal for mowing and mulching rough terrain, even on slopes.


Stable, lightweight construction with double-skinned mower hood and rigid rectangular frame. Low, central centre of gravity for optimal stability on slopes.


Smooth, easy height adjustment for the flail cutting mechanism - from 10 to 100 mm using a 6-level locking lever.

Wide twin tyres with agricultural tread for excellent support and optimal traction on slopes and in ditches.

AS 901 SM - 16hp (max) B&S engine, Blade brake, 5 forward 1 reverse speed, (L)220 x (W)104 x (H)105 cm, 215kg.

Suitable for use on steep slopes, ditches, shrubbery and undergrowth- difficult tasks require special solutions when it comes to mowing and mulching.

AS 901- with it's 90 cm deck this features a powerful twin cylinder engine and 26 X hard wearing back to back fails that cut high meadow grass into a finr mulch.Fitted with twin wheels are standard. Excellent traction and braking performance, even or steep slopes.



Easy cutting height adjustment with lever.


5-gear manual transmission with limited slip differential and reverse gear for excellent propulsion, even on wet grass.



Guide bar can be adjusted laterally and in height to adapt to the size of each operator.




A perforated impact guard ensures a high level of operator safety.

Engine Power - 16HP, 480cc
Engine Make - Briggs & Stratton Vanguard V-Twin Engine
Professional/ Domestic/ Hire - Professional
Working Width - 90 cm
Cutting height (min/max) - Central 10-100 mm, 6 levels
Long Grass - Yes
Slope Mower - Yes
Overall Dimensions - (L) 220 x (W) 104 x (H) 105 cm
Weight - 215kg
HAV's - 2.5 (M/ S²)
Work rate - 4500 m²/h
Capacity - 3600 m²/h (max)
Blade Type - Steel housing with horizontal flail

For local deliveries in the Highland and the Isle of Skye we use our own delivery vehicles and are able to do a Pre-Delivery Inspection (PDI), test and hand over products within Highland’s postcode area.

Frank Nicol FGM Ltd are able to provide a comprehensive distribution service to the majority of the UK. Please note that due to the size and weights of these products they may incur a delivery charge over and above those displayed at the checkout. 

Out with the Highlands it would be advisable to contact us before placing your order to discuss any possible delivery charges.

Additional Information

Manufacturer AS Motor

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If you ever need any help please get in touch on the phone number below or shoot us an email and we'll get back to you ASAP.

Call us : 01349 863854

About Us

Frank Nicol Farm & Garden Machinery Ltd is located in DINGWALL offering a range of top quality Farm, Garden, Landscape Contractor Equipment, ATV's and related services.

We aim to provide a quality service to our customers in the area



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