Mountfield S421R HP Petrol Roller Mower (Hand Propelled)

The Mountfield S421R HP is a great entry level Roller mower. It’s Hand Propelled (Push) Rear Roller can provide a beautiful stripe on any lawn.


£349.00 inc. VAT

Usually dispatched within 3-7 days

Central Distribution Stock

This means we have no stock "on-site" but there is stock in the UK. These order are typically dispatched within 3-7 days however this can vary during peak season. Usually delivered within 7-10 working days.

UK Mainland Delivery: *FREE Over £200 Inc VAT (Excluding Ride On's)
Additional charges apply for certain postcodes (i.e. Scottish Highlands etc.). Prices calculated at checkout based on weight / size / address.

European & Overseas Delivery:
Our integrated IOSS system applies the correct Tax for your Country (for orders under €150) for faster customs clearance. All orders over this value may incur additional charges at customs.

Click & Collect:
Our warehouse staff they will notify you when your order is ready to collect from our depot (NE10). New Machinery purchases will be built-up, fuelled & oiled (as required) & tuned by our workshop; Ready to Mow!

Local Delivery: *FREE Over £250 Inc VAT (New Machinery Only)
For customers within 25 miles from our depot (NE10), we will delivery your new machine once it's built-up, fuelled & oiled (as required) & tuned by our workshop; Ready to Mow! Average 2-3 day lead time.

Low Stock - Hurry While Stock Lasts


The Mountfield S421R HP Petrol Roller Mower is Hand Propelled (Push) with a 41cm / 16″ Cutting Width. It’s powered by the ultra-reliable Stiga ST120 (123cc) engine which features “Auto-Choke” making it very simple & easy to start.

It’s main feature is it’s Rear Roller that not only creates a classic striped finish, but will cut right over the edge of flower borders. There’s also 5 different cutting heights to choose from ranging from 20mm to 70mm. This can be changed using 1 simple lever. You’ll be wondering how you achieved such a beautiful lawn with so much ease!

Grass clippings are collected in it’s large 55-litre canvas grass bag. There’s even a handy indicator to let you know when it’s full.

In addition, this stripe-making mower only weighs 30kg and features quick folding handles making it easy to store.

Backed by a 5 Year Warranty, the Mountfield S421RHP is superb for small to medium-sized lawns (20m x 20m) which are flat.

Mountfield Lawn Mowers

Have a question about this product? Simply use the Contact Us Form and we’ll get back to you as soon as possible. Alternatively, just give us a call on 0191 4692020.


Engine BrandMountfield
Engine TypeST120 OHV
Engine Capacity123cc
Net Power Output1.9kW @ 2900rpm
Starting MethodRecoil / Pull Start
DriveHand Propelled
Cutting Width41cm /16″
Cutting Heights20-70mm (5 Positions)
Cutting Height AdjusterSingle Lever
CollectorCanvas / Hard Top 55 litres
Fuel Tank Capacity0.75 Litre
Lawn Size20m x 20m
Collapsible HandlesHand Wheel + Quick Release
Safety FeaturesOperator Presence Control
Included AccessoriesN/A
Warranty5 Years (Terms & Conditions Apply)
Washing LinkNo
dB(A) Rating95


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