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Cobra AirMow 51B 20″ Petrol Hover Mower
Original price was: £452.99.£419.00Current price is: £419.00. inc. VAT
The Cobra AirMow 51B is a powerful petrol hover mower designed to make light work of steep banks and undulating lawns. Its 20-inch cutting width and Briggs & Stratton engine provide an excellent finish on slopes up to 45°.
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Description
Why buy the Cobra AirMow 51B 20″ Petrol Hover Mower?
- Powered by a reliable Briggs & Stratton 575EX 140cc Ready Start engine
- Wide 51cm (20″) cutting width for efficient mowing
- Exceptional performance on steep slopes and banks up to 45°
- Lightweight yet durable ABS injection-moulded deck
- Includes a versatile 3-in-1 wheel kit as standard for transport and stability
- Folding handles allow for convenient and compact storage
The Cobra AirMow 51B petrol hover lawnmower is expertly engineered for the demands of the domestic gardener, particularly those with challenging terrain. It floats on a cushion of air, allowing it to move effortlessly in any direction and making it the ideal solution for cutting on steep slopes and undulating ground where traditional wheeled mowers are unsuitable.
Powerful and Reliable Engine
At the heart of the AirMow 51B is a Briggs & Stratton 575EX Series engine. This 140cc powerplant is renowned for its reliability and performance. The ‘Ready Start’ system ensures straightforward, choke-free starting, allowing the user to get to work with minimal fuss. This engine provides all the power needed to drive the cutting system and maintain the air cushion for a clean, consistent cut.
Master of the Slopes
This mower’s standout feature is its ability to tackle slopes with inclines of up to 45°. The hover action, combined with its lightweight 20kg design and durable ABS injection-moulded deck, allows it to glide over turf without scalping, providing a pristine finish on even the most difficult banks. The generous 51cm (20″) cutting width ensures large areas can be covered quickly and efficiently, and a simple 2-stage cutting height adjustment allows for adaptation to different grass conditions.
Versatility with Standard Wheel Kit
Every Cobra AirMow 51B comes equipped with a 3-in-1 wheel kit as standard. This convenient feature enhances the mower’s usability, providing wheels for easy transportation across paths or driveways. The wheels can also be engaged during mowing to offer extra stability and support in particularly challenging areas, giving the operator greater control. For taller users or those needing extra reach, an optional Handle Extension Kit is available separately.
As an authorised UK dealer for Cobra, Sims Garden Machinery offers more than just a box. With over a century of experience, the team provides unparalleled support. For local customers, this machine includes a complimentary Pre-Delivery Inspection (PDI) by our trained mechanics, ensuring it is fully assembled, tested, and ready to use. This service, along with a handover demonstration and local delivery, is available from our Stratford-upon-Avon showroom, where our trained sales staff can provide expert advice.
Not sure which machine or part is right for you?
Our team is here to help. Contact us today for expert advice.
Our team is here to help. Contact us today for expert advice.
Technical Specification
| Engine | B&S 575EX Ready Start |
| Displacement | 140cc |
| Power Type | Petrol |
| Drive | Hand Propelled / Hover |
| Cutting Width | 51cm / 20″ |
| Height Adjustment | 2 Stage |
| Cuts on Slopes up to | 45° |
| Deck Material | ABS Injection Moulded |
| Folding Handles | Yes |
| Wheel Kit Included | Yes |
| Weight | 20kg |
| Domestic Warranty | 2 Years |
Why buy from Sims Garden Machinery?
Authorised main dealer
We are authorised dealers for leading brands, meaning genuine parts, manufacturer-approved training, and warranty support you can rely on.
Real people, real support
No call centres. No ticket systems. Just a knowledgeable local team you can speak to when you need help.
Expert advice — not pushy sales
Our team are trained mechanics and product specialists, so you get honest, practical advice based on how you’ll actually use the machine.
Established, independent family business
We’re a long-standing independent dealer with deep roots in the local area — built on reputation, repeat customers, and word of mouth.
Frequently Asked Questions
Who is the Cobra AirMow 51B best suited for?
The AirMow 51B is ideal for domestic gardeners who have steep banks, sloped lawns, or uneven ground. Its hover design allows it to glide over terrain where a traditional wheeled mower would struggle or scalp the lawn, making it perfect for maintaining difficult-to-reach areas.
How does the included wheel kit work?
The standard 3-in-1 wheel kit serves two main purposes. Firstly, it allows you to easily transport the mower across hard surfaces like patios and driveways without having to carry it. Secondly, the wheels can be engaged during mowing to provide extra stability and support on more challenging sections of your lawn.
What are the benefits of the Briggs & Stratton engine?
The Briggs & Stratton 575EX engine is known for its reliability and performance. Its ‘Ready Start’ feature is a key benefit, designed to make starting the engine easier by eliminating the need to manually prime or choke it, ensuring a quick and hassle-free start every time.
Is any assembly required when purchasing this mower?
When you purchase from an authorised dealer like Sims Garden Machinery, local customers benefit from a free Pre-Delivery Inspection (PDI). Our trained mechanics will fully assemble the mower, add the correct oil and fuel, and test it to ensure it’s working perfectly. This means it is delivered to you ready to start cutting.
User Manuals / Downloads
Additional information
| Weight | 18 kg |
|---|---|
| Brand | Cobra |
| Blade Brake ClutchIndicates if the blade can be stopped while the engine keeps running. | FALSE |
| Cutting MethodThe cutting mechanism used (e.g., Rotary or Cylinder). | Rotary |
| Cutting WidthThe width of the grass cut in a single pass. | 51 cm |
| Deck MaterialThe material the cutter deck is constructed from (e.g., Steel, Aluminium). | ABS Injection Moulded |
| Drive TypeHow the mower is propelled (e.g., Push, Self-Propelled, Variable Speed). | Push |
| Electric StartIndicates if the machine features a key or push-button electric starter. | FALSE |
| Rear RollerIndicates if the mower features a rear roller for creating lawn stripes. | FALSE |
Specification
Specification
| Type | Hover |
| Propulsion | Push |
| Cutting Width (cm) | 51 |
| Blade Type | Metal |
| Deck | Polymer |
| Power Type | Petrol |
| Engine/Motor | Briggs & Stratton 575EX Ready Start |
| Starting Method | Recoil |
| No of Heights of Cut | 2 |
| Lowest Height of Cut (mm) | 20 |
| Highest Height of Cut (mm) | 27 |
| Height of Cut Adjustment | Spacer |
| Weight (kg) | 18 |
| Handle Folding | yes |
| Max Domestic Warranty (yrs) | 2 |
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FREE PDI, DELIVERY & HANDOVER
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- Each machine will be tested prior to delivery.
- Orders will be sent out via either ThePalletNetwork or DHL insured service.
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