The Mountfield S421R HP is a hand propelled rear roller rotary mower, ideal for those classic lawn stripes. The robust, powder coated steel chassis ensures this quality lawn mower will deliver a superb finish for many years and has a deck wash link for easy cleaning after use. Powered by an easy start 100cc Mountfield RSC 100 OJV 4-stroke engine. 5 heights of cut ranging from 20mm to 70mm selected using a single lever ensure you can pick the most suitable for the finish required. The 55 litre collector is easy to attach and has an indicator to show when it needs emptying. A 41cm/16" cutting width makes this mower suitable for small sized lawns up to 20m x 20m.
* Finish - lawn stripes
* Engine capacity - 100cc
* Net power output - 1.55kW @ 2800rpm
* Fuel tank capacity - 0.8 litre
* Safety features - operator presence control
* Wheels - front 180mm
* dB rating - 96
| Type | Rear rollered |
| Propulsion | Hand propelled |
| Cutting Width (cm) | 41 |
| Deck | Steel |
| Power Type | Petrol |
| Engine/Motor | Mountfield RSC100 OHV |
| Starting Method | Recoil |
| No of Heights of Cut | 5 |
| Lowest Height of Cut (mm) | 20 |
| Highest Height of Cut (mm) | 70 |
| Height of Cut Adjustment | Single lever |
| Grass Bag Capacity (ltr) | 55 |
| Weight (kg) | 30 |
| Handle Folding | Yes |
| Max Domestic Warranty (yrs) | 5 |