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Mountfield SP46 Self-Propelled Petrol Lawnmower

Original price was: £339.00.Current price is: £299.00.

  • A quality machine from a British brand at an undeniably attractive price point
  • Mulching mode for a neat finish and naturally nourished turf
  • Clean running and fuel efficient OHV engine from Stiga
  • Easy-pull recoil starter
  • Effort saving self-propulsion
  • Simple single-lever height of cut adjustment
  • Space saving collapsible handlebars
  • Roomy catcher works to reduce downtime caused by emptying stops
  • ‘Collector full’ indicator prevents overfilling and blockages
  • Steel deck for durability and impact resistance
  • Extended five-year manufacturer’s warranty

4 in stock

Mountfield SP46
Mountfield SP46 Self-Propelled Petrol Lawnmower £339.00 Original price was: £339.00.£299.00Current price is: £299.00.
Only 4 items left in stock!
Mountfield SP46
Mountfield SP46 Self-Propelled Petrol Lawnmower
£339.00 Original price was: £339.00.£299.00Current price is: £299.00.
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Mountfield SP46 Self-Propelled Petrol Lawnmower

This classic petrol rotary mower from leading UK brand, Mountfield, might be very attractively priced, but it nevertheless offers great versatility, solid build-quality and numerous features designed to make your gardening life easier!

Key amongst those convenience features is its self-propelled drive – you’ll be able to breeze up slopes and whizz across rough, tussocky grass without tiring yourself out.

The Mountfield SP46 Self-Propelled Petrol Lawnmower is driven by a STIGA ST 140 OHV Autochoke engine; a compact 139cc power pack that develops an impressive 3hp, and which utilises economy optimising and emission cutting OHV (overhead-valve) technology.

It’s based around a CP1 steel chassis, so rugged durability and a lengthy service life are assured, and it boasts single rather than multi lever cutting-height adjustment, so the pre-mowing set-up couldn’t be easier.

The SP46 is both collection and mulch capable, with the latter option ideal for well maintained short-grass areas, and providing your lawn with natural nourishment from the rapidly decomposing mulch.

The roomy 60-litre catcher on the Mountfield SP46 Self-Propelled Petrol Lawnmower model is made from canvas for space saving storage, and benefits from a blockage and spillage preventing ‘bag full’ indicator.

A 46cm cut makes the Mountfield SP46 a good match for lawns up to 800m2.

Click here for four-stroke engine oil.

It should be noted that Mountfield petrol lawnmowers are covered by an extended five-year manufacturer’s warranty*.

* Ts & Cs apply – to maintain a valid warranty, the machine must be serviced annually from year two onwards by an authorised dealer

Additional information



Engine Make


Engine Model

ST 140 Autochoke OHV

Engine Capacity


Engine Power

2.9hp / 2.2kW @ 2900rpm

Engine Starting System


Engine Fuel-Tank Capacity

0.75 Litres


Self Propelled

Cutting Width


Cutting Heights

22-65 (6 Positions)

Height Adjustment

Single Lever

Grass Collector

60 Litres – Canvas with Hard Top

‘Grassbag Full’ Indicator






Cutting Deck



Foldable / Adjustable with Soft Grip


Front 200mm / Rear 200mm with Grooved Tread

Safety Features

Operator Presence Control

Lawn Size

Up to 800m2

Product Weight



5 Years


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Shipping Info

Shipping Info

If you’re buying a boxed product, we aim to get your order delivered next working day – UK mainland where possible.

If you’re buying a tractor or ride-on mower – a special order item – it could be slightly longer, as we need to PDI the machine.

We do try and van-deliver these machines if we can, as this gives us a chance to demonstrate the product, and to ensure you’re happy and confident with your purchase.

If we can’t van-deliver your machine, as you’re out of our local delivery area, the tractor will be sent on a pallet via a courage company. They will then contact you directly to book a specific day and time that suits you.