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Hyundai Petrol Lawnmower 79cc 400mm Push Rotary | HYM400P

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  • Hyundai 79cc 4-stroke OHV petrol engine, providing easy starting with low fuel consumption.
  • With a 400mm cutting width it’s ideal for cutting small to medium sized lawns, up to approx. 20m x 20m.
  • Polypropylene rust free deck
  • Central height adjuster controlled by a single point lever - 6 cutting heights from 25mm to 75mm.
  • The easy to remove spacious 40L grass collector.
  • A soft grip handle increases comfort and the handles can also be folded down to make this lawn mower even more compact.
  • Full UK spares backup to maintain your machine for years to come.
  • Covered by Hyundai 3 year platinum warranty

In Stock

£174.99 exc. VAT £209.99 inc. VAT


Ideal for Small to Medium Sized Lawns

The HYM400P is a low maintenance petrol powered rotary lawnmower from Hyundai. A “no fuss” lawn mower ideally suited for small to medium sized lawns up to approx. 20m x 20m, the HYM400P has a cutting width of 400mm and is powered by a 79cc 4-stroke OHV petrol engine, delivering impressive cutting power, but also low levels of noise and fuel consumption to minimise disruption and keep running costs to a minimum.

Easy to Start

HYM400P easy start machine, with the option to place the recoil cord at the top of the handle which eliminates the need to bend down when starting it.

New Features

Single point height adjuster for all 4 wheels. With six cutting heights controlled from a central height adjustment lever ranges from 25mm for a smooth lawn to 75mm for cutting longer grass, the HYM400P puts you in control over the finish of your cut. With the lightweight and very durable polypropylene deck, your mower will remain free from rust and corrosion. It’s quick and easy to assemble out of the box, allowing you to be mowing in no time at all, and with low servicing requirements, it will provide years of reliable service.

Increased Usability

With a spacious quick release 40L polyester grass catcher bag, you will spend less time emptying the cuttings and more time mowing. Attaching and removing the collection bag couldn’t be simpler, and this allows you to dispose of the cuttings quickly and conveniently. For increased comfort, this petrol lawn mower features a soft grip handle, which reduces fatigue when used for long periods.


The OPC (Operator Presence Control) lever will ensure that the engine will not run if you let go of the handle. The handles also fold down over the main power unit, which makes this compact lawn mower easy to store in a garden shed, garage or even a vehicle.

Weighing just 19kg, this is one of the lightest petrol lawn mowers on the market, which is essential for hand push models to minimise fatigue and maximise manoeuvrability. It also means it can be lifted into the car boot with relative ease.

In The Box: HYM400P Petrol Lawnmower, 40L Grass Collector, Assembly Tools, Engine Oil & User Manual

Covered by Hyundai 3 year warranty.



Manufacturer Hyundai
Cutting Height (Inches/mm) 25mm to 75mm
Cutting Width (Inches/mm) 400mm
Deck Material Polypropylene
Dimensions (LxWxH mm) 1340 x 510 x 1000
Drive Push
Net Weight (Kg) 19.00
Engine Model Hyundai IC80V
Engine Size (cc/hp) 79cc
Engine Type 4-stroke OHV Single Cylinder petrol engine
Grass Catcher (L) 40L, Polyester Bag
Maximum Engine Speed (RPM) 3000.00
Number of Cutting Heights 6 Heights
Recommended Lawn Size (m2) 20x20m
Starting Method Recoil
Warranty 3 Year
Engine manufacturer Hyundai
Engine Oil 15w40
Fuel Unleaded petrol (no 2-stroke oil premix)
Assembly Required? Minimal Assembly Only
What's in the Box?
HYM400P Petrol Lawnmower, 40L Grass Collector, Assembly Tools & User Manual

 We provide FREE SHIPPING (terms apply) to mainland UK addresses on the majority of items.

Pricing for extended shipping areas like Northern Ireland, the Scottish Highlands and outlying Islands (the Outer Hebrides, Channel Islands, Isle of Man, Scilly Isles, etc) will incur a surcharge.

Please note: Very small items like spare parts will carry a cost for shipping, as will very large or heavy items like our 1500rpm diesel generators.

Feel free to contact us on 01437 700 123 or via live chat if you have any questions before ordering. 

If you place an order for an extended area, a small part or a large item which requires a postage fee we will contact you to discuss.

For full shipping and delivery terms and conditions, please click here.


Customer Reviews 8 item(s)

Great Lawnmower
Great Lawnmower
Review by D Klass / (Posted on 09/05/2019)
love it
love this mower
Review by a thomas / (Posted on 08/08/2018)
I purchased this as my old mower had broken so I thought I would try a hyundai one this time. And I am glad I did! I have got quite a small lawn so I thought I would choose this mower as it says it is ideal for small lawns. When it came in the box, it was very easy to assemble and I was quite quick at doing it. It runs so smoothly and is very easy to mow with. It has got a big grass bag which is very handy. So I would recommend this mower to anybody who has a small garden as this is such good value, and the quality is amazing, I don't get why it is so cheap! Plus it has a 3 year warranty!!
Review by Mel Geddis / (Posted on 19/07/2018)
ideal for my garden
I have got a small garden and this is perfect for it. It does the job and is easy starting which is very important for me. It's very light for a mower. Very easy to remove the collection bag to empty it.
Review by Taran / (Posted on 18/07/2018)
quality mower
Pleasantly surprised at the quality of this mower at such low price. Very powerful, does the job. No problems yet.
Review by Tom / (Posted on 16/07/2018)
I am very satisfied with my new lawnmower. This is the first petrol one I have ever owned, very simple to put together, very happy.
Review by Iona / (Posted on 26/06/2018)
Very lightweight and easy to start
Very pleased. Arrived quickly and was quite easy to assemble. Just add about half a litre of oil and petrol and your ready to go. Far better than my old electric mower.
Review by Rosemary Green / (Posted on 27/05/2018)
Bargain Hyundai mower
Very pleased with this lightweight mower. Next day delivery and started right away. Needs 400ml of engine oil.
Review by Peter Jones / (Posted on 27/05/2018)

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