Webb Garden Tools produces a wide range of powerful petrol lawn mowers that are ideal for UK gardens with lawns that are more challenging to maintain.  Petrol engines give these mowers added cutting power and speed, making them more efficient at mowing challenging environments such as lawns with longer and/or damper grass.

The Webb WER18HP is a push-powered petrol lawn mower suitable for medium and large size lawns. Equipped with a powerful Briggs and Stratton 450E petrol engine, the mower has all the power you need to mow lawns of any condition, whether well-maintained or more overgrowth and weedy.

Let’s take a closer look at what the WER18HP has to offer:


  • Briggs & Stratton 450 Series 125cc Engine
  • 48cm Cutting Width
  • 7 Cutting Heights (25mm to 75mm)
  • 3-in-1 Cutting System
  • 60L Grass Box
  • Ergonomic Handles


The Webb WER18HP is powered by a Briggs and Stratton 450 series petrol engine. Offering 125cc of power, this 4-stroke engine is incredibly powerful while also producing lower vibrations and noise output, thanks to the innovative design of the 450E engine.

The engine uses OVH (overhead vale) technology, which optimises the engine performance to produce increased torque and mile economy, allowing the fuel to last much longer so that you can mow on larger lawns uninterrupted.

Petro mowers like this are always suited for larger gardens, although this one can easily be used in medium size lawns too. The power can be over excessive in some instances, so it is best used in larger lawns where you get more value for money, unless your medium size lawn is filled with tougher growth like long and thick grass, damp conditions, lots of weeds etc.

The mower engine does not use any power to propel the engine, meaning it is push operated, which can make it tougher to move. This does mean all power focuses on rotating the blade, highlighting its suitability for more challenging lawn conditions.

While petrol engines are noisier than electric engines, the fact it is a 4-stroke engine means that noise output is much lower than mowers with similar sized engines.

Cutting Blade

As it is intended for use on larger lawns, the WER18HP comes with a lengthy 46cm cutting blade, giving it a wide cutting range to cover those larger surface areas. Each pass of the mower removes large swathes of the lawn, helping to keep mowing time down to minimum.

As mowing with a heavier petrol mower is more challenging, it is handy that a wider blade helps to reduce time spent mowing, ensuring you don’t feel too tired from prolonged use. The blade quality is very high, being razor sharp for the cleanest cut while also durable enough to last a long time without needing sharpened or replaced.

Cutting Heights

With seven cutting heights ranging from 25mm to 75m, the WER18HP offers all the blade positions you need to maintain a lawn. Lawns grow to various lengths and conditions, sometimes being thick and overgrown with weeds while other times growth is much sparser, so it helps to have different cutting heights available to accommodate these situations.

Seven heights give you so many options, whether it is leaving the lawn shorter in length or keeping it longer. The seasons often impact what is best to use, with the amount of precipitation and temperatures affecting the overall lawn condition.

The lower settings let you achieve a close cut finish, keeping the lawn short and well maintained, while the higher settings are good for when you want to leave grass longer. You can easily switch between these positions using the central lever system on the cutting deck.


Petrol mowers like the WER18HP are heavier than electric mowers, with robust combustion engines and metal bodywork adding to the weight. It does make them more powerful but also more challenging to operate for the average user.

As a push mower, the WER18HP does not have self-propulsion, so it will be harder to use compared to self-propelled mowers. It is not the heaviest petrol mower, weighing 31kg, although this is certainly not lightweight for most people.

This means operating it on hills and sloped lawns it not recommended, as pushing this mower uphill is not the easiest. Pushing it on lever terrain is not too challenging thankfully, although people that struggle to move heavy objects best looking for a self-propelled petrol mower.

Ergonomic handles to help improve usability, with padded grip making it less strenuous to operate for longer periods. The hands can be adjusted to various positions too, allowing you to find a suitable position for your height and posture.  

3-in-1 Cutting System

The WER18HP comes with a 3-in-1 cutting system, making it a versatile option for lawn maintenance. For example, it has a standard cut and collect mode, which gathers all clippings into the 50L grass bag, which you can empty when you are finished mowing.

Discharge mode disperses the clippings back onto the lawn, while there is also a mulching function. Mulching is a great function, cutting grass into even finer clippings before discharging back onto the lawn.

These clippings break down into the soil, releasing added nutrients into the lawn. Essentially, you get free fertiliser any time you mow the lawn, resulting in an even healthier lawn as the season progresses.

Plus, mulching saves the hassle of emptying all those grass clippings, so we highly recommend using this feature. Being able to switch to different modes is great of course, as it lets you use whatever function is best suited for the lawn at that time.

Should you want to use the gathering function, the 50L grass box offers a good size capacity. The Easi-View design provides a level indicator so you know exactly how full the grass box is as you are mowing. 


  • Excellent Briggs and Stratton 450 Series Petrol Engine
  • 4-stroke engine means quieter operation
  • Works well on long, thick, weedy, and damp grass
  • Several cutting options available including mulching
  • Grass box comes with level indicator


Not self-propelled so challenging to move but ergonomic handles do help with usability

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Last update on 2022-04-11 / Affiliate links / Images from Amazon Product Advertising API

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