Hyundai HYM510SP 4-Stroke Petrol Lawnmower 173CC Self Propelled 51cm/20 inch Cutting Width


£319.99 £269.99

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Product code: 218965  | Model: HYM510SP
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  • Standard Delivery to most of UK Mainland This product is only available for standard delivery: FREE Please note this item is delivered separately by our approved suppliers.
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he Hyundai HYM510SP lawnmower is a self-propelled mower powered by a Hyundai IC175V 173cc OHV 4-stroke Euro 2 low emission, low maintenance and extremely economical petrol engine.

The cutting width of 51cm, it is ideal for medium to large size lawns and gardens. The cutting height can be adjusted to six positions with a single height adjusting lever, ranging from 25mm to 75mm.

Thanks to the CDI ignition system the engine is easily started and the drive to the large rear wheels is controlled from the rear mounted handle control. The enclosed drive belt can be easily accessed through the new removable maintenance cover.

The extra large 70-litre grass collector features a high airflow plastic top with a level indicator to ensure maximum grass pickup and can be easily emptied. After use, the deck can be cleaned underneath by running the machine with the garden hose connected to the deck cleaning connection.

The HYM510SP includes OPC (Operator Presence Control) technology that ensures the engine will not run if you let go of the handle. For easy storing the handles can fold down over the lawn mower making storage compact, ideal for the garden shed, garage or transporting within a vehicle.

The soft grip handles can be folded forward to reduce space in storage and transport. The HYM510SP comes with mulching plug, side discharge chute and tools. Fitted with a hard wearing steel deck for extended long life.

Features and Benefits

  • Adjustable – Easily adjust the cutting height between 25 and 75mm to suit your garden.
  • Large collection bag – Spend more time mowing and less time emptying.
  • Efficient – The 4-stroke engine boasts improved torque and reduced noise/air pollution.
  • Foldable and compact – For easy storing the handles can fold down over the lawn mower.


  • 5HP Hyundai OHV 4-stroke 173cc Euro II engine
  • Cutting Width: 25mm to 75mm 
  • Cutting Height: 25mm to 75mm 
  • Recommended Lawn Size: Medium - Large
  • Deck Material: Steel
  • Drive: Self Propelled
  • Grass Catcher: 70L
  • Full bag indicator
  • No. Of Cutting Heights 6
  • Engine Model: IC175V
  • Engine Size (cc/hp): 173
  • Engine Type: 4 Stroke Petrol
  • Starting Method: Recoil
  • Dimensions: L 1050 x W 550 x H 1580mm
  • Dry Weight: 39Kg
  • Warranty: 3 Years

What's Included

  • HYM510SP Petrol Lawnmower
  • 70L Hard top Polyester Grass Bag
  • 4 Stroke Petrol Engine Oil
  • Mulching Plug
  • User Manual


We aim to deliver items that are currently in stock within five (5) working days (excluding Bank Holidays) after the date the order is placed.

Working days are defined as Monday-Friday 8am-7pm inclusive, excluding Saturday, Sunday and Public Holidays.

Please note that during particularly busy periods, it may take a little longer to receive your delivery and our carrier may attempt to deliver to you on a Saturday.


  Standard Next Day Named Day Saturday
Mainland UK (ex Isle of Wight) £3.95 £4.95 £4.95 £7.95
Highlands & Scottish Isles £11.95 N/A N/A N/A
Northern Ireland & Isles £11.95 N/A N/A N/A
Mainland UK (ex Isle of Wight):  
Standard: £3.95
Next Day: £4.95
Named Day: £4.95
Saturday: £7.95
Highlands & Scottish Isles:  
Standard: £11.95
Next Day: N/A
Named Day: N/A
Saturday: N/A
Northern Ireland & Isles:  
Standard: £11.95
Next Day: N/A
Named Day: N/A
Saturday: N/A

Next Day service will be available for orders placed on the website from Monday to Thursday before 3pm. Typical delivery time windows: Standard, Next Day, Named Day - 08:00 - 16:00

Our Saturday service is available for orders placed before Friday 3pm. Typical delivery time window: Saturday - 08:00 - 18:00


  Next Day Named Day Saturday
Mainland UK (ex Isle of Wight) £15.00 £15.00 £25.00
Mainland UK (ex Isle of Wight):  
Next Day: £15.00
Named Day: £15.00
Saturday: £25.00

Next Day service will be available for orders placed on the website from Monday to Thursday before 3pm. Typical delivery time windows: Next Day, Named Day - 08:00 - 18:00

Our Saturday service is available for orders placed before Friday 3pm. Typical delivery time window: Saturday - 08:00 - 18:00

Unfortunately, we currently cannot deliver bulky products to the following locations: Highlands & Scottish Isles, Isle of Man & Isles of Scilly, Northern Ireland, Isle of Wight


Some of the items sold on our website are delivered direct from our suppliers; this is clearly indicated on the relevant product page. Lead times for these items do vary from 5 working days up to 28 days. Please be aware that we can only arrange for delivery of these products to mainland UK addresses. Vendor direct products are delivered for FREE.


Returning an item couldn't be simpler with our 30 day money back guarantee:

Most of our products are covered by our 30 day no quibble money-back-guarantee as long as they are with their original packaging, unused and in a resaleable condition.

This promise exceeds your legal rights under the Consumer Contracts Regulations

Products not covered by our 30 day money-back-guarantee

  1. Large Kitchen Appliances (including washing machines, cookers, dishwashers, fridge freezers, hobs, cooker hoods and dryers)
  2. Outdoor Garden Furniture
  3. Indoor Furniture
  4. Products delivered direct from our approved suppliers (this is highlighted on the product detail page)

To return an item, you can either:

  1. Visit your nearest store with your receipt and we’ll give you a refund or exchange.
  2. Download a returns form or use the form on your delivery and returns note, enclosed with your goods. We recommend you obtain proof of posting when returning your items.
  3. Email or call our Customer Services team at [email protected] or 0333 103 6677 and they will provide you with returns instructions.

See our Delivery and Returns section for more information.

Ratings & Reviews


3 Reviews

4.3 / 5 Quality

4.7 / 5 Value

Rating snapshot
  • 5 / 5Quality

    5 / 5Value

    10 July 2019

    A beast!

    Bought this about a month ago after moving to house with a massive garden and the old electric one not being suitable. I was interested in the larger cutting size and the large grass collector and for the price this one was ideal and ticked all the boxes. I looked at the electric start one but it's quite a bit more expensive - am glad I didn't pay it as this is so easy to start! The slightest pull on the pull start and away it goes! No effort really. You can't compare it to my electric mower really - but it would take 4 hours to do the lawn and now only takes 1! This is due to the larger cutting area, the speed at which you can go forward (its self propelled) and it still easily cut, and the fact I don't have to empty the collector as many times. Took me a few goes to get used to the self propelled expect of it - but I would highly recommend it, especially if you have got gradients like I have, and due to the shear size of it! I particular like the hose pipe connector to clean the under carriage - very simple, connect the hose to the connector, turn the water on and it does the job - as you can't really turn a petrol mower on its side unless you empty it of fuel. Handles come off for easy storage and it seems to last ages on fuel. Pros - massive cutting area, easy start, self propelled, large grass box, easy clean. Cons - it's massive! And heavy (you don't notice the weight whilst mowing though SP) but this is to be as expected and is the size I wanted. Storage wise it takes it more room than the electric one but is a good compromise compared to a sit on. Buy it!

  • 4 / 5Quality

    4 / 5Value

    24 June 2019

    Good overall

    After incorrect delivery date and timings the machine was delivered without prior warning. Relatively easy to assemble but much clearer instructions required. On the one occasion I have used it so far it was easy to operate and gave a satisfactory cut.

  • 4 / 5Quality

    5 / 5Value

    19 June 2019

    Cuts very well

    First cut of my large garden completed. When pushing the start button the mower fires up immediately. It it cuts very well too and have tried grass collection and the side discharge. Both worked well. The drive gearing is a bit all or nothing with no gradual pick up in speed. It can do wheelies if you're not careful but this fierceness may ease of with use. Overall very happy.