Description
The Mountfield S421R HP has been ppdated for the 2018/19 season. The Mountfield S421R HP now has a new chassis and engine. The robust powder-coated steel chassis houses the new Mountfield ST120 Autochoke engine; this new engine is easy to start thanks to the auto choke system.
This hand propelled model has a 127mm diameter full width rear roller that provides a superb striped finish and and also allow you to cut right up to paths and border edges. The cutting height is centralised and easily adjusted with a single handle through 5 positions ranging from 20mm to 70mm, allowing you to choose the most suitable height for the finish required.
This model has been specifically designed to collect grass clippings and features a 55 litre grass collector with an indicator to show when it needs emptying. User comfort is ensured by an adjustable ergonomic handle that can be conveniently folded to maximise storage space when not in use
A 41cm cutting width makes this mower suitable for small sized lawns up to 20m x 20m.
Click to see our full range of Mountfield lawn mowers.

Rear roller for a classic striped finish to the lawn.
Mountfield S421R HP Specification
Engine Brand | Mountfield |
Engine Type | ST120 OHV |
Engine Capacity | 123cc |
Net Power Output | 2.20kW @ 2900rpm |
Starting Method | Recoil |
Transmission | Single Speed |
Drive | Hand Propelled |
Cutting Width | 41cm /16″ |
Cutting Heights | 20-70mm (5 Positions) |
Cutting Height Adjustment | Single Point |
Roller | Yes |
Collecting | 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 |
Included Accessories | N/A |
Wheels | Front 180mm Rear Roller 127mm |
Warranty | 5 Years (Terms & Conditions Apply) |
Washing Link | No |
dB(A) Rating | 96 |
Weight | 29kg |
Mountfield S421R HP Lawn Mower Delivery
Item | Within 10 miles of our store | Within 20 miles of our store | Collect from our store |
---|---|---|---|
Arrives boxed | £9.99 | £19.99 | Free |
Arrives assembled | £19.99 | £29.99 | £9.99 |
Why do we recommend Aspen fuel?
Aspen fuel is a premium fuel with very low emissions and a shelf life of up to 5 years. It helps to look after your engine saving you money on future service and repair costs.