Allett Kensington 20” Cylinder Mower KENS20B
The complete turnkey petrol system — maximum width. The Kensington 20B is the largest mower in the Kensington homeowner range: a 20" petrol-powered cylinder mower for larger premium lawns that lays down strong, wide stripes and runs the full Quick Change cartridge system. No batteries to manage; fuel up and go.
- Cutting width: 51 cm / 20" (overall width ~68 cm / 27")
- Engine: 127cc Briggs & Stratton XR550 petrol engine
- Drive: self-propelled
- Recommended lawn size: up to approximately 900 m²
- Height of cut: 6 mm to 32 mm, variable micro-set adjustment
- Cutting cylinder: 6-blade precision cylinder (79 cuts per metre)
- Cartridge system: full 20" Allett Quick Change cartridge range
- Grass box: 70 litre · Weight: approx. 56.6 kg with grass box
- Rollers: zinc-plated steel front roller; double-section rear roller with differential (avoids wheel marks)
✓ Ships from Canada · Canadian parts, service & support · 2-year Allett homeowner warranty on the mower (engine covered by Briggs & Stratton's manufacturer warranty) · the Allett cylinder-mowing craft, trusted on professional sports turf.
Complete your system
The Kensington 20 runs the full range of 20" Quick Change cartridges — swapped in seconds. Turn one mower into a complete lawn-care system:
- Cut finer: 10-Blade Cutting Cylinder (QCC2010)
- Cultivate: Scarifier · Dethatcher · Lawn Brush
- Organise: Cartridge Display Stand
- Maintain: Reel Grinding — By Mail — send your cutting cylinder in for a factory-standard regrind.
Height of cut
- S = 6 mm
- 1 = 13 mm
- 2 = 19 mm
- 3 = 26 mm
- 4 = 32 mm
- Micro-adjustment: approximately 0.75 mm per click
Which Kensington size?
The 20" is the largest, for lawns up to ~900 m². For smaller lawns, see the Kensington 14 and Kensington 17.
FAQ
- Is a petrol cylinder mower loud or high-maintenance? It runs on a Briggs & Stratton XR550 engine — start it, mow, switch off. Upkeep is ordinary petrol care: fresh fuel, an occasional oil check, and keeping it clean. Nothing to charge or replace.
- Do I need to buy cartridges to start? No. It arrives ready to cut and stripe with its 6-blade cutting cylinder. Quick Change cartridges are optional add-ons you can bring on later — see "Complete your system" above.
- Which cartridge should I choose? For a finer, tighter cut, the 10-blade cutting cylinder. For lawn health, the scarifier or dethatcher. For finishing, the lawn brush. Each swaps in seconds.
- What does the warranty cover? A 2-year Allett homeowner warranty on the mower; the engine is covered by Briggs & Stratton's manufacturer warranty. Ships from Canada with Canadian parts, service and support.
Shipping
Ships by ground freight — a flat $450 CAD estimate within Canada, charged at checkout. Allett Canada may confirm final freight arrangements before shipment. US/international orders by request.