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The UK's Number 1 Online Garden Machinery Superstore
01263 820202

Delivery is free of charge to most of the UK mainland* for orders over £50.00**.

* Scottish Highlands, Offshore UK & Republic of Ireland

If you're ordering to the Scottish Highlands, an offshore UK address or to the Republic of Ireland additional charges may apply. To receive a quote for these costs along with estimated delivery times, please contact us stating your address and the items you would like to order. You can still place your order through the website without receiving a quote but we will be in touch after the order has been placed to confirm delivery costs.

*The following Scottish and offshore postcodes may incur an additional delivery charge:

  • AB
  • BT
  • DD
  • DG
  • EH
  • FK
  • G
  • GY
  • HS
  • IM
  • IV
  • JE
  • KA
  • KW
  • KY
  • ML
  • PA
  • PH
  • PO
  • TD
  • ZE

**Orders under £50.00 will incur a shipping charge of £5.95. Our full delivery policy is here.

If your order is subject to any additional shipping charges, we will contact you (via email or telephone) prior to processing your payment.

For more information call our sales team on 01263 820202

Please Read Carefully - this product is collect only...

STIHL and VIKING products are considered to be some of the best quality outdoor power tools available to homeowner, landowner and professional users. To ensure that you get the very best level of service, this product must be handed-over to you at the point of sale. Stihl believe that the best service to customers is achieved when the customer has face-to-face contact with their local Stihl dealer. This allows for the end user to receive the proper tool for the job, the right instruction and the peace of mind they can use the tool safely.

To purchase & collect this product choose "ADD TO BASKET". You can choose quantities on next page.

Alternatively, we suggest the following products (all with free delivery*)

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* mainland UK only - Some Scottish & offshore postcodes may incur a delivery charge (please call for details).

Mountfield S421HP Lawn Mower

Buy this lawn mower and receive a FREE Greenthumb lawn treatment service* & bottle 4-stroke oil (600ml)
Guaranteed Safe Checkout
Extra ImageFREE EXPRESS DELIVERY (usually next working day, if ordered by 12pm)Check postcode
RRP £249.00 £219.00

Save £30.00 (12%)

In stock

Buying Options

Save big with our exclusive Mountfield lawnmower bundle deals!
Choose your bundle:
  • Mountfield S421HP + Bottle Engine Oil + Greenthumb Lawn Care Service + FREE Express Delivery BEST VALUE

    Mountfield S421HP Lawn Mower
    +
    4-Stroke Engine Oil (0.6 litre)
    +
    Greenthumb Lawn Care Service

    £219.00

  • Hand Pushed
  • 41cm/16" cutting width
  • Recoil start
  • Steel deck
  • 60 litre grass bag
  • Mountfield RSC100 OHV engine
  • Mulch plug included
  • Ideal for small/medium sized gardens

See full description

Not what you are looking for? View all lawn mowers - petrol lawn mowers
CALL US NOW ON 01263 820202 for more information
Need help deciding? Take a look at our lawn mower buyer's guide
Product Description Specifications Delivery Need Help? About Brand

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Customer Reviews

Good quality mower for a low price - Review by James Hunter
Features
Build Quality
Ease of Use
Value for Money
I bought this to replace a long serving Mountfield that had finally given up the ghost when it blew out after hitting a massive stone. So far I'm not disappointed. For a low cost, basic feature, petrol mower the build quality is pretty good, better than quite a few cheap mowers I've known. It starts first time and the cutting height is easily adjustable. The engine is chunky enough not to cut out frequently when tested in long damp grass. I cut a lot of rough grass on rough ground, as well a decent quality lawn turf, so the most important features of any mower for me are manoeuvrability and the strength of the handle and its attachment to the engine chassis. I've broken off many a handle over the years, particularly using cheap Champion mowers. The Handle on this Mountfield looks to be reasonably strongly attached, the fixing nuts don't loosen quickly and can be easily tightened when they do. Manoeuvrablity is also good - I prefer to sacrifice a bit of cutting width for a lighter mower weight, particularly when cutting over sloping or uneven ground. All in all it's pretty good. (Posted on 30/06/2015)

Write Your Own Review

You're reviewing: Mountfield S421HP Lawn Mower

How do you rate this product? *

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Features
Build Quality
Ease of Use
Value for Money

Great service and prompt delivery

I was unsure which lawnmower to buy so I rang the company and spoke to Aron who gave me some great advice. Just over 24 hours later the mower arrived. The lawn is now mowed much to my satisfaction. It wasn't the cheapest of mowers (I've bought cars for less!) but it really is tip top ~ just what I needed. Thanks." 13th April 2017 by Anon

Cut above the rest!

Bought a Bosch electric mower from this Company. Delivered within 48 hrs. Even though it was a Bank Holiday weekend! Amazing service. Slight problem with wrong charger in box was promptly put right. Thank you Stephanie and all at Just Lawnmowers." 20th April 2017 by Anon

Good honest helpful Company

Hi, Just made my first purchase from justlawnmowers and I have to say that they are most helpful and generous in their quick responses with special thanks to Stephanie. I await my delivery and have every confidence that this is a good honest Company to deal with, which is very refreshing. Cant wait to get my machine!" 7th June 2017 by Ron, Hants