Mountfield S421R PD Self-Propelled Petrol Lawnmower - MowersUK

Mountfield S421R PD Self-Propelled Petrol Lawnmower


A powerful self-propelled, rear roller lawnmower for a stripy lawn.

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To produce a classic stripy look to your lawn you need a rear roller. To effortlessly nip around a small lawn and to easily cut various lengths of grass, with the power of a solidly built petrol engine, you need the S421R PD.

Self-propelled, the STIGA ST140 Autochoke engine, producing 2.kW of power at 2900 rpm, drives the 41cm wide cutting blade with resultant clippings being collected in the 55-litre canvas hard top collection bag. And when the bag is full there is an indicator to tell you to empty it (mix with equal amounts of woody material in your compost heap to help produce the best garden compost ever.)

This is a powerful and efficient mower that is dependable, sturdy (the steel chassis sees to that) and backed by a five-year extended warranty. It?s a beauty if you want that stripy lawn.


  • Engine: Mountfield
  • Engine type: ST 140 OHV
  • Engine capacity: 139 cc
  • Net power output: 2.20kW @ 2900 rpm
  • Starting method: recoil
  • Transmission: single speed
  • Drive: self propelled
  • Cutting width: 41 cm/ 16 inch
  • Cutting heights: 20-70mm (5 positions)
  • Cutting height adjustment: single point
  • Roller: yes
  • Collector: yes
  • Mulching: no
  • Collector: canvas with hard top 55 litres
  • Chassis steel
  • Fuel tank capacity: 0.85 litres
  • Lawn size: 20m x 20m
  • Collapsible handles: hand wheel
  • Safety features: operator presence control
  • Wheels: front 180 mm rear roller 127 mm
  • Washing link: no
Power Source Petrol
Power Details Mountfield ST140 Autochoke Engine 139cc 2.2kW @ 2900rpm
Engine make Mountfield
Transmission 2.2kW @ 2900rpm
Starting Method Recoil
Design Rear Roller
Cutter Deck Steel
Cutting Width 41 cm
Cutting Heights 20 – 70mm
Number Cutting Heights 5
Propulsion Self-Propelled
Collector Canvas Hard Top Bag / 55 Litres
Noise Value – Sound Power Level dB(A) 96
Weight 32kg
Warranty 5 Years (Terms & Conditions Apply)

Please refer to our Delivery Policy

Additional information

Weight 32 kg

Cutting Width


Drive Method

Self Propelled

Garden Size




Product Category

Petrol Mowers


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