Yard Force 46cm (18”) Self-Propelled Rotary Petrol Lawn Mower
GM B46

Rated 5.00 out of 5 based on 2 customer ratings
(2 customer reviews)

£249.99 (Free Delivery)


PRIME’N PULL™ E-Z STARTING SYSTEM  starting-promise-briggs-stratton

The Yard Force 46cm self-propelled rotary petrol mower has a powerful Briggs & Stratton 500E Series Engine with the Prime’n Pull™ E-Z Starting System, it’is designed with efficiency and ease of use in mind. Simply push the prime bulb slowly three times to deliver the proper amount of fuel to the carburettor, then pull to start. This Briggs & Stratton engine is compact, lightweight and simple to operate – with reduced vibration, quieter operation and enhanced handling.

This lawnmower is ideal for gardens up to 750 m².


  • Briggs & Stratton 500E engine
  • 140cc
  • 2600RPM torque
  • Steel deck
  • Steel cutting blade
  • Cutting width: 46cm (18″)
  • Cutting height: 25 – 75mm
  • Central height adjustment
  • Mulching plug
  • 55 litre hybrid grass collection bag
  • 750 m² Recommended Garden Size
  • Weight 26kg


2 reviews for Yard Force 46cm (18”) Self-Propelled Rotary Petrol Lawn Mower

  1. Rated 5 out of 5

    Our new lawnmower arrived quickly and was straightforward to put together. First time using it it started easily and I cut our medium-sized lawn in what seemed like half the usual time, despite the grass being long!
    It’s self propelled so no need to push and it goes at a good walking speed. The grass bag is so much bigger than our old petrol mower, so hardly any emptying too!
    Have used it again since the first cut and the grass was cut in no time at all and hardly any petrol has been used. Also tried on a different height setting, and there are plenty to chose from.
    Definitely the right choice as an upgrade from our old mower!

  2. Rated 5 out of 5

    Received my mower and quickly and easily assembled it, the easy start was so beneficial and I was quickly mowing away, I’m normally hoisting my electric wire from side to side so no wires made mowing my lawn a breeze, the self-propelled feature helped too! I normally empty my grass bag frequently during the cut but the large bag on this mower meant only one empty, great feature! Would definitely recommend this mower.

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Quick starg manual

Q. Do you mix the oil with the petrol or is it a separate please?
A. This is a 4-stroke engine, no mixing is requiered. However, it is crucial you add SAE 30 oil BEFORE starting the engine. For more info please check out this video for a quick starting guide https://www.youtube.com/watch?v=WJqBaIzqtKg

Q. Is this mower self-propelled or push along?
A. This is a self-propelled mower, you can recognise self-propelled mowers on a double bail handle.

Q. Does it have a 2 stroke or 4 stroke engine?
A. This is a 4 stroke engine, no mixing of the fuel required, just add SAE 30 oil and unleaded fuel separately to the machine.

Q. What oil does this mower need?
A. This machine needs SAE 30 Oil, available in most DIY stores.

Q. Is it a pull cord start mechanism or push button?
A. This mower has a prime&pull easy start system, which means it starts with just 3 prime pushes and 2 pulls.

Q. Does this mower have a rear roller to leave stripes?
A. No this mower doesn’t have a rear roller to leave stripes

Q. What type of petrol do you buy for this mower – 4star, diesel, unleaded?
A. Unleaded fuel and SAE 30 4 stroke oil https://www.youtube.com/watch?v=qT1tz_okHaQ

Q. Does the mower come with oil for the engine?
A. No there is no oil supplied with the machine due to transport safety laws. Any traces of oil found left in the machine is due to testing prior to shipping.

Q. Are the blades metal?
A. This machine comes with a laser cut metal cutting blade, for extra sharpness, better grass collection and quieter cutting.

Q. What is the db noise level
A. 95Db

Q. My lawnmower won’t start – what can I do?
A: First step would be check the product support section on the website for a short video that will talk you through the best way to start your lawnmower. If you are still experiencing difficulties our team of technical experts are available 7 days a week to talk through the start-up process and establish what the problem may be.

Q. When I try and pull the pull cord it seems jammed.
A. If the lawn mower has had the recommended 0.5l of SAE 30 Lawnmower oil added, this will be due to compression in the engines cylinder, engage the start stop bar and with a slow but continuous force pull the pull cord out. Alternatively remove the spark plug located on the front of the machine to relieve all compression, fit pull cord into the pull cord guide and then replace spark plug and HT cable.

Q. My lawnmower is smoking, what should I do?
A. Ensure you have put the correct grade of oil in your lawnmower, ensure the mower has not been tipped for storage or cleaning purposes, then run the mower as normal in a stationary position until the smoke clears. Once clear, check oil level again, and top up if necessary. If you are seeing any form of thick black smoke, contact the helpline immediately.

Q. My lawnmower is cutting out.
A. Check that the air filter is clear, that the spark plug is connected properly to your HT cable and that the fuel cap has not been over tightened, this should be no more than finger and thumb tight.

Q. The revs on my lawnmower are low/ high, how can I adjust them?
A. Contact our technical helpline for guided instructions on how to adjust the revs of your machine.

Q. Does it have hose connector for washing
A. No there is no connection for a garden hose

Q. Does this mulch
A. No there is no mulch plug available with this machine

Q. What engine does this use? is it a Briggs?
A. This machine is fitted with a Brigss & Stratton 500E engine delivering 140cc and 2600rpm torque.

Q. How many years is the warranty?
A. Yardforce lawnmower come with a standard 2-year manufacturer’s warranty and are supported by a technical support service which is open 7 days a week.

Q. Does this lawnmower have a push alternative together with self-propelled option?
A. there is a 41cm push mower in the range, a smaller machine with a smaller 300E Briggs & Stratton engine.

Introducing The Briggs & Stratton 500E Series Engine
First Time Starting Of Your Briggs & Stratton 500E Series Engine


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