ALLETT KENSINGTON 17B Petrol Cylinder Mower

Engineered for Excellence: The Allett Kensington 17B Petrol Cylinder Lawn Mower

If you desperately want to create a lush, green lawn with bold traditional stripes, the Allett Kensington 17B will help you realise your dream. This refined petrol cylinder mower is purpose-built for dedicated gardeners who won’t settle for second best. It blends modern technology with classic British engineering to deliver the pristine results you’d expect from a truly premium machine.

Engine Options to Suit Your Preference

As the mid-sized model in Allett’s renowned Kensington line-up, the 17B offers a choice between two dependable engines, both designed to meet the highest standards of domestic performance. You can select the 127cc Briggs & Stratton XR550, known for its optimised power and low emissions, or the 122cc Honda GX120, which offers enhanced combustion efficiency and a high power-to-displacement ratio.

Each option comes equipped with a recoil starter and is tailored for consistent operation across a variety of lawn types. Whether you’re trimming fine ornamental grass or managing a thicker lawn, these engines perform with quiet confidence. A 17-inch (43cm) cutting width makes the 17B well suited to lawns up to 700m² in size, while its 2-litre fuel tank provides ample capacity for you to get the job done without interruptions. And with a low noise output of just 96 dB(A), it’s a considerate choice for residential areas too.

A Cutting Cylinder That Sets the Standard

What truly defines this mower is the way it cuts. The six-bladed cylinder rotates with impeccable precision, making 79 clean cuts per metre to leave a finely groomed, healthy lawn behind. This cylinder action mimics the effect of professional greens mowers, offering a level of finish rarely found outside of sports pitches or stately homes.

To help you tailor the cut to the season or grass type, Allett includes a micro height adjustment system with a finely tuned range between 6mm and 32mm. This easy-to-use mechanism allows you to make precise changes to cutting height, supporting both ultra-low ornamental finishes and slightly longer, lush growth.

Striping Excellence Comes as Standard

The visual impact of a beautifully striped lawn never goes unnoticed. The Kensington 17B achieves this classic aesthetic with the help of a zinc-plated front roller and a split steel rear roller with differential. Together, these components ensure full-width contact with the lawn, forming crisp, symmetrical stripes without risk of smearing or scuffing during turns.

In addition to the rollers, a spring tine comb lifts grass blades before cutting for an even result, while the adjustable rake helps clear debris and moss that may otherwise interfere with the finish. These features combine to deliver both precision and consistency, leaving you with a lawn that looks just as good after the tenth cut as it did after the first.

More Than a Mower: A Complete Lawn Care System

The Kensington 17B is far more than a simple cylinder mower—it’s a full-featured, multi-functional lawn care machine. Thanks to Allett’s Quick Exchange (QX) cartridge system, you can quickly remove the cutting cylinder and swap in one of several optional cassettes designed for different seasonal needs.

Available to purchase as accessories, these cartridges include a scarifier, aerator, dethatcher, lawn brush, and Verticut unit, each designed to target specific lawn conditions. For those who want the most immaculate finish possible, a ten-bladed cylinder is also available for you to buy, providing even finer cuts for competition-level presentation.

Stability, Comfort, and Practicality Combined

At 53.5kg with the grass box attached, the Kensington 17B feels grounded and composed on the lawn. Its weight contributes to a smooth, controlled movement, with minimal effort needed to maintain straight, even lines. This stability is especially important on uneven or sloped areas, where lighter mowers may slip or wobble.

The handlebar setup offers three height positions, so you can mow comfortably at a posture that suits your height. This not only improves control but also reduces back and shoulder strain during extended use. When you’re finished, the handlebars fold down neatly, allowing for compact storage in the shed or easy transport in a vehicle.

An auxiliary wheel kit is included as standard too, allowing you to raise the mower for less formal grass or longer turf. The mower also features a spacious 62-litre grass collector, which reduces the need for frequent emptying. Made from durable, high-impact plastic, it’s built to handle regular use.

A Proud Tradition of British Engineering

Allett is one of Britain’s most respected lawnmower manufacturers, with over six decades of experience in crafting walk-behind mowers for both domestic and professional users. Every Kensington model reflects this heritage, with thoughtful designs, quality components, and rigorous attention to detail. From the frame to the cutting cassette, these mowers are built to last and perform.

To support this commitment, the Kensington 17B Petrol Cylinder Lawn Mower is backed by a two-year warranty for domestic users, with a three-month warranty provided for Sports Pro applications. This reflects the confidence Allett places in its products—and the peace of mind you gain from choosing such a trusted name in lawn care.

Choose the Best – Order Your Allett Kensington 17B Today

For gardeners who treat lawn care as a craft rather than a chore, the Allett Kensington 17B delivers everything you need—and more. It’s elegant in design, robust in construction, and endlessly capable thanks to its interchangeable cartridge system. From the first pull of the recoil starter to finishing the final stripe on your freshly cut lawn, this mower speaks to quality and purpose. Invest in a lawnmower that’s built to impress and engineered to perform. Order yours today and experience the best in precision mowing.

Take a Closer Look at the Allett Kensington Cylinder Mower Range