4-Cycle vs. 2-Cycle Weed Eaters: Pros and Cons of Each. 4cycle trimmer

Best 4 Stroke Weed Eater (Easy Review Comparison)

What makes the very best 4 stroke weed eater? Is it design, ease of use, durability, price? Or maybe, it’s all four.

There are four cycle string trimmers that can be good for different people’s needs, and what works for you might not end up working for somebody else.

But I guess that’s why you’re here, aren’t you? To find the very best for YOUR needs!

If you want to find a weed eater that’s going to fit your needs absolutely perfectly, then you owe it to yourself to stick around and keep reading, because I’m about to break it all down.

Short on time and want my #1 recommendation?

If I had to recommend you only one (4-stroke) string trimmer, it would be this Husqvarna 324L Straight Shaft Weed Eater.

While it’s not the least expensive, it can handle anything you throw at it, and both homeowners and professionals will appreciate its benefits.

Overall, the price and durability make it a solid piece of lawn equipment that I feel confident enough can fit almost anybody’s needs. It feels good in the hands and has the quality that only Husqvarna can provide.

What we’ll be going over today:

The Best 4 Stroke Weed Eaters

Craftsman WS405

Husqvarna 324L 4-Stroke Weed Eater. Best for Home Commercial Use

If you’re looking for a do it all kind of gas trimmer; one that can handle any home yard with ease or cut through your commercial jobs like a champ, then you’re going to love the Husqvarna 324L String trimmer.

From a well designed, 18” cutting width trimmer head that reloads string line easily to its easy start, smooth-running operation, you’ll find that you’re getting the job done quicker and more efficiently, every single time.

A Robust (Work of Art) Trimmer Head

Your weed eater’s head is the part of your equipment that you want to be designed the absolute best. Luckily, Husqvarna did exactly that with the 324L.

The head can easily release more line by simply tapping it on the ground. This makes your job so much easier by effortlessly allowing you to keep working. Gone will be the days of having to stop and manually pull out more line.

Next, you can use any size trimmer line that’s available (.095 to.105). You might be wondering why this even matters, but by using the stronger line you can cut through thicker brush, weeds, and debris that may be around your property.

The only downside to this trimmer head is the fact that it doesn’t have a pop-off lower, so you won’t be able to use any aftermarket attachments trimmer.

Smooth, Yet Powerful Operation

Combine this string trimmer’s four-stroke motor and straight shaft design, and you’ve quickly got a powerful piece of equipment on your hands.

The noise on the Husqvarna 324L is considerably lower than most others and you won’t get any shaking or vibration, all thanks to the shaft design.

It feels smooth in your hands, but you know that you are working with something powerful by how it cuts through grass and weeds like a knife through butter.

My Final Thoughts

I really like this weed eater and it’s one of my favorites. but I’ll be straight up: it’s not cheap! However, you really do get what you pay for. You’ll be investing in a solid piece of solid equipment that’s backed by a really good company. If you can get over some of the minor cons like the price and not having the ability to add any attachments, then this will be a complete winner for you!

Click here to read through all the Amazon reviews for the Husqvarna 324L and I think you’ll quickly see why it’s rated as my most recommended.

Craftsman WS405 Straight Shaft Trimmer. Best for The Money

If you have a small yard and you are looking for a four-cycle weed wacker that gets the job done reasonably well, then the Craftsman WS405 may be worth a deeper look.

With its easy (2 steps) prime n’ pull start and accepting an array of attachments. essentially making it a jack of all trades, this Craftsman straight shaft weed eater can deliver for most homeowners.

The cons I found with this trimmer is the fact that it’s reasonably heavy and there is a design flaw with the bump cap that makes replacing string harder than it needs to be.

Prime Pull. You’re Ready to Go

Having a weed eater that can easily start makes life so much easier. Being able to just prime, pull and go (on the very first pull) with the Craftsman WS405 makes using it such a breeze.

You’re going to feel confident knowing that you won’t be spending more time fidgeting with a piece of equipment just to get it started, than actually using it!

Go Attachment Crazy

If you’re looking for a string trimmer that can accept a list of TrimmerPlus attachments, then this is going to be right up your alley.

The Craftsman WS405 can accept all of these attachments below (which are conveniently available on Amazon):

My Thoughts

Listen, if you’re a homeowner with a smaller yard and you want a lot of different attachments that can really make this a one and done type of tool. then I would recommend the Craftsman WS405. Personally, I think it’s the best 4 stroke weed eater for the money.

It is a little on the heavier side (which you may or may not get used to) and many people have complained about Craftsman over-tightening the nut on the bump cap which makes it hard to restring. If you can get over these two minor annoyances, then I think you’ll be happy with the versatility this 4 cycle string trimmer provides.

Troy Bilt EC (Four Stroke) String Trimmer. Best for Small Yard, Home Use

If you’re a homeowner who wants the ease and reliability of a 4 stroke trimmer that is going to get a “weekend only” type of use then you’ll probably want to take a look at the Troy Bilt EC 17” Weed Eater.

With its lightweight (compared to the other two in this guide) frame and soft pull-start, it’s a decent trimmer if you’re not looking for the top of the line perfection.

Lightweight Frame

Anyone who has been around power equipment long enough knows that having to use something heavy (weekend after weekend) can become a real pain.

While the Troy Bilt EC still has a 4 cycle motor, making them heavier to begin with, it’s lightweight (only 11lbs) compared to the other two in this list

If weight is a huge factor for you and you just want the lightest of the three, then this should fit your needs.

Soft Pull-Start

One major advantage of this string trimmer is just how easy it starts. and that makes a world of difference.

You may be used to other weed eaters that take all your strength just to get started, but the Troy Bilt EC only needs a light pull and it should fire right up.

My Thoughts

It’s a good weed eater for the average user. It doesn’t do anything exceptionally well, but it gets the job done that it was made for. Definitely not my favorite, but I’ve also seen worse!

This 4 cycle string trimmer can have a lot of little quirks, so you need to make sure to read the manual fully and understand proper start-up procedures, etc.

Honda HT35S 4 cycle Grass Trimmer.

Still not sure? Don’t just take my word for it:

How I Picked

Picking these three string trimmers wasn’t easy, but I’ll share the criteria I used when making my decision:

4-cycle, 2-cycle, weed, eaters, pros

    The Brand: For me (and you), it’s really important to pick reputable brands when we are choosing a piece of power equipment. All three of these brands (Craftsman, Husqvarna, and Troy Bilt) create a solid, wide range of lawn and garden products that have a good reputation in the industry.

What is a 4 Stroke String Trimmer?

If you’ve been looking around at power equipment lately, then you’ll likely have noticed a new technology making its rounds – the 4 stroke engine. So, what exactly is it and how do they work?

4-Cycle Engine Explained:

A 4-cycle engine does almost the same thing as a 2-cycle, but it takes two more strokes to complete a cycle.

The 4 stroke cycle looks something like this:

Step 1) Intake – As the piston moves into a downward position, the pressure is allowed to push the air-fuel mixture into the bore of the cylinder.

Step 2) Compression – The air-fuel mixture gets compressed between the cylinder head and the piston.

Step 3) Power – The piston is in the perfect position to ignite the gas. This is where all the magic happens and gives power to your equipment.

Step 4) Exhaust – As the piston reaches the center once again, the exhaust valve opens and pushes the used gases out of the exhaust system. Once the piston reaches the center again, the 4 stroke process will repeat

Stroke vs 2 Stroke Weed Wacker

Now that you understand how a 4 cycle engine works, you’re probably wondering what exactly are the benefits and are they really better?

Advantages of a 4-stroke vs a 2-stroke

There are many advantages to getting a 4 stroke weed eater over a 2 stroke:

  • Saves you time by not having to pre-mix oil and fuel
  • Makes more torque at lower RPM’s, which allows for a more durable, longer lasting engine
  • Cleaner burning emissions so you don’t have to smell gas and oil while you work
  • Better fuel economy, which is going to save you money on fuel in the long run

Disadvantages of a 4 stroke string trimmer

While it may seem like four cycle trimmers are the hands down winner, they don’t come without their own set of disadvantages :

  • complex to build, which means they’re harder to repair if something goes wrong
  • Usually more heavy (although new technology is finding ways to make them even lighter)
  • frequent oil changes required

Straight or Curved Shaft: Which is Better?

Many weed eaters (not only 4 cycle) come in straight or curved shaft options. You’re going to have to decide which style fits you best.

Straight Shaft

Straight shaft weed eaters are a great, versatile option. They make getting into hard to reach spots so much easier. They usually have less vibration because of their extra weight and tend to be a little more powerful than a curved shaft.

I find straight shaft designs great if you have a lot of different areas and hard to reach places you need to get into with your string trimmer. They’re usually capable of accepting different attachments for other jobs, as well.

Curved Shaft

Many people find curved shaft weed trimmers more comfortable to use since they are (usually) lighter in weight and have a natural curve that allows the head of the weed eater to sit closer, allowing for more control.

Personally, I find curved shaft easier to do other tasks such as edging lawns and quickly cutting down weeds out of the cracks of concrete.

How To Choose a Weed Eater

If you’re anything like me, you want to know that you’re investing your money into the right piece of equipment, am I right?

So below, I’ll break down some key things you should be looking for when picking the best 4 stroke weed eater:

In my opinion, the size of your yard is going to determine almost 90% of what type of weed eater you decide to buy. Pick one that isn’t meant for the job you’re going to be doing and it’ll be a pain every single time you take it out.

If you have a medium to large sized yard. then I really recommend you choose something that’s going to be more on the professional side of things. You want it be able to handle the amount of work you’re going to throw at it and stay durable.

If you have a small yard. you can get away with a weed wacker that’s more suited for light, home use.

Making sure you stick with major brands (like Husqvarna. Craftsman. Troybilt. Steel. etc.) and checking their warranties is always critical. The last thing you want to do is get an off-brand weed eater that doesn’t offer a robust warranty and be left with a hunk of junk that sits collecting dust.

What Other People Say (Reviews)

Spend your time and do your due diligence. Each of the string trimmers I have listed on this page have many, many reviews on Amazon from others who use the equipment. Don’t just take my word for it, but look and see what others have to say about the weed eaters you’re interested in. When it’s all said and done, I want you to be informed and able to make a Smart purchase!

String trimmers are known by many names (Weed Eater is actually a brand name). If you are looking to buy a gas-powered model, there are two different types of gasoline engines available: 2-cycle and 4-cycle.

2-cycle and 4-cycle string trimmers each have advantages and disadvantages depending on your priorities and needs:

  • 2-cycle weed eaters tend to be lightweight, easy to maintain, and affordable but are louder and not environmentally-friendly
  • 4-cycle weed eaters are usually quieter and produce lower emissions but they tend to be more expensive and heavy.

The pros and cons will be discussed in detail, as well as how 2-cycle and 4-cycle engines function. Each engine has positive and negative aspects that need to be considered before you invest in a weed eater.

Check out the DynaTrap Mosquito Flying Insect Trap – Kills Mosquitoes, Flies, Wasps, Gnats, Other Flying Insects – Protects up to 1/2 Acre (link to Amazon).

What Is the Difference Between 2-Cycle and 4-Cycle String Trimmer Engines?

2-Cycle 1. Lightweight2. Easy To Maintain3. Affordable 1. Not Environmentally-Friendly2. Loud3. Gas and oil must be mixed at a specific ratio
4-Cycle 1. Quieter2. Lower emissions3. Don’t have to mix gas and oil 1. Higher cost2. Heavy

2-cycle and 4-cycle engines are sometimes referred to as 2-stroke or 4-stroke engines. This type of engine isn’t specific to weed eaters; chainsaws, edgers, and other gas-powered yard tools use these types of engines too. Regardless of the brand or type of yard tool, they will have the same basic combustion process that makes them run.

Both types of engines are powered by gasoline. The 2-cycle and 4-cycle engines are specific to gasoline engines. There are electric yard tools, but those engines function differently and don’t have the same stroke processes as gasoline engines.

How 4-Cycle Engines Work

The 4-cycle engine has several moving parts. It has a crankshaft, camshaft, a connecting rod, multiple valves and lifters, and a piston. It also has four basic stages that are completed in two revolutions, which is why it’s called a 4-cycle or 4-stroke.

The four cycles of a 4-stroke engine are:

Each stroke, or cycle, completes one part of the 4-cycle process (source).

How 2-Cycle Engines Work

The 2-cycle engine goes through the same process but with fewer steps and has fewer parts. A 2-stroke only has a crankshaft, a connecting rod, and a piston.

It only takes one revolution to provide power, release exhaust, intake air, and compress that air. When the piston goes down, it creates power and releases exhaust. When it moves upwards, it takes in air and compresses it.

Because it can do the same amount of work in fewer strokes, 2-cycle engines create a more powerful machine. They are smaller than the 4-cycle engines because they don’t have as many pieces and don’t weigh as much.

How Are 2-Stroke And 4-Stroke Engines Lubricated?

Engines have to be lubricated so they can continually run smoothly. If they don’t get lubricated, they can wear out faster.

2-cycle engines use a mix of gasoline and oil in the same chamber. As the gasoline moves through the engine, the oil moves along with it and lubricates all the parts. 2-cycle engines typically require a specially formulated oil that you mix with gasoline.

Too little or too much oil can damage the engine, so be sure to read the manual that comes with the weed eater to find what ratio you need.

Note: 2-cycle oil can go bad so be mindful of how old it is when adding it to gas.

4-cycle weed eaters have separate compartments for oil and gas, so technically you can use the same kind of gasoline you use in your car for your weed eater, however, it is extremely important that you use gas with 10% or less ethanol to avoid damage.

I’ve grown partial to skipping the pump and using an ethanol-free fuel (link to Amazon). Ethanol-free gas is a great solution for gas-powered yard tools and allows you to completely avoid the moisture issues that cause so many issues.

4-cycle, 2-cycle, weed, eaters, pros

You will also have to have oil in the second compartment. Since the oil and gas are separate, you will have to change out the oil. A good rule of thumb is to change the oil after twenty-five hours of usage. Most people that I know usually change the oil once a year at the beginning of the season.

The Pros and Cons of 2-Stroke and 4-Stroke Yard Tools

Before you make a purchase, you should consider the pros and cons of each engine. Each one has features that make it a valuable tool. But, they also have their downsides.

The key aspects to be compared are weight, power, fuel efficiency, noise levels, maintenance, and price. Each aspect is an important part that should be considered when making a purchase. Not every favorable aspect can be present in a weed eater, of course, so you need to decide which are most important to you.

Here’s the short and sweet of it. Read on for details on each section.

Feature Comparisons Between 2-Stroke and 4-Stroke Engines

Because 4-cycle engines have a longer process that uses more parts, the engines are typically bigger, which results in a heavier weed eater. A heavy machine can be difficult to maneuver, so you might end up with uneven lawn edges, especially if you’re teaching your child how to properly use it.

Many 4-cycle weed eaters need to be kept level so the oil will continually lubricate the engine. If they are tilted to the side for too long, the oil can’t be evenly distributed, and it will have the potential to damage the engine. If the weed eater is too heavy for the user, this might be a difficult task.

2-cycle weed eaters are lighter because they have fewer parts inside, so it should be easier to handle. You’ll be able to have better precision and get straighter edges on the lawn if you’re not struggling to carry for extended periods of time.

The 2-cycle weed eaters don’t have to be kept level. Since the oil is mixed with the gas and has a different lubrication system, it can be held at any angle. This will also make it easier to handle since you don’t have to worry about how you hold it. This might also be beneficial if you have a uniquely shaped lawn with difficult angles.

The 2-cycle weed eater has the advantage if you want to purchase a weed eater that the whole family can use since it’s lighter and easier to handle.


Torque is the power that’s created by the engine that causes the blades of the weed eater to turn. 4-cycle engines produce more torque, giving you more power to work with. Because of the torque, 4-cycle weed eaters can cut through grass easily. If you have a particularly thick patch of grass, you will get through it quicker with a 4-cycle weed eater rather than a 2-cycle. 2-cycle weed eaters should still be able to get any job done, but you may have to work a little harder for it in some areas.

Since 4-cycle weed eaters are heavier, its power is beneficial because it will allow you to spend less time with the machine since it can cut through grass faster. If you have to spend more time with the lightweight 2-cycle weed eater, you may feel the same amount of fatigue as if you had used a 4-cycle.

4-cycle weed eaters have the advantage if you want to glide right through the grass and get the job done quicker.

Fuel Efficiency

4-cycle weed eaters burn cleaner and do not create as much pollution. The 4-cycle doesn’t cause as many fumes while the engine runs as the 2-cycle weed eater does. Since the gas and oil are kept separate, it doesn’t burn oil as it burns the gas, so you’re getting more usage out of the fuel.

Since the 2-cycle weed eater keeps gas and oil together, it will burn the oil and pollute the air with exhaust fumes. The burning oil is what causes more pollution. As more people grow concerned about pollution and climate change, it’s possible that 2-cycle weed eaters won’t be allowed one day because of how much pollution they release.

The 4-cycle weed eater has the advantage when it comes to fuel efficiency. fuel being burned means less time trimming, so you will get more time out of the 4-cycle.

Noise Levels

The 2-cycle weed eaters are typically louder than the 4-cycle. This is because its process is completed in just two strokes. The 4-cycle engines have four strokes. The third stroke, the intake stroke, closes up a cylinder inside the engine that makes it quiet. The 2-cycle engines don’t have a feature like that, so they will usually be pretty loud.

I always wear noise-canceling headphones when doing yard work with gas-powered tools. I strongly recommend hearing protection.

The 4-cycle weed eater has the advantage if you want a quieter machine. This can be beneficial if you live in the suburbs and don’t want to be disruptive to your neighbors.

Note: If noise levels and fuel efficiency are major concerns for you, it’s worth considering battery-powered string trimmers. These have come a long way in recent years. See Gas vs Electric: 6 Reasons To Use Battery-Powered Yard Tools


Okay, so just hear me out on this. A lot of people argue that 4-stroke engines are more reliable. I can agree with that. But here’s the thing…

2-cycle weed eaters have fewer parts that can break. Remember that its engine has three main parts, a crankshaft, a connecting rod, and a piston, while the 4-cycle engine has those three parts along with a camshaft, valves, and lifters. pieces mean you have more parts that could potentially break.

A 2-cycle weed eater may be easier to repair at home than a 4-cycle since it has fewer parts. There’s just less that can go wrong with it.

If a 4-cycle engine breaks and you aren’t too savvy with repairing engines, you may have to have it professionally serviced. Hiring a repairman will cost you more money, especially if you end up with a weed eater that needs multiple repairs.

Now in fairness, there is another side to this story. Two-stroke engines run at a higher RPM in general. And so, they can wear down the internal parts quicker. This means that they can break down more often, theoretically at least (source). That makes 4-strokes appealing for some.

But 4-strokes do require more ongoing routine maintenance. You have to change the oil each season, for example. That’s not something you have to worry about when it comes to two-strokes. Yes, you have to mix the oil and gas but not if you use a commercial premix like I do.

All in all, 2-cycle engines have a slight advantage when it comes to routine maintenance but 4-cycle engines have the edge in longterm durability. There are really some solid arguments on both sides for this one so maybe we call this section a toss-up.


In a perfect world, you’d make your decision solely based on your preferences. But realistically, you have to keep your budget in mind, and that’s typically the deciding factor when it comes to buying yard equipment, isn’t it?

Weed Eater Cost: 2-cycle vs 4-cycle

Basic run-of-the-mill 2-cycle weed eaters typically average between 100 and 200, but the price can go above and below this range depending on the brand and model.

4-cycle weed eaters average between 150 and 350. Again, the price will vary according to brand and model. 4-cycle engines are bigger and have more parts, so they cost more to manufacture and result in a larger price tag.

As you look at prices, be sure to research which brands are trusted and are of high quality. The cheaper weed eaters are probably going to break down more often, which means you might have to spend quite a bit of money on repairs or replacement parts. Consider that repairs will add to the long term price you invest in the equipment.

Gas and Oil Costs

Both types of weed eaters require gasoline and oil to function. 2-cycle weed eaters use less oil but 2-stroke oil is usually more expensive.

4-cycle weed eaters usually require SAE 30 oil in its own compartment. You can usually buy a quart of SAE 30 oil for about 12. You have to keep enough oil in the compartment to keep the engine lubricated, and you have to change out the oil just like you change it in your car.

You should change it after a total of 25 hours of usage. Many people just change it annually at the beginning of each season. So, the price of oil will probably end up being more expensive over time than the oil for 2-cycle weed eaters.

Which Has the Price Advantage?

This can be a little more complicated since there are several factors that go into determining the best price. Cheaper doesn’t necessarily always mean it’s a better deal. So, let’s create a summary of possible for each.

For the 2-cycle weed eater:

  • The average price is about 150.
  • Oil can be purchased for about 10.
  • You won’t have to buy oil very often.
  • It’s easier to repair yourself.

For the 4-cycle weed eater:

  • The average price is about 200.
  • Oil can be purchased for about 12.
  • You will probably buy oil more frequently.
  • It may be more difficult to repair yourself.

The 2-cycle weed eater has the advantage based on numbers alone. Remember that brand, model, and how much you want to spend on fuel and oil will affect how much you spend. If you want the cheapest option available, you risk sacrificing quality.

For a comparison of two of the leading brands on the market, see our comprehensive comparison: STIHL vs Echo [Trimmer, Edger, Blower, Chainsaw, Multi-Tool]


There are two types of weed eaters: 2-cycle and 4-cycle. The difference is how the engine works. The 2-cycle engine uses one revolution to complete the cycle while the 4-cycle uses two revolutions to complete the process of creating power and bringing in air, and then release exhaust and compress the air. Since each engine completes the same process differently, they are different sizes, weights, and require different fuel methods.

The pros of the 2-cycle include:

The cons of the 2-cycle include:

The pros of the 4-cycle include:

The cons of the 4-cycle include:

Which is the best option for you? If you need a weed eater for lawn care at home, the 2-cycle weed eater might be the best option. Because it’s lightweight and easy to control, several family members will be able to use it, and it should be less strenuous, so you don’t have to wear yourself out every time you use it.

If you have tough grass to cut or care about your carbon footprint, the 4-cycle is probably better suited for you. It’s heavier and will feel like more of a workout, but it’s great for tough jobs. If you have a lawn care business, you might prefer this weed eater, especially if you want to get more use out of your fuel and use it for longer periods of time.

Paul has a two-acre yard on red clay soil in Southeast Texas. He knows exactly what the challenges are to nurturing a thriving yard in difficult soil.Paul takes a practical approach to yard improvement and enjoys putting best practices and “golden rules of lawn care” to the test.

Best 4 Cycle Trimmer Reviews [year]

If you are a homeowner or a lawn care professional thinking to invest in a new string trimmer in [year], you might be confused about what model to choose due to the multitude of string trimmers available on the market.

With so many models and so many characteristics, it might be difficult to decide which is the right tool for you.

For this reason, today I am going to talk about the 4-cycle string trimmers, explaining why they are better compared to the 2-stroke tools.

I also made a list of the best 4 cycle trimmer reviews to help you choose the best one for your lawn care.

AT A GLANCE: Our Top Picks for 4 Cycle Trimmers

Why Should You Buy A 4 Cycle Trimmer?

When it comes to buying a gas-powered string trimmer, you will basically have to choose from two options of engines, 2-cycle or 4-stroke engines.

Most users are accustomed to the 2-cycle weed eaters, and many homeowners even believe that 2-cycle engines are better because they are more powerful and more lightweight. So, why should you buy a 4-cycle string trimmer?

Well, the main reason is because they deliver better results.

A 4-cycle engine produces more torque, a characteristic that will allow you to cut with an incredible ease through any type of grass and weeds. But this is not the only reason to choose a 4-cycle tool.

4-cycle, 2-cycle, weed, eaters, pros

In addition to generating more torque, the 4-cycle engines produce fewer emissions, thanks to the way they are built. In fact, most of the 4-cycle engines are CARB compliant, a feature that you might find really useful.

When it comes to starting the tool, the string trimmers powered by 4-cycle engines start faster, which is a further reason to choose a tool with a 2-cycle engine.

The string trimmers powered by 4-cycle engines are also more comfortable to use. First of all, they are quieter compared to the 2-cycle engines, an important aspect especially if you are going to use the trimmer for long periods of time. Secondly, the tools powered by 4-cycle engines produce fewer vibrations. This will reduce the fatigue and you will be able to use the tool for a longer time.

The only downside of the 4-cycle engines is that they are heavier compared to the 2-cycle ones. However, this minor disadvantage can be easily overlooked if you choose a quality trimmer that is well balanced.

Now that you know why you should choose a 4-cycle trimmer, let’s find out what other things you should consider before deciding which tool to buy.

How To Choose A String Trimmer

The most important aspect of a string trimmer is, without a doubt, the cutting performance. If you want to make sure that the model you choose is reliable and durable, here are a few things to consider:

  • Cutting string: depending on the characteristics of your lawn, you should choose a string trimmer with a thinner or with a thicker cutting line. There are a variety of models available on the market, but if you want to achieve professional results I suggest to choose a tool that uses a cutting line with at least.095 inches in diameter.
  • Line feed: the bump feed spools could be annoying to use, but will allow you to have a better control on the amount of line that is used. On the other hand, the automatic feed spools will make trimming easier, but these tools might waste a lot of line. Based on your personal preferences, you should choose the type of trimmer that suits your needs.
  • Cutting width: depending on the size of your lawn, you should choose a string trimmer with a cutting width between 10 and 12 inches. If the lawn is larger, you could even search for a model that has a cutting width larger than 12 inches. Some manufacturers also produce string trimmers with adjustable cutting swaths that are more versatile to use.
  • Cutting attachments: if you have to deal frequently with tall grass or stubborn weeds than you should also consider the possibility to replace the cutting line with a cutting blade. Some manufacturers propose some models of string trimmers with these characteristics.

Besides the cutting characteristics, you should also consider the ease of use and the comfort. Therefore, you should choose a tool with the following characteristics:

  • Telescopic shaft: this feature will allow you not only to adjust the length of the shaft to your own height, but it will also allow you to trim the grass from the hard-to-reach areas of your lawn. If the tool you like doesn’t have a telescopic shaft, at least choose one with a long shaft.
  • Adjustable handle: in addition to the telescopic shaft, you should also check the possibility to adjust the handle’s position. When it comes to the handle, you should also choose a model with an ergonomic handle and it would be even better if the handle is padded or provided with another type of soft-grip, as this feature will reduce the level of the vibrations.
  • Anti-vibration system: besides the padded handle, a tool that is equipped with an anti-vibration system is more comfortable to use. Balance: even if the 4-cycle tools are probably the heavier models, if the gravitational center of the engine is properly balanced, the tool will be extremely comfortable to use.

The last thing to consider is the versatility of the tool. Some string trimmers are manufactured as dual-function tools, featuring cutting heads that can easily transform from trimmer into an edger, while others accept a series of attachments that completely transform the string trimmer into another outdoor tool.

Depending on your necessities, you should decide what type of string trimmer to buy. Now, read the best 4-cycle trimmer reviews and choose your tool.

Now Let’s Get Started On The Top 4 Cycle Trimmer Reviews…

Husqvarna 324L Straight Shaft 4-Stroke Gas String Trimmer

One of the most popular 4-cycle trimmers available on the market is the Husqvarna 324L, a string trimmer powered by a powerful 25cc engine. In addition to being powerful, this string trimmer is also versatile, accepting 13 different attachments that transform the tool from a string trimmer into an edger, blower, and cultivator, to name just a few.Extremely lightweight for a 4-cycle trimmer, the Husqvarna 324L weighs only 11.24 pounds. The cutting quality is ensured by the professional-grade.095 inches line that, in the case of necessity, can be replaced with a metal blade. Husqvarna manufactures a few cutting blades that are compatible with this model.

Husqvarna 224L 25cc 4-Stroke Straight Shaft Gas Trimmer

Another popular 4-cycle trimmer from Husqvarna is the 224L, a tool that is also powered by a 25cc engine. In many ways similar to the 324L, this string trimmer also weighs only 11.24 pounds, being easy to maneuver, and a.095 inches cutting line.However, when it comes to choosing a blade attachment, Husqvarna manufactures only one blade that is compatible with this tool, so you will have fewer options.

If you’re looking for further information on this particular brand, we’ve done an extensive review on all Husqvarna weed eaters.

Ryobi RY34420 30cc Four-Cycle Gas Powered String Trimmer

powerful than the two Husqvarna trimmers described above, this Ryobi RY34420 is actually a string trimmer from a series of tools that are refurbished by the factory. This means that the tool has the functionality of a new Ryobi string trimmer, being reliable and durable.This string trimmer is powered by a 30cc 4-cycle engine and features an 18-inch cutting swath. The power combined with the large cutting width will reduce the time you have to spend caring for your lawn and increase the time you can spend actually enjoying your lawn.

For more detailed information, check out our Ryobi model reviews.

Troy-Bilt TB575 EC 29cc 4-Cycle 17-Inch Straight Shaft Trimmer

Another popular 4-cycle trimmer is the Troy-Bilt TB575 EC, a tool powered by a 29cc engine. This string trimmer has an excellent cutting ability thanks to the professional.095 inches line used and features a Click ‘n Trim bump head.When it comes to the line replacement, this trimmer boasts a convenient quick loading system that will make changing the line an easy and quick operation. The tool also comes with a 2-year warranty, which is a further prove of the high quality of the tool.

Cub Cadet 30 cc 4-Cycle Gas Split-Boom Curved Shaft String Trimmer

The last 4-cycle string trimmer reviewed is the Cub Cadet Split-Boom, a string trimmer powered by a 30cc engine. Boasting a curved shaft, this string trimmer was created to be easily maneuverable, while the 17-inch wide cutting swath will enable you to trim your lawn fast. This string trimmer also boasts a commercial grade cutting head that works with.095 inches line. The head can also be changed with a brush cutter blade, making this tool more versatile.

For more detailed information on this brand, make sure to check out our Cub Cadet weed eater reviews as well.

Conclusion and Final Pick

There are many 4-cycle trimmers available on the market, but the most impressive one is the Husqvarna 324L. This trimmer delivers professional results and it is extremely versatile, representing an excellent option for both residential and commercial users.

The lightweight and excellent balance make this tool easy to use, while the minor flaws that it has will fade away in front of the many wonderful characteristics.

In my opinion, the Husqvarna 324L is the best 4-cycle string trimmer on the market.

If you’re looking for a different type of weed eater, don’t forget to check out our extensive reviews.​

Ryobi 2 Cycle gAS Weed Eater Review & Test #Trimmer

Best Weedeater for 2023 – 10 Gas Models Tested

We take 10 gas-powered string trimmers and put them through our paces to determine who’s king in the Best Weedeater Shootout. Some are 4-cycle and some 2-cycle, but they’re all gas-powered. No batteries or cords here. These are the best of the beasts who tame the lawns.

Who do you think will reign as the champ? Stick around – keep reading – and you’ll find out.

Best Weedeater Shootout – Who’s In?

Here’s a quick look at which string trimmers are in this best weedeater head-to-head comparison. We have the following contenders in alphabetical order:

  • Echo – SRM-2620T
  • Honda – HHT35SLTA – 4-cycle
  • Husqvarna – 525LST
  • Makita – EM2650LH – 4-cycle
  • Ryobi – RY253SS
  • Ryobi – RY4CSS – 4-cycle
  • Shindaiwa – T262
  • STIHL – FS 91 R – 4-mix – 4-cycle running premix (oil and gas)
  • Tanaka – TCG27EBSP
  • Troy-Bilt – TB6044 XP – 4-cycle

How We Determine the Best Weedeater

In determining a ranking for the best weedeater, we want to stay as objective as possible. The less we have based on subjectivity (opinion), the better. Each string trimmer is looked at in detail, used by multiple users, multiple times. We’ve developed a points system, including multiple categories, with a possible total of 100.

We take a look at items like key features, sound-pressure level, and weight. Ergonomics also plays a big role in our calculation. Furthermore, we determine fuel efficiency, tank runtime, time-work testing, and of course, price, and warranty. We also determine a “Value” which is more of a bang-for-your-buck calculation for the best weedeater.

Without further ado, let’s see how it all shakes down in the best weedeater shootout.

Related Shootout: Don’t miss our Best backpack leaf blowers article.

Key Features of the Best Weedeaters

Cutting Swath

All string trimmers come standard with a guard to keep flying debris from hurting the operator. Well, it keeps some of the debris away. Even the best weedeater peppered your legs with grass and weed “shrapnel”. The guard also houses the cutter/blade that keeps the line trimmed a certain length. We measure the distance, in inches, from the center of the trimmer head to the cutter on the guard. Multiply this by two, and you have the cutting swath (diameter).

Our smallest swath belongs to the Makita EM2650LH, at just 16 inches. The largest is the Shindaiwa T262, at a whopping 20 inches! Will this affect cutting speed or getting work done?

Shaft Type

Do the best weedeaters have a one or two-piece shaft? Keeping this a single piece eliminates another area for wear and/or failure. All our “commercial-level” trimmers have a one-piece shaft, and the three “consumer-level” models had two-piece shafts.

The two-piece shaft allows for additional accessories to run on the same powerhead. The three 2-piece models were the Ryobi RY253SS, Ryobi RY4CSS, and the Troy-Bilt TB6044 XP.

Auto Choke

Starting up gas-powered weedeaters, edgers, and blowers can take some time. Typically, when starting the unit cold, you close the choke completely and yank the pull cord until it fires. Then, you open the choke, grab a handful of throttle and pull the cord again. Once the unit fires, you keep it throttled up until it’s warm. Even the best weedeater has to deal with winterization and cold weather startups.

With the automatic choke, you still close the choke fully, then pull until it fires. The choke then opens, pull the cord again, without your fingers on the throttle. The trimmer will fire up at a high idle, without you touching it. Once you touch the throttle, idle will return to normal. This helps warm up the machine quickly, without several extra steps.

The Husqvarna 525LST, Makita EM2650LH, and the STIHL FS 91 R are the only trimmers to include this feature.

The Best Weedeater Have Easier Serviceability

Do the trimmers include the ability to service the unit? As the trimmers are used every day, the heads eventually need to be greased, along with the shaft.

All the trimmers included a service port in the trimmer head, with the exception of the Troy-Bilt TB6044 XP.

Best Weedeater Fuel Efficiency

Fuel efficiency is important, as it’s a direct cost associated with the amount of work being done. All the units in our best weedeater comparison run on gasoline.

Four of the string trimmers are 4-cycle and require only gasoline—no remixing or oil. The Makita EM2650LH, Ryobi RY4CSS, Honda HHT35SLTA, and the Troy-Bilt TB6044 XP are all 4-cycle.The STIHL FS 91 R is also a 4-stroke, but it runs on 2-stroke fuel (premix).

How we tested: For the efficiency test, we used 8 oz. of TruFuel (either 2-stroke or 4-stroke fuel), and we ran the trimmer at Wide Open Throttle (WOT) until they ran out of fuel. Both Ryobi trimmers were the most efficient, running for more than 23 minutes on 8 oz. of fuel.

TruFuel 50:1 Mix and TruFuel 4-Cycle

To keep things equal, we used TruFuel 50:1 Mix for all our 2-cycle weedeaters, and we used TruFuel 4-Cycle for all our 4-cycle tools.

Echo Black Diamond.095 Trimmer Line

We loaded up Echo Black Diamond.095 trimmer line in all our string trimmers. This is Echo’s twisted black line that has excellent cutting qualities and works with all our gas weedeaters.

Tank Runtime

Tank Runtime is probably more of a concern than efficiency since it relates more to labor costs, which tend to be more expensive than the savings of gasoline efficiency.

How many times do I have to stop and walk my weedeater back to the truck/trailer each day?

How we tested: we used the fuel efficiency number (burning 8 oz. TruFuel @WOT) then multiplied by the number of times 8 oz. goes into the capacity of the fuel tank. e.g. If a tank is 16 oz. and the trimmer ran for 20 minutes on 8 oz. We take 20 minutes x 2 (because 8 goes into 16 two times), so tank runtime would be 40 minutes.

The STIHL FS 91 R was not the most efficient, however, it had the best Tank Runtime due to the capacity of the tank.

Best Weedeater Ergonomics


Weight is important with weedeaters because you’re literally holding all that weight in your two hands. The more weight and more time, the more fatigued you’ll be at the end of the day.

We weighed each string trimmer with 8 oz. of fuel in the tank. Also, oil was added to the 4 four-stroke models we had, to give a true representation of the weight as it would be used.

The Husqvarna 525LST is our lightest trimmer, weighing in at only 12.3 lbs. On the flip side, the heaviest contender is the Troy-Bilt TB6044 XP.

Weedeater Sound Testing – Db(A)

Using a weedeater for 10 or 15 minutes straight may not seem to bother your hearing. However, the reality proves to be much different. We measured the sound pressure level (SPL) of these best weedeaters at 50 feet. This covered the ANSI specs, however, we also tested SPL at the operator’s ear.

Hearing protection should be worn with all these models.

The Honda HHT35SLTA was our quietest trimmer, measuring just 74 Db(A) at 50-feet and 96 Db(A) at the operator’s ear. The STIHL FS 91 R was our worst sound offender at 80 and 106 Db(A).

Testing the Best Weedeater Performance

Power Trials – Thick and Thin

Why Power is important: most lawn crews use these string trimmers or weedeaters to keep the grass tamed near hardscaping or flower beds where the mower can’t reach. In addition to this, the string trimmer may be used for cutting back growth in areas that haven’t been touched in a while.

This may be fitter for the work of a brush-cutter, but the reality is the operator’s going to just pull the trigger on the string trimmer in their hand and go at it.

How well do these trimmers cut the grass and how well do they cut thick foliage?

What To Trim?

We tried to make this a little more objective by providing a material that we could cut, measuring the amount of time it took to cut. Cardboard is no match. Even the “weakest” weedeater of the bunch can cut through several inches of solid cardboard immediately.

We then tried corrugated plastic-like political signs you see all over the place during elections. This also proved no challenge. The best weedeaters cut just as quickly as the rest. Even with 5 and 10 pieces glued together…they just cut right through it. Almost immeasurable. Wood and wooden dowels were too inconsistent, and it would typically break the string before completing the task.

Cardboard tubes with ¼”-thick walls seemed to the be a great medium — for the first few seconds. However, once the trimmer would make it halfway through the cardboard tube, the string would break. Most of the time when the string broke, the line would be welded/melted together inside the head.

How About Grass and Weeds!

Finally, why not test the best weedeater with the medium that the tool was made for?! We made a 5’ x 5’ square with PVC. We used the square to lay in the grass, measuring how long it took each trimmer to cut the marked area. Each test was performed several times.

After testing in the “normal” grass, we then moved the weedeaters to thicker and taller foliage. Testing was performed on Central Florida Bahia grass. Bahia is known for it’s tough blades, wreaking havoc on lawn equipment.

Echo’s SRM-2620T cut through the thin stuff the fastest, at just 7.8 seconds. The Husqvarna 525LST was the fastest in the thick stuff, taking only 10.9 seconds to cut through.

Using the Best Weedeaters for Edging

Why is Edging important? If there’s a lot of edging to be done, lawn crews will typically grab a dedicated edger to complete the task. However, it’s not uncommon to do quick edging or to just use the string trimmer in your hand to do the work.

How well does each model handle this and does their blade guard get in the way?

Echo’s guard on the SRM-2620T deems to be the least intrusive on edging, but the Tanaka TCG27EBSP and Honda HHT35SLTA guards keep reading the line of sight more difficult.

Best Weedeater Price and Value

Why it’s important: When we tally all the results and compare that to the price of each trimmer, we understand value better. For some, it’s getting the cheapest nailer that will do the job. For others, it’s getting the best bang for your buck.

In this case, the cheapest is also the best value – Ryobi RY253SS with a 119 price tag. The worst value belongs to the Honda HHT35SLTA with a 379 price.


Also going into the Value equation is the warranty from each weedeater manufacturer. We look at each warranty on two levels: for the consumer and commercial user. All the string trimmers include a warranty for commercial and consumer, with the exception of one.

Troy-Bilt only warranties the TB6044 XP to the consumer for 3 years and nothing for the commercial user. Ryobi offers a 90-day warranty for commercial use and 3-years for consumers.

The Tanaka TCG27EBSP weedeater is warranted for 2 years for commercial use and 7 years for the consumer.

Final Results – Out of 100 Points

10th place, 63.0 pointsTroy-Bilt TB6044 XP

Pros Offers consumers some flexibility with the split shaft, able to add accessories and different heads.4-stroke engine – no worry with premixing fuelSufficient power

Cons Non-serviceable headNo commercial warrantyGrease starting to seep from the head in just a few hours of use.Just a bit short, so it feels a little awkward, especially if you’re tall.Throttle trigger safety is a pain, if you don’t press hard in a certain area, it doesn’t unlock the throttle.

9th place, 72.3 pointsTanaka TCG27EBSP

Pros Sufficient powerBest weedeater warranty of the bunch. 2-years commercial and 7-years consumer warranty

Cons Only a single-stage foam air filter – very thin piece of foamGuard is somewhat intrusive on the work area

8th place, 78.3 pointsRyobi RY4CSS

Pros Offers consumers some flexibility with the split shaft, able to add accessories and different heads.4-stroke engine – no worry with premixing fuelSufficient powerMost Efficient weedeater (with the Ryobi brother)

Cons Auxiliary handle doesn’t tighten, due to a plastic retaining wing-nutJust a bit short, so it feels a little awkward, especially if you’re tall.

7th place, 80.6 pointsRyobi RY253SS

Pros Offers consumers some flexibility with the split shaft, able to add accessories and different heads.Sufficient powerCheapest gas-powered weedeater we testedHighest Value WeedeaterMost Efficient (with the Ryobi brother)

Cons Auxiliary handle doesn’t tighten, due to a plastic retaining wing-nutJust a bit short, so it feels a little awkward, especially if you’re tall.

6th place, 81.3 pointsHonda HHT35SLTA

Pros 4-stroke engine – no worry with premixing fuelVery good powerLargest engine – 35 ccCan be converted to a brushcutter as wellEasiest starting weedeater – typical with a Honda engine

Cons Heaviest weedeater – due to it being the largest engineGuard is somewhat intrusive on the work areaMost expensive

5th place, 84.3 pointsShindaiwa T262

Pros Very good power and performanceLargest cutting swath – 20 inches – great for cutting grass around and over water (ditches, marsh, etc.)Speed-Feed head makes it quick and easy to install new line

Cons With the large swath, it does bog a little when diving into deep stuff. Recovers nicely.Just didn’t seem to be in front in any certain category.

4th place, 87.9 pointsStihl FS 91 R

Pros Excellent Power and performanceBest Runtime – 1 hour and 2 minutes at WOT on a tank.Automatic choke – turn on full-choke, then it returns to partial-choke where it runs at high idle until you pull the trigger, then the weedeater returns to normal idle.Always On, until you push the Stop button. Only need to push it once, and it shuts the engine off. Then it’s ready for starting again.

Cons 4-stroke engine, but it still requires premixOne of the heaviest – 13.9 lbs with fuelLoudest – 80 and 106 Db(A) (at 50ft and at the user’s ear)

3rd place, 89.0 pointsHusqvarna 525LST

Pros Excellent PowerAutomatic choke – returns to high-idle until you hit the throttleAuto-return power switch – always On, until hold the spring-loaded slide to Stop, then it returns to On.Lightest string trimmer – just 12.3 lbs with fuel in the tank.Fastest in the heavy foliage – 10.7 seconds2:1 ratio high-torque head

Cons Throttle trigger is a bit flimsy.

2nd place, 90.7 pointsECHO SRM-2620T

Pros Excellent PowerSpeed-Feed head makes it quick and easy to install new lineFastest time for performance test2:1 ratio high-torque headOnly 0.3 lbs heavier than the lightest trimmer

Cons 2nd most expensive

1st place, 90.8 pointsMakita EM2650LH

Pros 4-stroke engine – no worry with premixing fuelExcellent power2nd in Tank Runtime

2nd Lightest – only 0.3 lbs heavier than the lightest trimmer

Easy to install line in the head, without taking apartExcellent balance – very easy to maneuver

Cons Smallest cutting swath – 16-inchesDoesn’t allow quite as much line as the others

Not recommended to hang by the powerhead

Final Conclusion

Well, we let the numbers speak for themselves. Quite frankly, this fight was not all about power, per se. Reason being is that all the manufacturers are putting very good power to the ground. It’s really amazing what these small displacement powerplants can output. With all of them able to get the job done, it came down to ergonomics, feature set, and value. A pound or more extra weight can really get to you after hours of work.

We really didn’t add or subtract based on 2-cycle or 4-cycle. 2-cycle trimmers require oil to be mixed in the gas, however, 4-cycles need crankcase oil and oil changes – even valves adjusted after some time. We consider these a wash in terms of benefit. Now, in terms of preference, that’s up to you.

We would have like to have seen RedMax and Efco in the fight as well, but they declined to enter the best weedeater shootout. Let us know how we did and if you would like to see any other trimmers in the mix.

The Difference Between a 2-Stroke and 4-Stroke Engine

Throughout the many changes and innovations in automotive and engine design, one thing has remained a constant — the design of two-stroke and four-stroke engines. While you may have heard of these types of engines before, you may be asking yourself what the difference is between them. Here’s what you need to know about the efficiency and maintenance of each type of engine.

What Is the Difference Between a 2-Stroke and 4-Stroke Engine?

The main difference between a 4-stroke engine and a 2-stroke engine is that a 4-stroke engine goes through four stages, or two complete revolutions, to complete one power stroke, while a 2-stroke engine goes through 2 stages, or one complete revolution, to complete one power stroke. This means a 2-stroke engine can potentially produce twice as much power as a 4-stroke engine and also weigh less.

4-Stroke Engine

Four-stroke engines are fuel-efficient and environmentally-friendly. They operate in four steps:

  • Intake: The intake valve is open, and fuel is drawn in with a downward stroke.
  • Compression: As the piston moves upward, the fuel is compressed.
  • Power: After the fuel is compressed, it is ignited to produce the engine’s power.
  • Exhaust: The exhaust valve opens, and the exhaust gases exit the cylinder.

2-Stroke Engine

A two-stroke engine combines the compression and ignition steps on the upstroke and the power and exhaust steps on the downstroke. This process requires fewer moving parts for easier maintenance, but it does provide less torque.

  • Upstroke (ignition/compression): The piston goes up, air and fuel enter the crankcase. The fuel-air mixture is compressed and ignited.
  • Downstroke (power/exhaust): Once the fuel is ignited, the piston is pushed down, and the exhaust is expelled.

Both engine types have their pros and cons, and the one that will work best for you depends on the needs of your application. While 4-stroke engines perform well and generally last longer than 2-stroke engines, 2-stroke engines are lighter and faster than 4-stroke engines.

Comparing 2-Stroke and 4-Stroke Engines

When comparing two- and four-stroke engines, their main difference is in how they operate. Both engines use the combustion cycle to produce energy.

The main difference between a 2- and 4-stroke engine is that a 4-stroke engine goes through four stages, or two complete revolutions, to complete one power stroke. A 2-stroke engine goes through 2 stages, or one complete revolution, to complete one power stroke.

During the combustion cycle in an engine, the piston moves up and down within a cylinder where the piston travels. A stroke is when the piston moves from the top center to the bottom of the cylinder. During a combustion cycle, while the piston moves down the cylinder, it captures air and gas. As the piston moves back up to the top, the exhaust valve opens to expel the exhaust.

Two-stroke engines work by combining more functions into one piston-movement; during the upwards movement of the piston (compressing the air/fuel/oil mixture) in the combustion chamber, underneath the piston a fresh mixture of air/fuel/oil is drawn in the hermetically closed crankcase.

A 4-stroke engine is a very common variation of an internal combustion engine. During engine operation, pistons go through 4 events to achieve each power cycle. The definition of an event is an up or down piston motion. Upon completion of the 4 events, the cycle is complete and ready to begin again.

While the combustion cycle is relatively similar for both engines, they differ in the number of strokes the piston must move to complete the process. A two-stroke engine completes the five functions of the combustion cycle (intake, compression, ignition, combustion and exhaust) in two piston strokes. A four-stroke engine, on the other hand, completes a combustion cycle after four piston strokes. Another way to think of this process is as one crankshaft revolution for a two-stroke engine and two crankshaft revolutions for a four-stroke version.

Pros of a 2-Stroke Engine

There are many benefits to using a two-stroke engine. Some advantages include:

  • A two-stroke engine weighs less compared to a four-stroke engine and requires less space.
  • The engine’s turning movement is even since it takes one power stroke for each crankshaft revolution.
  • This engine’s design is simple due to the lack of a valve mechanism.
  • During operation, this engine creates less friction on parts and has increased mechanical efficiency.
  • This engine features a significant power boost with a high power-to-weight ratio.
  • The engine can operate at cold and hot external temperatures.
  • The engine has inlet and exhaust ports.

Cons of a 2-Stroke Engine

Using a two-stroke engine has some disadvantages such as:

  • Two-stroke engines consume more fuel, and only a small amount of fresh charges mix with gasses from the exhaust.
  • You may experience a high amount of vibration or noise during operation.
  • This engine has a shorter life span since it incurs increased wear and tear.
  • A two-stroke engine has a narrow power Band, or range of speed where the engine is most efficient.
  • This engine type may become unstable while idling.
  • You may experience issues with scavenging with this engine.
  • A two-stroke engine does not burn as cleanly, leading to a higher level of air pollution than a four-stroke engine.

Applications of a 2-Stroke Engine

You can use a two-stroke engine in a variety of applications. Outdoor power equipment such as chainsaws, blowers, trimmers and hedge trimmers use a two-stroke motor. You can also use a two-stroke engine in transportation and equipment devices such as outboard motors, motorcycles or dirt bikes.

Pros of a 4-Stroke Engine

Using a four-stroke engine offers a variety of benefits. Some of these advantages include:

  • Four-stroke engines yield higher levels of torque at a lower RPM during operation.
  • A four-stroke engine only consumes fuel once every four strokes, making it a more fuel-efficient engine option.
  • Four-stroke engines give off less pollution because they do not require oil or lubricant mixed in the fuel.
  • These engines are durable and can withstand higher amounts of wear and tear.
  • You will not need additional oil with a four-stroke engine.
  • A four-stroke engine produces less noise and vibration during operation.

Cons of a 4-Stroke Engine

Four-stroke engines also have some disadvantages such as:

  • The additional components in the four-stroke design make these engines heavier compared to the two-stroke version.
  • A four-stroke engine contains more parts and valves, making repairs and maintenance more expensive.
  • Since it only receives power once every four rotations of the piston, this design is less powerful than a comparable two-stroke engine.
  • This engine design features a gear and chain mechanism, which can cause complications during maintenance.
  • A four-stroke engine requires regular maintenance, leading to an increase in costs for products and services.

Applications of a 4-Stroke Engine

Four-stroke engines are a great choice for a variety of uses, such as outdoor power equipment and vehicles. One of the most common examples of equipment powered by a four-stroke engine is a lawnmower. You can also find these engines in a 7cc RC engine to a Cat C18 diesel engine with approximately 800 horsepower.

Which Engine Is Better?

There is no single answer to the question of whether a two-stroke engine or four-stroke engine is better — your selection depends entirely on your personal preferences and applications.

Before you select an engine, it’s also essential to understand each type’s lubrication needs. A two-stroke engine requires a mixture of oil and fuel, which ignites when the engine is in operation and continually consumes the oil. In a four-stroke engine, the oil flows back to the crankcase after lubricating the different engine parts.

The job of the lubrication system is to distribute oil to the moving parts to reduce friction between surfaces that rub against each other. Friction damages not only moving parts, but the engine’s efficiency as well. Reduced efficiency means horsepower and torque, reduced engine life, increased maintenance costs, and increased emissions.

Ultimately, understanding the difference between two-stroke and four-stroke engines and their needs will help you make the right choice and be proactive in performing maintenance throughout the life span of your engine.

Choose Prime Source Parts and Equipment for Your Small Engine Needs

With the differences between 2-stroke and 4-stroke diesel engines, there is a lot to consider.

At Prime Source Parts and Equipment, we offer product support solutions for owners of two-stroke and four-stroke engines. We have a vast network of suppliers to help our customers find the right parts for all their needs.

Our expert staff of OEM certified and factory-trained technicians can help you find the best product for any project whether you are looking for two-stroke or 4-stroke engine parts or services. For more information or if you have any questions, contact us by calling 704.610.5081 or filling out our contact form today!