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“A Cut Above The Rest”

Simple to use yet robust, the heavy-duty cutting blades give a clean-cut, specifically designed to allow for better ‘lift’ to cut thick or wet grass with ease. Proudly manufactured in the UK for the highest product quality and sales support.

The RM Series Rotary Paddock Topper range are the perfect machine for light to general duty topping of paddocks, fields and parkland.

  • Available in 1.2m (4′) or 1.5m (5′) cutting widths
  • Three heavy duty cutting blades
  • Electric start option available
  • Reliable Honda 13hp engine
  • Robust steel construction

Built for work

Designed for general topping and paddock maintenance duties, the RM Series Rotary Mowers give a great finish on parkland and large gardens, with the added benefit of a robust build which can handle rough fields and paddocks easily.

Easy to use height adjustment makes mowing quick and easy, with the large 19x7x8” tyres rolling smoothly across any terrain.

Powerful & Reliable Honda Engine

A powerful 13hp GXV390 Honda engine, with the option of electric start, is at the heart of the RM.

This reliable Honda unit is easy to start and cheap to run – we appreciate that these machines are used periodically and can spend half the time in the shed!

As such we have specifically designed then to be easy to start and use for any operator.

Improved performance

The RM Range now feature three new improved, heavy-duty cutting blades on three rotors rotating at 2500 RPM to give you the optimum cut along with improved performance.

Specifically designed to allow for better ‘lift’ to cut thick or wet grass with ease giving you the perfect finish.

I would have saved up a while longer and purchased a new one if I had not been fortunate to have found this one second hand, and that is the problem, they are so good that folk just do not part with them. Many thanks to all at Chapman, great product, great service and back up…buy British its a no brainer!!!

Ian Searson26th November 2016

Frank Nicol Farm and Garden Machinery Ltd recommend this strong and robust Chapman RM120 Rotary Mower ideal machine for maintenance of fields and paddocks, as well as large gardens and parkland.

Frank Nicol FGM31st July 2017

A really well built substantial topper. It doesn’t stall, even under heavy loads, and looks likely to last indefinitely.

Kevin Saunders27th June 2016

I replaced a heavy difficult to adjust PTO driven topper with the RM150. I find it much easier to use, I tow it behind my T20 Fergy and it puts much less strain on the tractor.

Paul3rd August 2016

Well constructed, thoughtfully designed and nicely balanced topper. Honda engine easy so start and much quieter the a B&S unit. First cut went through some decent length grass, weeds and sedge, which the engine coped with easily. Highly recommended

Duncan2nd September 2016

Great machine, really made our lives easier maintaining the horse paddocks.

John Moore23rd April 2017

We bought the 1.5m rotary topper and big bale handler in 2023 - service has been excellent. We had a problem with the bed on the topper, the machine was collected and returned with the bed replaced and the design strengthened - the company have been very easy to deal with and the equipment is very well made.

James HollowayMay 2025

I would like to express my most heartfelt and sincere gratitude to James for his invaluable assistance and expert guidance throughout this process.
I was already thoroughly delighted with the performance and quality of our RM120 mower, and the consistently outstanding customer service I've received has been absolutely unparalleled—further validating and reinforcing our decision to invest in a Chapman mower.
Moreover, I am particularly impressed that, thanks to the exceptionally responsive service and impressively swift delivery of the necessary components, I was able to successfully restore our mower to full working condition this very evening, which is truly remarkable and speaks volumes about the company's commitment to customer satisfaction.

James AdamsMay 2025

I bought the RM150 topper this week and put it to action straight away. it did a great job on our paddocks. Our 250cc quad handled the topper ok on our hilly fields. so far so good 👍😊

Pól Ó LiongsighJuly 2019

The RM150 has been great and I’ve recommended it already to a few people. I have some trouble with cold starts but I’m making some adjustments to see if that resolves the issue. I would rate it a 4 only because of those issues and the price point, but it’s a very positive 4/5.

Tim WJune 2023

I’ve owned my Chapman RM150 for nearly 2 years and it’s a really well-built mower. I had one issue where I attached the power cable to my quad bike and when I turned a corner it pulled off and ran over it. That was on my very first go. Zaros immediately sent a replacement cable which was easy to fit, and I’ve had no trouble since, but I now attach the power cable to the mower rather than the bike. The mower is very heavy and difficult to move around when it’s not hitched to the quad bike, but the cut is superb and the easy-start motor always starts first pull. Highly recommended this mower and Zaros.

Mark EllinFebruary 2022

I replaced a heavy difficult to adjust PTO driven topper with the RM150. I find it much easier to use, I tow it behind my T20 Fergy and it puts much less strain on the tractor.

PaulAugust 2016

A really well built substantial topper. It doesn’t stall, even under heavy loads, and looks to last indefinitely.

KevinJune 2016

December 2024
Great machine. It’s robust, well made and does the job perfectly. Very pleased with this purchase and the support of your team. Rating as 4 stars currently. If it continues to operate like this for a few more years, the rating will be a 5.

Mark BDecember 2024

Excellent sales support when I was looking for a mower deck. Plenty of information offered, discussed my usage needs and the recommendation was excellent.

David CooperOctober 2023

The RM120 has had a lot of use topping pasture behind my quad and copes with the rushes, and has also been used to clear brambles in our wood, which it did equally well. The mower has been reliable, always starts first pull, and the fuel economy is good. Overall, I’d recommend the RM120.

Andy BJuly 2022

It’s been performing grand but I do think it would be best to have the electric start as standard. Also wonder if rear guard might have a quick release bolt so you don’t have to hunt for spanner when needing to adjust.

Simon BeckettSeptember 2021

Great machine, really made our lives easier maintaining the horse paddocks.

John MooreApril 2017

I would have saved up a while longer and purchased a new one if I had not been fortunate to have found this one second hand, and that is the problem, they are so good that folk just do not part with them. Many thanks to all at Chapman, great product, great service and back up…buy British it’s a no brainer!!!

Ian SearsonNovember 2016

Well constructed, thoughtfully designed and nicely balanced topper. Honda engine easy to start and so much quieter than a B&S unit. First cut went through some decent length grass, weeds and sedge, which the engine coped with easily. Highly recommend.

DuncanSeptember 2016

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Options

Electric Start

Electric start GXV390 engine in place of standard recoil start
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Specification

Weight170kg
Cutting Width1.2m
Cutting Height25-200mm
Rotor RPM2500rpm
Number of Blades3
Engine Power13hp Honda GXV390
Tyre Size19x7x8″

Weight205kg
Cutting Width1.5m
Cutting Height25-200mm
Rotor RPM2500rpm
Number of Blades3
Engine Power13hp Honda GXV390
Tyre Size19x7x8″

Literature

RM Series ManualDownload
RM120 Parts Drawing 2019 OnwardsDownload
RM150 Parts Drawing 2019 OnwardsDownload

Dimensions

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