AL-KO Comfort 51.0 SP-B Self Propelled Petrol Lawnmower

Price:£432.50 £390.83£469 inc. vat

In Stock
  • 51cm (20″) Cutting Width
  • 30mm-80mm Cutting Height
  • Self Propelled Drive
  • Ergonomic Handlebar
  • 60L Collector
  • 5 Year Warranty

The Comfort 51.0 SP-B 51 cm (20″) is a self propelled petrol lawnmower with 4INONE function.

Power is provided by an easy starting Briggs & Stratton 650 EXB with automatic choke. Designed for gardens up to 1800 m², the Comfort 51.0 SP-A features a 7-stage cutting height adjustment and a 60 litre collection box with optimum aerodynamic airflow.

The extra, extra large wheels with ball bearings, self propelled drive and ergonomically shaped soft grip handlebar make the Comfort 51.0 SP-B easy to manoeuvre around the garden.

Feature Benefits

German Engineered – Made In Austria
The materials are of the highest quality, and its ingenious technology, perfect ergonomics and an eye for detail make our garden tools unmistakable.

Max Airflow Technology
The extra tall steel decks and large discharge chute increase the airflow resulting in the grass clippings being thrown in a high arc to the back of the collector. This ensures the collector is filled to the top and that the discharge chute does not get blocked.

Wide XXL wheels
The extra, extra large wheels with double ball bearings enables the mower to be pushed smoothly across grass or uneven land.

No more oil changes
The innovative design and optimal air cooling of the Briggs & Stratton EXi engines means that topping up the oil is enough instead of replacing all of the oil.

Ergonomic handlebar
The ergonomically shaped handlebar makes operating the lawn mower comfortable with the full width safety bar ensuring optimum safety whilst in use.

Additional information
Lawn Mower Type

Walk Behind Lawn Mower

Machine Power Type


Machine Category

Lawn Mowers

Machine Class


Manual or self propelled?


Mower Use

Collect, Side Discharge

Technical Info

Technical Info

Cutting Width 51 cm / 18 in
Suitable For Lawns Up To 1800 m²
Function 4INONE
Cutting Height 30 – 80 mm
Cutting Height Adjustment Central, 7 Stage
Engine Briggs & Stratton 625 EXi
Cylinder Displacement 150 cc
Power 2.3 kW / 2900 rpm
Drive Single Speed – 3.5 kmh / 2.2 mph
Cutter Deck MaxAirflow – Steel
Collector Volume 60 Litre
Wheel Size (Front/Rear) 200 / 280 mm Ball Bearing
Weight 34.7 kg
Homeowner Warranty 5 Year


There is a 2 year domestic warranty on all AL-KO Products (subject to product registration), however extended warranty is available for extra piece of mind…

Due to the high quality of the German engineered AL-KO petrol garden machinery products, when you purchase a new steel or aluminium lawnmower, garden tractor, rider, out front mower or petrol cultivator, a class leading extended 5-Year Warranty is available for extra piece of mind. To activate the extended warranty, simply ensure that your machine is registered and then is serviced annually from the date of purchase by an AL-KO approved service dealer.

More info available here:

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