Chapman ATV Flail Mower with Electronic Fuel Injection
OverviewEssential Chapman FM150‑PRO Flail Mower info
Engine Brand Honda
Engine HP25 hp
Cutting Width 150 cm
Cutting Height25 - 225 mm
Weight 325 kg
Free Delivery Included
DescriptionWhy buy the Chapman FM150-PRO Flail Mower?
The New 2026 FM PRO enters new territory in the ATV flail mower market for extreme power and reliability while maintaining better fuel efficiency versus traditional carburettor models.
Designed for the full range of topping and mowing tasks, from thick dense rushes to fine topping of parkland, the FM series Flail Mowers can tackle anything thrown at them.
• 25hp Honda Fuel Injected V Twin
• Electric Start
• 22x11x8” Tyres
• Hardened Hammer Flails
• Double Fly Weight Clutch
• Wireless SmartCut Engine Controls
• Strenx® Cutting Deck
• 15 Litre Fuel Tank
Industry Leading Performance
The FM PRO utilises industry-leading Fuel Injected 25hp Honda Fuel Injected iGX800 V-Twin Engines, which offer unparalleled power and performance in their class.
The FM PRO models are fitted with forged hammer flails as standard, proven to cope with the most demanding growth, with a cleaner, more reliable cut.
Industry Leading Performance
The FM PRO utilises an industry-leading Fuel Injected 25hp Honda iGX800 V-Twin Engine, which offers unparalleled power and performance in its class. Complete with electric start as standard, this Mower is easy to use for anyone.
Strength, Reliability & Smooth Operation
At the heart of the FM Pro is a precisely balanced, reinforced 360 mm rotor, engineered for smooth, uninterrupted cutting even in the most challenging conditions. The Strenx® steel deck increases structural rigidity while reducing weight, making the mower stronger, easier to tow, and more efficient in operation.
A powerful 25 hp Honda V-Twin engine, paired with a larger fuel tank and high-capacity battery, ensures extended runtime and consistently reliable starting performance.
Efficiency & Operator Flexibility
Large flotation tyres can be positioned alongside the cutting deck for convenient towing or trailing behind for close-edge work up to fences, trees, and boundaries.
The redesigned axle system allows operators to switch between positions in under two minutes, maximising manoeuvrability and operational efficiency.
SmartCut Wireless Controls
The FM Pro now features the industry-first SmartCut wireless control box, allowing operators to start the engine and engage the cutting system remotely from the towing vehicle.
The system provides real-time monitoring of key parameters including engine temperature, fuel consumption, and service intervals, offering complete operational control, improved reliability, and preventative maintenance support — all without trailing cables or complex wiring.
Heavy-Duty Construction for Maximum Longevity
Built using premium Strenx® high-tensile steel, the FM Pro’s cutting deck and rotor deliver up to three times the strength of previous models while reducing overall machine weight.
The double flyweight clutch ensures smooth, reliable drive engagement, and reinforced components throughout the machine provide unmatched durability and long-term performance.
Precision Cutting & Maximum Performance
The rotor is paired with heavy-duty forged hammer flails, designed to pivot rearwards on impact with hidden obstacles, protecting the rotor while maintaining a clean, precise cut.
Refined rotor design ensures maximum power transfer from the engine, providing superior cutting across dense vegetation, long grass, and challenging terrain.
Optional Extras:
FRONT BREAK BAR
Tubular fender bar to protect wheels and feed tall material (eg. bracken, reeds) into the mower smoothly
CUTTER BAR
Fixed cutter bar within the deck to increase mulching and reduce chop size, for faster cut material de-composition.
TWIN BOGIE AXLE
Replaces standard axle assembly with rocking beam axle with two wheels (per side), for smoother travel over rough terrain. Can only be used with the wheels to the side, cannot be used with wheels trailing.
SpecificationsChapman FM150‑PRO Flail Mower technical details
Brand
Chapman Machinery
Reference (SKU)
FM150‑PRO
Weight
325kg
Cutting Width
1.5m
Cutting Height
25-225mm
Rotor RPM
2400rpm
Deck Steel Thickness
5mm cover, 8mm side plates
Number of Hammer Flails
26
Engine Power
Fuel Injected 25hp Honda iGX800 V-Twin Engine
Wheel Type
22x11x8"
Fuel Tank Capacity
10 Litre
Belt Size
2 x BX41 Cogged Belts w/ automatic tensioning system
Rotor Balancing
G6.3 Dynamic balanced
Country
Made in Britain
Warranty
24 months manufacturer's warranty
Model RangeChapman FM-PRO series comparison & specifications
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ReviewsVerified Chapman FM150-PRO Flail Mower reviews
3 reviews for the Chapman FM150-PRO Flail Mower
7 reviews for all FM-PRO Flail Mower models
Review Your Chapman FM150-PRO
Excellent flail mower. Well built, good powerful Honda engine, easy to use and had no trouble going through 4-5ft deep weeds/nettles and grass. Pleased and would recommend.
I would only buy a UK made machine as the Chinese alternatives just don’t have the grunt nor the build quality and I have not been disappointed. Fantastic piece of kit and I would recommend this to anyone. Thanks Chapman!!
Recommended. Nice heavy-duty flail. Worth the extra cost v Chinese cheaper flails. With proper adjustment of cutting height tackles quite long grass, thistle and bramble on steep ground. Engine starts first time with key, better than endless cranking. Self-adjusting belts useful. Used with alpine tractor rather than ATV. 5 star out of 5
Well made piece of kit
Well made piece of kit will be used behind an alpine tractor. Quite heavy; smaller quads may struggle Price competitive, delivery direct from Chapman Easy transaction
Have bought the FM 120 with hammer flails……..Just amazing bit of kit !!! Built like a tank, very easy to use, best engine in the business ( Honda), very powerful, surprisingly quiet and just chews through, bracken, thistles, reeds, brambles, hogweed you name it . Very pleased with the purchase and wouldn’t hesitate to recommend over any other machine or make . Thank you Chapman!!!
Excellent
FAQsChapman FM150-PRO Flail Mower help & questions
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