Effortless, petrol performance

40cm Petrol Lawnmower Briggs and Stratton Engine

The Yard Force GM B40 125cc 40cm hand push petrol mower powers through lawns up to 400m². The Briggs and Stratton Engine has been specifically designed to deliver high power at low speed, and the Prime’n Pull™ E-Z starting system makes starting and operating the machine easier than you might think, your lawn will be transformed in no time.

  • Perfect for areas up to 400m²
  • Powerful 125cc Briggs & Stratton 300E Series engine
  • 40cm Steel Blade
  • 5 cutting heights with a central height adjustment
  • Intelligently designed 45L grass collection bag 


2 (+1) Years Warranty

28 Days Free Returns

Briggs & Stratton 300E Engine

With Prime n Pull E-Z Starting System, Simply push the prime bulb slowly three times, then pull to start. Specially designed to deliver high power at low speed

Central Height Adjustment

Achieve the perfect cut all season with 5 cutting heights ranging from 25mm-75mm and easy-to-use central height adjustment.

Lightweight Plastic Deck

Featuring a lightweight, high-quality plastic deck, the mower is easier to manoeuvre and to push around your garden.

Product Features

5 Cutting Heights

40cm Cutting Width

45L Grass Collection Bag

Central Cutting Height Adjustment

125cc Engine

Additional Features
  • Manoeuvrable, easy starting, fuel efficient
  • High-performance 125cc Briggs & Stratton 300E Series engine
  • 5 cutting heights with a central height adjustment for a perfect cut throughout the season
  • Intelligently designed 45L grass collection bag, allowing a free flow of air to compact clippings
  • Ergonomic handle
Product Specifications
Technical Specifications
Model GM B40
Power 125cc
Engine Briggs & Stratton 300 series
Cutting Width 40cm
Cutting System Steel blade
Cutting Heights 5
Cutting Height Range 25mm-75mm
Grass Bag 45L
Garden size 400m²
Central Height Adjustment Yes
Deck Plastic
Weight 19kg
Type Push Lawnmower
What's in the box
  • 1 x GM B40 Petrol Lawnmower
  • 1 x Grass Collection Bag
Delivery & Returns

You have 14 calendar days from the day you place your order to notify us that you want to cancel, you then have a further 14 days to return it to us. To be eligible for a refund the item must be unused and in the same condition that you received it and in its original packaging. To return your item and for more information, go to your account and select the returns option.


With a 2 year warranty (extending to 3 years on registration) and a support team behind you, you’ll have years of hassle free mowing.

Customer Reviews