best 4 cycle weed eater

Best 4-Cycle Weed Eaters of 2022

A weed eater is one of your gardens most essential tools and will reach areas where your lawnmower simply cannot go. For keeping your grass edges clear and neat, looking for a great weed eater is a great idea. But what is the best 4-cycle weed eater?

Motors for garden tools are typically either 2-stroke or 4-stroke but a lot of people are unaware of the difference. In short, the best 4-cycle weed eaters will deliver much greater torque and power but at a lower rev. This means that this type of engine is much better suited to tools like this and will give a greater performance.

Furthermore, a 4-cycle weed eater is much cleaner and gives off far fewer emissions than their 2-cycle counterparts. This makes for a much more fuel-efficient system. So, with that in mind, let’s take a look at some of the best 4-cycle string trimmer options on the market!

Swipe the table!

Power Cutting Width Weight Rating
husqvarna 324l commercial weed eater Husqvarna 324L 25cc 18-inch 5.1 lbs 5-stars
troy bilt 4 cycle trimmer Troy-Bilt TB575 EC 29cc 17-inch 18 lbs
craftsman 4 stroke weed eater Craftsman CMXG TAMD 30A 30cc 17-inch 18 lbs
wild badger weed eater Wild Badger Power WBP31BCF 31cc 17-inch 15 lbs

So how did we compare the best battery weed eaters? We ranked each tool in four categories, taking a weighted average of each rank:  

  • Engine size: 30%
  • Cutting width: 25%
  • Shaft type: 15%
  • Weight: 30%

1. Husqvarna 324L 4-Cycle Trimmer

husqvarna 324l commercial weed eaterOne of the things that first jumps out at you when you look at this string trimmer is the sheer power. It runs on a 25cc 4-cycle engine that provides you with a great performance. This tool runs on a Honda engine that produces 9.0HP and an impressive 7000rpm; if you are looking for unrivalled power, this is where you’ll find it!

The fuel tank is clear meaning that you can monitor what is left and will never experience an unexpected refill again. Air can be quickly and easily removed from the fuel system thanks to a handy primer bulb and getting the motor started is a cinch thanks to the smart start feature.

But this is not the only feature that makes the Husqvarna 4-cycle trimmer extremely easy and convenient to use. Many of you will be familiar with the pain of having to change the trimmer wire. This can often be a time-consuming and fiddly task. However, this has been perfectly addressed by Husqvarna and thanks to the Tap n Go line release feature, you won’t ever have to suffer another challenging wire change again.

The Husqvarna 4-cycle trimmer features an 18-inch cutting head which allows you to tackle larger areas with greater ease. Thanks to the incredible power, even denser weeds and grass will be a breeze.

All of this is backed by a lengthy 2-year warranty so you can be confident that this is a tool that will stand the test of time.


  • Engine size: 25cc
  • Cutting width: 18 inches
  • Shaft type: Straight shaft
  • Weight: 5.1lbs



husqvarna 324L trimmer

2. Troy-Bilt TB575 EC 4-Cycle Trimmer

A straight shaft weed eater is essential if you are going to have to get underneath garden furniture, structures or other obstacles. They are also great if you are a little taller as you won’t need to bend over as much. While some straight shaft trimmers may not live up to your expectations, the Troy Bilt 4-cycle trimmer is packed with exciting and innovative features that make gardening a pleasure.

It’s difficult to ignore the power of this machine. At 29cc, this engine delivers exceptional power and impressive torque that results in a smooth, clean cut every time. Regardless of the time of year, this is a weed eater that has been designed to withstand all challenges. Whether the foliage is dry and brittle or a little damp, it will make light work of it all.

Getting this 4-stroker weed eater started is something of a dream. We’ve all experienced the hassle of a difficult to start gas garden tool but gone are those days thanks to the jump-start feature that gets the motor going the first time.

If you are short on storage space, it is likely that you will need a 4-cycle gas trimmer with attachments and the Troy Bilt trimmer won’t let you down. With up to 10 alternative heads, you can turn this weed eater into a multitude of other tools for maximum convenience.


  • Engine size: 29cc
  • Cutting width: 17 inches
  • Shaft type: Straight shaft
  • Weight: 18lbs



3. Craftsman CMXGTAMD30SA Trimmer

The Craftsman 4-stroker weed eater is a great option if there are a lot of obstacles in your garden. This is thanks to the straight shaft that makes tackling hard to reach areas so much easier. But this is certainly not the only thing that makes this a massively convenient tool.

The handle is fully adjustable so you will always get the most comfortable user experience. You will also benefit from much greater command over the device meaning that you can get the job done much more quickly. In addition to this, you will find that you experience fewer vibrations as a result of the precise handle positioning.

You could be forgiven for thinking that a 4-cycle gas trimmer would be exceptionally noisy, and don’t get us wrong, there are products that create something of a cacophony but this isn’t one of them! The Craftsman 4-stroker weed eater boasts incredibly quiet operation and a smooth feel.

This powerful 30cc engine delivers a good level of power and when you couple this with the 17-inch cutting head, it isn’t difficult to see how this tool will cut through grass and weeds quickly and effortlessly. What’s more, the engine boasts an easy to use, 2-step start that is pretty much foolproof.

The weed eater comes with the option to add attachments so all in all, you are not only getting power but also an amazing degree of diversity. 

(See our review on the alternative Craftsman Gas Edger here.)


  • Engine size: 30cc
  • Cutting width: 17 inches
  • Shaft type: Straight shaft
  • Weight: 18lbs



4. Wild Badger Power WBP31BCF 4-Cycle Trimmer

Having the ability to tackle several garden jobs in one is important to a lot of homeowners. This is especially true if you don’t have a lot of space to store lots of different tools. One of the best things about the Wild Badger weed eater is that it comes with a second ability in the form of a brush cutter.

This weed eater runs on an amazingly powerful 31cc engine that is reliable and easy to start. Furthermore, the engine is beautifully smooth and offers a much quieter operation than what you might expect. The fuel efficiency is second to none and as a result of the 4-cycle engine, this gas trimmer emits much lower levels of pollutants. But all of these features come together to give a much longer lifespan for the engine and a trimmer that will stand the test of time.

On top of everything else, this weed eater is a delight to use thanks to its lightweight design. The straight shaft is made from aluminium which is not only incredibly lightweight but also robust and hard-wearing. Furthermore, this weed eater comes with a Tap n Go feature which means that you can add string wire whilst on the go without the need to stop and mess about.

To give you the assurance that this is a reliable product, you get a massive 6-year homeowners warranty and if you are using it for commercial use, the warranty runs for 3 years. That’s a lot of trimming!


  • Engine size: 31cc
  • Cutting width: 17 inches
  • Shaft type: Straight shaft
  • Weight: 15lbs



What Is A Weed Eater And Why Do I Need One?

A weed eater goes by many names, you may call it a weed whacker, a string trimmer or even a whipper snipper. But however they are called, these cutting tools are important for your garden for many reasons.

The weed eater is used to trim grass, weeds and other plant life around the garden and is particularly useful for areas where larger tools, like a mower, cannot reach. They are typically powered by gas, battery or electric but for the purposes of this article, we will be looking at the powerful gas 4-stroke trimmer.

As we have mentioned, a weed eater is great for more compact areas and can be used to tackle a wide variety of unwanted growth in your garden. They are powerful and effective but what is so great about them is that they are lightweight and easy to use. Furthermore, with a slim and compact design, your weed eater will slot right into even the most crowded garden shed!

What to Consider When Buying a 4-Cycle Weed Eater

Before you choose your favourite weed eater, there are a few things to consider and it is important to look at the features and aspects of each tool. Doing this will help you to select something that will be easy to use and will meet your specific needs.

Telescopic Shaft

A telescopic shaft can make using your weed eater so much more comfortable. Essentially, this will give you the option to lengthen or shorten the shaft to suit your height. Furthermore, this option can make it a lot easier to get to those hard to reach corners of the garden.

Buying a string trimmer with a straight shaft will mean that the device is much more adept at getting underneath bushes, garden fixtures and other obstacles compared to a curved shaft. The addition of telescopically adjusting the shaft makes the process that much more doable.

That being said, if you need to get to areas that are further away, from a distance, a curved shaft weed eater may be the better solution. Again, the telescopic shaft will make life much easier.

Adjustable Handle

Similarly to the telescopic shaft, an adjustable handle can make the experience of using a weed whacker a lot more comfortable and pleasant. This is largely because the handle can be tailored to your height. For people who are much shorter, having to raise the arms to meet a higher handle will drastically affect your ability to control the weed eater.

Conversely, if you are taller, bending down to reach a lower handle can mean that you strain your back. At best this can be irritating and at worst, it could see you being put out of action while you recover.

Anti-Vibration System

With the power and energy produced by a 4-cycle engine, it is inevitable that vibrations are going to be produced. However, many weed eaters are designed with an anti-vibration system which will reduce wear on the components of the tool as well as making it more comfortable for you. I’ve also tested the straight shaft trimmers and have found they don’t vibrate as much so I’d opt for one of those if you’re concerned about vibration.

Line Feed

One of the most important things to look at when choosing your string trimmer is the type of line feed that it uses. In many older models, once the trimmer wire broke, you would need to carefully pull out the next portion by hand which is notoriously tricky.

However, a lot of modern models now come with a quick release system that releases the right amount of cutting wire with just a single tap. This is hugely convenient and will save you a lot of time.

You should also look at the capacity of the trimmer in terms of how much string wire it can hold at once. Many models are very generous and may be able to hold a very decent amount.

Line Feed

Cutting Width
The cutting width of your 4-cycle gas trimmer refers to the area it can cover in one pass. For example, if this is 15 inches, then the weed eater will cut 15 inches of grass or foliage at once. The size that you go for will largely depend on the area you wish to tackle.

For larger gardens, you may need something more substantial, but for smaller yards, a less generous cutting width may be sufficient. Furthermore, you should consider whether the wire trimmer will be enough to tackle the density of the weeds. If they are a little thicker, having a brush cutter attachment can make the job much easier.

How we Tested the Best 4-Cycle Weed Eaters

The 4-cycle weed eaters we recommended include wide range of engine types to match many different customers who wish to trim around their houses. We reduced the number of options down to include tools that have a 4-cycle engine, adequate power for domestic use and simple string changing.

We also took a look at the trimmers based on their cutting width, fuel efficiency, speed, simplicity of use, safety features, and attachments. Extras such as safety equipment or attachments beyond the basic tool are available with some of the tools on our list.

Our Verdict

The Troy-Bilt TB575 String Trimmer is one of the best 4-cycle weed eaters, even though yard sizes vary with the type of landscape design and size. It’s worth considering the Husqvarna 324L if you’re searching for a trimmer that is lightweight.

Final Thoughts

A weed eater is a tool that will keep your garden edges looking trimmed and tidy. Where unruly grass and weeds are concerned, these are a gardeners favourite tools. There are many excellent options on the market, but we believe that these are the best 4-cycle weed eaters available today.

(check out our review for the best weed eater brush cutter blades).

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