9 Best Gas String Trimmers of 2023 Reviews. Weed wacker gas line

Best Gas String Trimmers of 2023 [Reviews]

String trimmers, also known as weed wackers, weed eaters, or weed whips, are an essential tool for maintaining a manicured lawn. Whether you’re cleaning up your edges or trimming the spaces your lawn mower can’t reach, a good string trimmer is a must-have for lawn owners.

Gas-powered string trimmers can operate all day without pausing to charge and aren’t tethered to an outlet like corded trimmers. If you have a large yard or thick brush on your property, you may need a gas trimmer to keep your landscape looking sharp.

To help you pick the best gas string trimmer for your yard and budget, this article includes our picks for the top 9 gasoline-powered trimmers, as well as a helpful buyers guide and FAQ. To come up with our top 9 list, we looked at the power, utility, weight, and price of gas-powered string trimmers.

Because online shopping are always in flux, we’ve provided an estimated range based on multiple sources.

We also have listed multiple buying options, when available, to make it easy to compare prices.

Top 9 Gas String Trimmers — Reviews

Best Overall and Category Champs

1. Best Overall: Husqvarna 128LD 28 cc 17” String Trimmer

2. Best Curved Shaft: Husqvarna 128CD Curved-Shaft Trimmer

3. Most Versatile: Craftsman WS235 Brush Cutter and String Trimmer

4. Best Commercial Pick: Proyama 42.7 cc Brush Cutter and Trimmer

Runners-Up Best Gas String Trimmers

5. Ryobi RY253SS 25 cc 18” Trimmer

6. Poulan Pro PR28SD 28 cc 17” Trimmer

7. Remington RM25C 25 cc 16” Curved Shaft Trimmer

8. Remington RM25C 25 cc 16” Curved Shaft Trimmer

9. Wild Badger Power WBP52BCI 52 cc Brush Cutter and Trimmer

Best Overall: Husqvarna 128LD 28 cc 17” String Trimmer

A high-performance model from a trusted brand, the Husqvarna 128LD is the gold standard of string trimmers.

Here are the features we liked the most:

• 28 cc, two-cycle engine provides plenty of cutting power without weighing a ton.
• “SmartStart” recoil system, which reduces starting cord resistance by 40%.
• Simple stop/return switch quickly cuts power to the string head.
• A translucent fuel tank lets you know how much juice you have left.
• Several attachments available, including a wheeled edger, pole saw, and tiller.

This gas string trimmer is one of the more expensive options on our list, but this durable Husqvarna trimmer is a great investment and will stand up to years of heavy use.

Note: Because this string trimmer has a 2-stroke engine, it requires special oil to be mixed with gasoline, which is included with purchase.

Specifications

Engine Type: 2-cycleEngine Capacity: 28 ccCutting Width: 17 inchesWeight: 11 lbsPrice Range: Moderate

Pros	Cons
✓ Easy start✓ Best-in-class engine power✓ Wide cutting swath for efficiency	✗ Pricey✗ Attachments are expensive

Best Curved Shaft: Husqvarna 128CD Curved-Shaft Trimmer

With the same engine and features of our top-pick gas string trimmer, the Husqvarna 128CD is the clear choice for a curved-shaft model.

What is the advantage of a curved shaft string trimmer? A curved shaft is more ergonomically effective than a straight one. With better weight distribution, it’s easier to hold close to the ground while you remain upright.

Like its straight-shafted twin, the 128CD features a 28 cc engine and Husqvarna’s “SmartStart” system. The translucent fuel tank lets you keep an eye on your fuel, and the quick stopping switch helps keep you safe.

At 11 pounds, this is a lighter option gas string trimmer that puts ease-of-use first. The only downside of using a curved shaft string trimmer is that it can be harder to get in tight spots and underneath fences.

Specifications

Engine Type: 2-cycleEngine Capacity: 28 ccCutting Width: 17 inchesWeight: 11 lbsPrice Range: Moderate

Pros	Cons
✓ Easier to hold and use✓ Powerful engine✓ Wide cutting swath	✗ Harder to weed in tight spots✗ Expensive attachments✗ Pricey

Most Versatile: Craftsman WS235 Brush Cutter and String Trimmer

The Craftsman WS235 comes as a 2-in-1 weed wacker and brush cutter, saving you the expense of buying separate attachments. With a string trimmer head for regular use and a heavy-duty blade for cutting through thick brush, this versatile trimmer gives you a lot of bang for your buck.

The 27 cc engine offers great cutting power, and the heavy.095-inch line cuts through weeds with ease. An 18-inch cutting swath helps you trim more in less time.

This gas string trimmer comes with an included shoulder strap and ergonomic J-shaped handle to make handling easier.

Bonus Points: This Craftsman gas string trimmer is compatible with a full line of Craftsman TrimmerPlus accessories for even more versatility.

Downside: The nut that changes the cutting head of this string trimmer can be awkward, as it’s bolted on with reverse threads. Many customer reviews note this as a failing, as the reverse thread is not clearly marked.

Specifications

Engine Type: 2-cycleEngine Capacity: 27 ccCutting Width: 17 inchesWeight: 13 lbsPrice Range: Moderate

Pros	Cons
✓ Bladed brush cutter included✓ Powerful✓ Shoulder strap included	✗ Heavy✗ Awkward to change cutting heads

Best Commercial Pick: Proyama 42.7 cc Brush Cutter and Trimmer

Proyama makes commercial-grade power equipment for lawn care industry professionals, which explains the raw power of this brush cutter and trimmer and its shoulder-mounted design.

With a massive 42.7 cc engine, this trimmer can cut through thick brush and saplings with ease. It comes with a 9-inch chainsaw-tooth blade, a 30-tooth brush blade, and a triangular mowing blade.

When the string trimmer head is used, it delivers an 18-inch cutting swath. The handlebar-style grip and smooth trigger action are designed for comfortable all-day use, and the included shoulder harness reduces engine vibration. The shaft splits in two for easy transport and storage.

This package includes all the accessories you’ll need. Besides the multiple blade attachments, this Proyama trimmer comes with safety goggles, ear protection, gloves, a fuel canister, and a tool bag.

This is a good choice for homeowners who have woods or wild growth encroaching on the border of their lawns.

Specifications

Engine Type: 2-cycleEngine Capacity: 42.7 cc Cutting Width: 18 inchesWeight: 20 lbsPrice Range: Expensive

Pros	Cons
✓ Professional power✓ All-day operation✓ Cuts through all types of foliage✓ Tons of included accessories	✗ Very heavy✗ Difficult to start

Runners-Up:

Ryobi RY253SS 25 cc 18” Trimmer

Ryobi’s gas string trimmer delivers excellent power over a wide 18-inch swath. It has a universal attachment head that allows the owner to purchase a variety of off-brand blades and accessories, making it an adaptable choice.

The RY253SS is a less expensive option for its power class but is a few pounds heavier than other similarly-powerful trimmers.

Specifications

Engine Type: 2-cycleEngine Capacity: 25 ccCutting Width: 18 inchesWeight: 14 lbsPrice Range: Moderate

Pros	Cons
✓ Universal attachments✓ Good power✓ Wide cutting swath	✗ Heavy

Poulan Pro PR28SD 28 cc 17” Trimmer

With a 28cc 2-cycle engine, this Poulan trimmer delivers great performance at a reasonable price. The “SureFire” fuel delivery system and spring-assisted starter make firing up the PR28SD a breeze.

A variety of separately sold attachments, including a cultivator and a blower, are compatible. The long shaft makes this a great choice for taller customers.

At 14 pounds, this Poulan Pro trimmer can feel quite heavy after prolonged use.

Specifications

Engine Type: 2-cycleEngine Capacity: 28 ccCutting Width: 17 inchesWeight: 14 lbsPrice Range: Moderate

Pros	Cons
✓ Easy starting✓ Long straight shaft	✗ Heavy

Remington RM25C 25 cc 16” Curved Shaft Trimmer

The Remington RM25C is a compact curved-shaft trimmer that’s easy on the body and the wallet. Its ergonomic shape is designed for balance and comfort.

This string trimmer comes loaded with a durable.095-inch line, which is fed with an intuitive bump system. The 25 cc engine delivers more than enough power for standard weeding.

The curved-shaft model is better for shorter operators. Taller customers have reported more success with Remington’s RM25S straight shaft version.

Specifications

Engine Type: 2-cycleEngine Capacity: 25 cc Cutting Width: 16 inchesWeight: 13 lbsPrice Range: Inexpensive

Pros	Cons
✓ Ergonomic shape✓ Affordable price tag	✗ Shaft not adjustable for tall operators

Husqvarna 324L 4-Cycle 18” String Trimmer

Husqvarna’s take on a 4-cycle weed wacker is a more expensive option, but it can run for extended periods and makes quick work of heavy brush. 4-cycle engines are quieter and run on fuel straight from the pump.

Husqvarna products are known for their reliability, performance, and durability, and the 324L is no exception. The high price tag may be a dealbreaker for some customers, but if cost is no object this commercial-grade trimmer is a solid choice.

Specifications

Engine Type: 4-cycleEngine Capacity: 25 cc Cutting Width: 18 inchesWeight: 14 lbsPrice Range: Expensive

Pros	Cons
✓ Quiet✓ No fuel mixing required✓ Durable	✗ Expensive✗ Heavy

Wild Badger Power WBP52BCI 52 cc Brush Cutter and Trimmer

The most powerful trimmer on the list is the Wild Badger Power WBP52CI. With a massive 52 cc engine, this commercial-grade machine is built with heavy brush clearing in mind.

The WBP52BCI is very reasonably priced and considerably less expensive than other commercial trimmers in its power class. It comes with a standard brush-cutter blade, but other accessories are sold separately. It’s compatible with a variety of attachments and can cut through trees up to 4 inches thick with the right chainsaw-tooth blade.

The massive power comes with a lot of added weight, so a shoulder harness is an essential purchase.

This is an affordable entry-level commercial trimmer and a great choice for professional or residential users.

Specifications

Engine Type: 2-cycleEngine Capacity: 52 cc Cutting Width: 17 inchesWeight: 22 lbsPrice Range: Moderate

Pros	Cons
✓ Very powerful✓ Affordable✓ Universal (off-brand) accessories compatible	✗ Accessories sold separately✗ Very heavy

Buyers Guide: Gas String Trimmers

Gas string trimmers are the industry standard for lawn care professionals and residential operators alike. Gas engines are reliable and can quickly be refueled in the field. Though they require considerably more maintenance than electric string trimmers, they’re the better option for dealing with thicker weeds and brush.

Even with advancements in battery technology, the best electric string trimmers can’t beat the cutting power and longevity of gas string trimmers.

This buyers guide will outline the key specs to look for when purchasing a gas trimmer, and help you make an informed decision.

What to Look for in a Gas String Trimmer

The most important factors to consider when buying a gasoline-powered string trimmer are:

We’ll take a look at each of these factors to give you a better idea of the range of products on the market and choose the trimmer that best fits your needs and budget.

Engine Power

Because horsepower is a variable measurement, the easiest stat to look at when determining an engine’s consistent output is its capacity. Measured in cubic centimeters (cc), this lets you know how much fuel is burning with each stroke of the motor. A higher capacity means more power in each stroke and more torque.

High-powered engines will enable the cutting of thicker brush. If you’re planning to use your trimmer on regular lawn grass, you can save money and strain by going for a lighter, lower-power option. However, if you have wooded areas or wild growth on your property you may need to invest in a powerful brush cutter.

Utility

Different trimmers have different capabilities. Most of them come with the option to add certain attachments, such as a cutting blade or edging wheel. Knowing what tasks you’d like to accomplish before you purchase will ensure you buy the correct tool for your lawn.

The cutting width of a trimmer will also determine its utility and efficiency. A wider swath will enable you to cut more with each pass, saving you time and effort.

Weight

An important factor for any handheld tool, a trimmer’s weight will partially determine the length of time it can be used. Even professionals get tired lugging a 20-pound weed wacker around all day. Consider your limits and purchase something that will be comfortable to use.

If you need to purchase a heavier tool for the added power, shoulder straps are available that take the load off your arms, allowing comfortable regular use.

Price

Residential gas weed wackers generally cost between 70 and 200, with high-end and commercial models costing as much as 400. The wide price range makes it easy to find something that fits your budget.

FAQ About Gas-Powered String Trimmers

Our head-to-head reviews show that the Husqvarna 128LD (or CD, depending on shaft preference) is the most reliable trimmer on the market.

Electric trimmers have come a long way in the last two decades. Modern battery-powered trimmers, especially ones with a high-voltage battery, can deliver comparable power to gas, without the emissions and maintenance that come with burning fossil fuels.

Gas engines still have the upper hand when it comes to heavy-duty work. Very few electric trimmers can handle saplings or wooded brush, so your needs will depend on the type of foliage you plan to cut.

Additionally, some areas of the U.S. are encouraging or requiring more power tools to be powered by electricity, so it’s a good idea to check your local and state regulations before committing to gas.

Most professionals and enthusiasts use straight-shafted trimmers, as the shape makes it easier to trim in hard-to-reach places. Taller people, especially over 6 feet, often say a straight shaft is more comfortable as well.

For most people, a curved shaft will distribute the trimmer’s weight more ergonomically, putting less strain on the back and shoulders.

Gas weed eaters are sold at a wide range of prices. With less expensive models costing under 100 and higher-end models going for as much as 350 or more, your budget is an important consideration. With fuel, oil, and accessories adding costs, plan to spend around 200 for a well-made, effective trimmer.

When to Call a Lawn Care Pro

Don’t have the time to keep your weeds and edges trimmed and sharp? Lawn Love pros can give your yard a professional manicure at affordable prices. Call 800-706-4117 to see how a professional lawn care crew can show your yard some Lawn Love.

Lawn Love participates in the Amazon Services LLC Associates Program and other retailer affiliate programs. Lawn Love may earn revenue from products promoted in this article.

Main Photo Credit: iStock photo with text overlay

Best String Trimmer Reviews 2023 – Gas, Cordless, and Electric

Whether you call it a weed eater, weed wacker, weed trimmer, or something else, string trimmers have the same fundamental concept—spin trimmer line fast enough for the tips to cut grass. Ask a random sampling of five people, and they’ll likely tell you five different models for the best string trimmer. We asked our not-so-random team to dive in and offer their recommendations for everything from homeowners with small lawns to professional lawn care crews.

Best String Trimmer Overall for Professionals

Echo X-Series String Trimmer SRM-2620T

There’s a ton of debate about the best gas string trimmer overall, and Echo consistently shows up in it with their X-Series SRM-2620/2620T model. The only difference between the two is the “T” model has 2:1 high-torque gearing, and we generally recommend that one for professional use.

This model balances all things well. The 25.4cc engine keeps the weight reasonable (12.5 pounds dry) and is consistently easy to start. In terms of power-to-weight ratio, the 2620T is as good as it gets. Holding just under 21 ounces of fuel, it has solid runtime. It’s also highly maneuverable and the narrow guard gives you great sightlines on the 17-inch cutting swath. As an added bonus, the Speed-Feed 400 head makes line changes simple.

Best String Trimmer Overall for Homeowners

EGO PowerLoad String Trimmer with Line IQ ST1623T

For homeowners, it’s a pretty easy call to make the switch to a battery-powered system if it’s in your budget. EGO consistently puts out some of the top-performing and lowest-vibration string trimmers on the market.

Better yet, they tend to lead in technology development and have pushed the bar forward once again with the ST1623T. It features PowerLoad—a technology that lets you load line easier than ever. Just thread your new line to the halfway point in the head, press the PowerLoad button, and it automatically winds.

There’s also line IQ. This is an automatic feeding system that keeps your line at 16 inches without having to bump the head as you go along. Throw in a telescoping carbon fiber shaft and it’s pretty easy to see why it’s our choice as the best string trimmer for homeowners.

Price: 197 bare, 299 with 4.0Ah battery and charger

Best Gas String String Trimmer

STIHL Professional String Trimmer FS 91 R

Echo’s 2620T was our pick for the best overall professional string trimmer, and as a gas model, it’s obviously the best gas string trimmer in our book as well. Not far behind is STIHL’s workhorse—the FS91. This 16.5-inch trimmer’s 28cc engine has plenty of power for trimming lawn grasses and even sees some farm and ranch work. At the same time, its 12.1-pound dry weight is easy to manage and its 24-ounce fuel tank offers impressive trigger time between fill-ups.

Of course, STIHL’s extensive dealer and service network is a major plus of owning its products. When you need regular maintenance or on the off chance your trimmer unexpectedly needs a repair, you can get it back in the game quickly.

Best Cordless Battery-Powered String Trimmer

Husqvarna 520iLX Battery-Powered String Trimmer

Built for professional and large property use, Husqvarna’s 520iLX is a cordless battery-powered string trimmer that should be on your radar. Its performance is right on for hitting lawn grasses and we like the reverse direction button to release tangled grass.

It’s other characteristics that set it apart, though. The bare trimmer weighs just 6.6 pounds and adding a battery keeps it well under the 10-pound mark. It’s one of the lightest, most well-balanced trimmers you can get with a professional build.

From there, it has extremely low vibration and while the noise level isn’t the lowest we’ve tested, its tone is far less irritating than other models.

Husqvarna does have a 525iLX model that’s a bit higher up the food chain, but the 520 is 100 less and for that price, we’ll keep running it until we can’t anymore.

Best Electric String Trimmer

Ryobi Attachment Capable Electric String Trimmer RY41135

Just because you prefer plugging in for power doesn’t mean you have to settle for low performance. In a close decision, Ryobi edges out Kobalt in a battle of 10-amp, 18-inch options. In addition to the same power and cutting swath, both trimmers are also attachment capable and reasonably low weight. What pushes Ryobi into the win column as the best electric string trimmer is its easy load head that makes one of the most frustrating parts of owning a string trimmer easier to deal with.

Best String Trimmer for Large Areas

Echo X-Series Brushcutter SRM-2620U

The best string trimmer for large areas where mowers can’t go has to meet several qualifications: it has to have excellent runtime, a large cutting swath, and (in our opinion) needs to be a bike handle design.

Take our top overall professional pick, add a bike handle and harness, and you get the Echo SRM-2620U brushcutter. It has the same engine and trimmer head but swaps a D-handle for the greater support that a bike handle design offers while giving you the same performance with a design that’s much easier to manage for longer periods of time.

Best String Trimmer for Overgrown Areas

Husqvarna Brush Cutter 545FR

If you’re dealing with a lot of overgrowth, be prepared to take your time. In this scenario, we recommend a bike handle string trimmer that’s capable of using a brushcutter head when the going gets really tough. We also recommend going with a bigger engine.

When you need a brushcutter that doesn’t know when to quit, our top choice as the best string trimmer for overgrowth is the Husqvarna 545FR. It has a powerful 45.7cc engine that is happy using a trimmer head, grass blade, or brush cutting blade. From tall grass to saplings, it’s an efficient way to clear areas in a hurry. Toss in a comfortable harness, vibration-dampening bike handles, and easy starting, and this is an easy recommendation for us to make.

Best String Trimmer Line

Echo Black Diamond String Trimmer Line

There’s no question I’m going to start an argument in this section (even within our own office), but the best string trimmer line is Echo’s Black Diamond line. It’s denser than many of the basic lines out there, combining with a sharp-pointed square twist to make it more effective at cutting for its size. Available in 0.095-inch and 0.105-inch sizes, it’s great for almost any trimmer and it’s a fantastic choice for battery-powered options.

Best String Trimmer Brand

If the last section started an argument, this one is going to start an all-out brawl. When it comes to covering the entire scope of string trimmers, Echo, Husqvarna, and STIHL are all consistently part of the conversation with other brands such as Makita and Redmax also showing up. Toss in all-battery brands such as Milwaukee and Greenworks Commercial and the landscape can be confusing.

In our opinion, Husqvarna is the best overall string trimmer brand. They have a wide range that covers homeowners through professionals, gas and battery, and lawn cutting through forestry brush cutting better than anyone else. While STIHL sets the standard for servicing dealer networks, Husqvarna does a fine job of showing up close to home as well.

Best String Trimmer Buying Guide – What We Look For

Gas Vs Battery Vs Electric String Trimmers

Choosing your string trimmer power source has a lot to do with balancing performance, convenience, and price.

Gas offers the most power and when you run out of fuel, a fill-up only takes a few minutes. On the other hand, they’re loud, require maintenance, need an oil and gas mix, and produce emissions.

Battery-powered string trimmers have lower noise, no emissions, and very little maintenance. Plus, today’s performance can match a 30cc engine with roughly the same runtime as a tank of gas. However, cordless string trimmers can be more expensive, and charging a battery can take several hours in some cases.

Electric string trimmers have the benefits of battery-powered ones with the added bonuses of costing less and having near-infinite runtime. They typically don’t reach as high on the power scales, though, and you’re stuck dragging an extension cord all over your lawn.

String Trimmer Line Size

Most string trimmers are rated for somewhere between 0.080 and 0.105-inch line with fringe options below and above that range (one string trimmer even uses zip ties, but we don’t recommend it).

Generally speaking, smaller diameter line doesn’t do as much damage to objects it hits, such as the paint on your exterior walls, wood on your pergola, or irrigation pipes. It also gets the most runtime out of battery-powered string trimmers. As you go up in diameter, the line becomes more destructive and less energy efficient, while holding up better in tough conditions.

For smaller lawns, 0.080-inch line is great for keeping your grass under control, has excellent runtime for battery-powered string trimmers, and lets you put more line on the head compared to larger diameters. This is the minimum line size we recommend in most cases.

0.095-inch line is a great all-around combination for quick cutting, moderate risk of collateral damage, and solid runtime for cordless trimmers. For most cordless string trimmers, this is as thick as we recommend going, though some Pro models are fine moving up a step.

For professional crews, farm and ranch, and other large properties, 0.105-inch line is the way to go. It quickly clears overgrowth and grasses with thicker stalks while holding up to a lot of abuse. It takes more energy to spin the extra mass, though, and you likely need a 30cc engine to make the most effective use of it. If you’re considering battery-powered options, we only recommend 0.105-inch line for high-end professional models specifically designed to handle it.

Cutting Swath

Cutting swath is the diameter your line covers. For smaller lawns, 13 – 14-inch is fine, especially when you’re using a walk-behind mower that can get closer to landscape edges. 15 – 16-inch is a good all-around diameter while professional crews and large property owners get the most out of 17-inches or more.

Weight

String trimmer weight is a big consideration. The more weight is out on the end, the more your back has to work to help you work with it. Shoulder straps help tremendously, especially for the largest gas units and some cordless models come with one as well.

In most cases, pick the lightest string trimmer that has the performance for your toughest jobs with the build quality that will last you many years.

Vibration

Vibration came into center FOCUS with high-performance cordless string trimmers. All gas engines have at least some vibration, and most people didn’t think much of it. That’s still the case for gas, but cordless and electric string trimmers vary widely in how much vibration they create. In many cases, shifting the motor to the head helps reduce the vibration of a drive shaft, even though it moves some of the weight away from your arms.

Features

For the most part, there aren’t a ton of extra features to look for on gas and AC electric string trimmers. However, brushless battery-powered models can have a few that can swing your purchase decision one way or the other. Here are some to keep an eye on:

• Attachment capability (all power types)
• Multiple speeds (including automatic modes)
• Reverse rotation to untangle tall grass
• Faster throttle up
• Compatibility with other lawn care equipment and power tools

Value

We’re big on value—getting the most bang for our buck is always high on our list. It’s not just about what the cheapest string trimmer you can get is. It’s about meeting your top priorities and coming in under budget.

Why You Can Trust Pro Tool Reviews

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We’ve been in business since 2008 covering tools, writing reviews, and reporting on industry news in the construction, automotive, and lawn care industries. Our Pro reviewers work in the trades and have the skills and experience to know whether tools can perform well in the field.

Each year, we bring in and review more than 250 individual products. Our team will put our hands on hundreds of additional tools at media events and trade shows throughout the year.

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We’ll provide more than 500 pieces of new content this year absolutely free for our readers—including objective evaluations of individual tools and products.

The end result is information you can trust because of the editorial, scientific, and real-world professional experience we collectively utilize each and every time we pick up and test a tool.

Replacing Fuel Lines in a String Trimmer

Posted 7 years ago on Thursday, June 23rd, 2016 by James S.

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Ethanol in Gas

The addition of ethanol in gas has been a major problem with small engines, such as string trimmers. In the US, almost all gas pumps have a 10% ethanol blend. A major issue is that it has a tendency to break down rubber, resulting in discoloration and cracking of the fuel lines. If this occurs, replacing fuel lines is the only fix. Fortunately, replacing fuel lines in a string trimmer or other small power tool is not very difficult.

Ethanol is a corn-based alternative fuel. It’s cheaper and more stable (higher octane) than gasoline, but has a lower energy density. High-ethanol blends such as e85, which are 85% ethanol, thus lend themselves well to forced induction applications, where the high octane is desirable to prevent pre-ignition.

For the average consumer, ethanol is less desirable. Because it is less energy dense than gasoline, it results in worse fuel economy. It also has a tendency to attract water, so it is more prone to going bad from sitting than gasoline. Fuel stabilizers, such as Stabil, can help with this issue.

As a final aside, because it is prone to collect water and rot your fuel lines, it is recommended to drain ethanol gas from small outdoor power tools. I tend to drain my string trimmer’s tank in the fall and then run it out of gas before storing for the winter. It seems like too much of a pain to do this every week. This worked fine until I forgot to do it last year. My chainsaw, on the other hand, sees less use, so I always empty it after use.

Symptoms of bad fuel line

So how do you know if your fuel line has gone bad? It can discolor. My trimmer has a clear green-tinted line that had started turning brown. It’ll also become fairly brittle, and you may be able to pinch the hose and see cracks. The primer bulb also won’t seal properly, so you’ll notice more air than usual when you try to prime the trimmer. Lastly, it may not rev up properly when you give it throttle. At higher throttle, it may suck air instead of gas, leaning out your fuel mixture.

If replacing the fuel lines doesn’t work, the other likely culprit is your carburetor. As I describe in my article on replacing a string trimmer carburetor, it’s cheap and easy to buy a remanufactured unit and drop it in. It is worth starting by at least inspecting the line for cracks, though.

Getting replacement fuel line

Easy mode: Home depot sells a “fuel line kit” for Echo trimmers

There are a few ways to go about getting replacement fuel line. The easiest and most expensive is a kit, such as the one pictured. This one costs about 11 at Home Depot, and is a drop-in replacement fuel line for my Echo GT-225, among other string trimmers. Most brands offer something similar. Replacing fuel line in a string trimmer this way is very easy, as everything is already cut to length and ready to go. It also includes a replacement fuel filter, which is usually a couple of bucks by itself, along with a primer bulb and gas cap seal. If you need a carburetor as well, you can buy all of it on Amazon for about 22.

You can also buy a spool of universal fuel line for 4 or so. This will work as long as it’s the right diameter. Simply cut off pieces of tubing to replace what you have. I went the easy route.

Removing the old fuel line

The first step is to completely remove the gas cap. After unscrewing it, this trimmer has a plastic circle that you can pinch and remove.

Then, you can unplug the fuel lines from the carburetor. One line will bring gas to the carb, and the other is a return. These lines look new because they were from an attempt to use some scrap tubing from replacing the wiper hoses in my car. They weren’t quite the right size, although very close.

With the fuel lines undone, you can push the grommet holding all of the fuel lines down into the tank. It can also be pulled out, whichever way works easier.

Pull the grommet and lines up through the fuel fill area

You can then reach down through the fuel fill area, snag the lines and grommet, and pull the whole assembly out. This will include the fuel filter attached to the end of one of the lines. If it’s hard to reach, a bent coat hanger works.

Replacing the line

If you are using universal line, you should at this point cut off pieces of tubing and replace the pieces you just pulled out. In the case of this string trimmer, there is one line in the tank, attached to the fuel filter, and there are three lines outside of the tank. Two of these go to the carburetor, and one goes to a vent. There is also a male-male hose adapter connecting the inside line and one of the outside lines. You can probably reuse this as long as it hasn’t cracked.

If you have a pre-made kit like this, you can begin feeding the fuel filter into the tank as shown. If your fuel filter won’t fit, you can try to put it back in through the fill opening, but it’s difficult to get the grommet back through from inside the tank. Alternatively, you can keep the fuel filter off for now, and put it on the line after the grommet is in place.

The grommet should be able to be pushed into the tank as shown.

Once you get the grommet fully seated, the job is nearly done.

The final piece is to reconnect the two fuel lines to the carburetor. On my trimmer with the factory colored lines they connect as shown. Now, you may have forgotten the order in which these connect. If you do, it’s no big deal: just take a guess and attempt to prime the trimmer. If the bulb won’t fill, you need to switch the lines around.

Replacing the gas cap gasket (optional)

Simply pulls off with a screwdriver or this paint can opener

This step is totally optional. There is a gasket under the fuel cap that my kit included. I figured that I may as well replace it. To do this, simply pry the old one off and slide the new one on.

Wrap-up

Today’s increase in ethanol-blend gas can damage your outdoor power tool fuel lines. Fortunately, replacing fuel lines in a string trimmer or similar power tool is pretty easy. It’s not a bad idea to try to seek out 100% gasoline; there are websites that can help with this. Also be sure to completely empty your trimmer of ethanol-blend gas, even if it has Stabil in it, when it is going to sit for any significant period of time.

If your trimmer is dying and replacing the fuel lines didn’t help, you may need to repair or replace the carburetor. Fortunately, complete replacement carbs are now available online for 15-20. I’ll document doing this on my trimmer in a coming article.

Tidying the edges of your yard maintains its appearance and can also prevent water damage and staining on fence boards, sheds, and garden-bed edging blocks. Get the job done with the gas-powered string trimmer that best suits your situation.

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Grass and weeds can grow up the side of the shed, encroach on the garden, and climb the fence, but with a gas string trimmer—commonly called a weed wacker—unwanted plants can quickly and efficiently be removed. This garden tool is a helpful addition to a large yard or any location with a lot of different obstacles, like trees, lawn ornaments, fencing, garden beds, and small structures. While battery-powered trimmers may be a good choice for light trimming in small yards, gas string trimmers have the power that’s ideal for cutting through dense grass, weeds, and brush.

The best gas string trimmer for your yard will depend on several important factors, including cutting width, shaft type, and engine size. Ahead, we discuss these and other important considerations that went into choosing the trimmers we tested for this article. Later on, we will share more details on the individual models and how each one performed for us. The following list includes some of the best gas string trimmer tools available.

• BEST OVERALL: Echo SRM-225i
• RUNNER-UP:Husqvarna 330LK Gas String Trimmer
• BEST BANG FOR THE BUCK:Ryobi 2-Cycle Straight Shaft String Trimmer
• BEST COMMERCIAL:STIHL FS 70 R Grass Trimmer
• BEST CURVED-SHAFT:Husqvarna 130C Curved Shaft String Trimmer
• BEST LIGHTWEIGHT:STIHL FS 40 C-E Gas String Trimmer
• HONORABLE MENTION:Craftsman 25cc 2-Cycle Straight Shaft Gas Trimmer
• ALSO CONSIDER:Echo GT-225 Curved Shaft String Trimmer

How We Tested the Best Gas String Trimmers

Shopping for a string trimmer reveals that statistics can only forward the search so far. Regardless of the engine size, machine weight, shaft length, and other measurables, much of the tool’s effectiveness depends on the operator’s physical build and personal preferences, along with the type of trimming to be done. To learn more about the trimmers on our list, we field-tested them in a variety of settings.

We spent 2 days testing the gas string trimmers in this article on regular lawn trimming, close-quarters trimming among shrubs and perennials in landscape beds, and mowing an overgrown field. After unboxing and assembling each trimmer, we filled the fuel tank and got started.

Our initial notes included measurable and easily observable features, such as each machine’s physical size and weight, whether it had a straight or curved shaft, and whether or not it could be used with other tool attachments. The first operational tests were simply to start each machine and note the number of pulls required to get started.

We then used each machine for 30 minutes of field mowing and 15 minutes each of lawn trimming and landscape bed trimming. In each setting, we noted perceived cutting power, responsiveness to triggering, responsiveness to bumping out new trimmer line, operator comfort, and whether or not refueling was necessary to complete the project. Finally, we reloaded each cutting head with trimmer line and noted the difficulty.

We recorded our field notes and used a scoring rubric to organize the trimmers with award titles for this guide.

Our Top Picks

The lineup of gas string trimmers was chosen based on the individual safety features, attachments, and engine type as well as product quality and the other important factors mentioned above. The following products were tested in situations DIYers are likely to encounter on their property and proved to be among the best gas string trimmers for keeping the yard and garden neatly trimmed.

Echo SRM-225i

Our top pick proves the adage, “You get what you pay for.” The Echo SRM-225i string trimmer costs a little more than some of the competitors we tested, but it delivered the best combination of easy start-up, overall working comfort, and grass trimming power at a reasonable price.

Powered by a lightweight, high-output 21.2cc two-cycle engine, this trimmer cuts with satisfyingly aggressive results in dense grass and coarse weeds, and uses less fuel than competitors with larger engines. It makes a 17-inch cutting swath and features a speed-feed head that reduces the time it takes to reload the trimmer line by half. The 59-inch straight shaft offers excellent reach beneath shrubs and into tight corners. The weight-balanced design, rubber overmold grip on the handles, and ergonomic throttle trigger reduce operator fatigue for extended use.

No assembly was required to get started with the Echo straight-shaft string trimmer. The position of the fuel tank made it easiest to fill with the motor elevated. Using a 1-gallon fuel can, we held the trimmer in one hand while pouring with the other. Following the start-up instructions printed on the machine, it started on the third pull of the recoil cord.

We were pleasantly surprised by the way the smaller-than-average motor powered this trimmer through coarse vegetation and even small, woody stems. Performance exceeded the 25cc trimmers we tested and rivaled the 27cc models. The weight of the motor was well balanced by the long, straight shaft, so maneuvering was very easy and comfortable, even after an hour of use. The rubber grips on the handles deadened any vibration so that we didn’t experience the hand fatigue or numbness that sometimes comes with hours of weed wacking. Though not the most powerful brush-cutting string trimmer we tested, this Echo model makes the best case for general trimming and frequent, larger cleanup projects.

• I-75 ignition system reduces start-up effort
• Speed-feed head makes adding trimmer line easy
• Spool can’t be wound in the wrong direction
• Anti-vibration design; cushioned front and rear grips
• Compatible with heavy-duty.095 trimmer line

Get the Echo SRM-225i gas string trimmer at Amazon, The Home Depot, or Mowers Direct.

Husqvarna 330LK Gas String Trimmer

The Husqvarna 330LK Gas String Trimmer offers heavy-duty capability for trimming, edging, and other yard-care tasks. It features an attachment-compatible shaft that comes with the high-capacity Rapid Replace trimmer attachment and is compatible with lawn-edger, hedge-shear, and pole-chainsaw attachments. Spring-assisted recoil starting, a powerful 27.9cc two-cycle engine, and customizable trimming swath make this multitasking trimmer one of the top performers in our tests.

While it offered similar benefits of reach and power as the other straight-shaft trimmers, the Husqvarna attachment-capable trimmer stood out in our tests in terms of controls and overall feel. The auto-return on-off switch defaulted to the “on” position, and the pull-out choke lever made it obvious which position was for cold starting versus running—two points of confusion on many trimmers.

The spring-assisted recoil starter took some getting used to. There was a catch point mid pull, before which we could feel resistance slightly intensifying, but afterwards the power-assist mechanism released. Overall starting was easy (never more than three pulls), and the motor ran relatively quietly (although we wore over-the-ear hearing protection for the tests).

Powered by the largest motor in our test group, the trimmer did a fantastic job cleanly snipping the tops of wayward grass blades and hogging through heavy overgrown weeds. The vibration-dampening system seemed to reduce hand fatigue, but after an hour of operation, the machine’s weight was more tiring overall than the other trimmers. Adding a harness system could help for bigger jobs. This model seemed like a really good fit for those who want to get the most production from a single machine, with plenty of power for a wide range of tasks.

• 27.9cc engine delivers more power for tough cutting conditions
• Spring-loaded Smart start and air purge for easier cold starting
• 20-inch-wide cutting swath reduces trimming time
• Compatible with Husqvarna power-head attachments

Get the Husqvarna 330LK gas string trimmer at Amazon, Lowe’s, or Rural King.

Ryobi 2-Cycle Straight Shaft String Trimmer

For those just starting to build their outdoor power-tool collection, a reliable and budget-friendly choice makes sense. The Ryobi straight-shaft string trimmer delivers plenty of power to knock down grass and weeds, and it’s attachment capable for punching out more yard chores beyond just trimming.

This trimmer features a 25cc two-cycle engine and includes the “reel-easy” Rapid-loading trimmer head. The shaft is compatible with Ryobi expand-it attachments, including the lawn edger, cultivator, pole chainsaw, leaf blower, and hedge shear, sold separately.

The Ryobi string trimmer was ready to go within 5 minutes. Out-of-the-box assembly required attaching the debris guard above the cutting head and inserting the attachment into the power-head shaft. When we added fuel, we noted that the tank’s opening was quite small, so we had to pour very carefully (or use a funnel) to avoid spills. Also, the opening is oriented horizontally, which could pose a leak problem with age but was not a problem for us.

I Bought Project Farm’s TOP RATED String Trimmer

For the low price, we were impressed with this trimmer’s performance. It tore through weeds and grass with a similar effect as the more expensive models. But this machine was significantly louder and vibrated more than the pricier competition. We also noted that the Ryobi was one of two machines in our tests that did not run a full hour on a single tank of fuel—we had to refuel at about 55 minutes. But for anyone on a budget, this weed wacker makes quick work of trimming jobs and may save money and storage space when other attachments are added.

• Ample power for trimming and edging; suitable for both thick and thin plant and grass varieties
• Works with hedge-shears, lawn-edger, or pole-chainsaw attachments
• Easy to maneuver into hard-to-reach areas

Get the Ryobi gas string trimmer at The Home Depot.

STIHL FS 70 R Grass Trimmer

Even at a premium price point, landscape pros and commercial property managers choose STIHL string trimmers and brush cutters for their combination of power, durability, and operator comfort. The STIHL FS 70 R commercial-grade straight-shaft string trimmer features a fuel-efficient 27.2cc two-cycle engine to go along with its rugged but lightweight polymer housing. To protect the environment and the health of workers, this trimmer earns the STIHL “Caring For Nature” rating as a low-emissions trimmer that operates cleaner than Environmental Protection Agency requirements.

Among the trimmers we tested, the STIHL models were more expensive and a little harder to get, but worth it. STIHL only sells through its network of authorized full-line servicing dealers, so online ordering is limited and home delivery is generally not available. But the process eliminates out-of-the-box start-up problems because a certified technician assembles, tests, and adjusts the machine at the dealership prior to customer pickup.

Our first note on this trimmer was that the fuel-fill opening is conveniently wide and extremely easy to access, even while the machine is resting flat on the ground. For our tests, the FS 70 R started on the first pull. It ran noticeably smoother than any of the other machines, both at idle speed and at full throttle, with delay-free acceleration when triggered. The trimmer cut cleanly through tall grass and densely overgrown weeds without getting wrapped up or bogged down in debris. As for fuel efficiency, even with the modest 11.5-ounce fuel tank, we were able to trim for a full hour without stopping to refill. The AutoCut trimmer head was fast and easy to respool without disassembly.

Another point for consideration was the overall operating comfort. Not only was the FS 70 R the lightest straight-shaft trimmer we tested, but it also came with a shoulder strap that transferred all of the machine’s weight away from the hands. As a total package, this would be our machine of choice for all-day trimming on large properties.

• Very lightweight design; easy to maneuver design
• Carry strap for extended-use comfort included
• Protected choke lever reduces risk of damage in transport
• Easy-access air filter for quick clean out or replacement
• High-power engine and excellent fuel economy increase work productivity

Get the STIHL FS 70 R gas string trimmer at Ace Hardware.

Husqvarna 130C Curved Shaft String Trimmer

This Husqvarna gas trimmer has a curved-shaft design that is intended to make it easier to cut parallel to the ground. The trimmer features a bump feeding system, enabling the user to extend the string from the dual-line head by tapping the trimmer head against the ground.

The two-cycle gas string trimmer is a good option for homes with small to medium yards, as it weighs just 11.8 pounds and has a 17-inch cutting width. It protects the user with a debris guard cleverly designed with a narrow extension from the shaft widening to a broad, protective shield; this combination makes it easier to see where the trimmer is cutting without sacrificing safety. The trimmer also has a trigger safety switch, which must be activated before the variable speed trigger will respond, helping prevent accidental start-ups.

The Husqvarna curved-shaft trimmer weighed less than most straight trimmers but a little more than the other curved shaft trimmers in our tests. It arrived ready to work, with no assembly required. After filling the fuel tank, it started on the third pull and delivered powerful and surprisingly quiet performance.

The molded fuel cap was easy to grip, and the tank mouth was wide enough to fill easily. We found it convenient to rest the engine on an elevated surface for refueling. The spring-assisted recoil starter made starting easy—typically on the second pull in our tests. The trimmer easily mowed down all of the coarse weeds and thick grass in its way. We loved the responsiveness of the bump cutting head, which seemed to feed more easily than most of the other trimmers we tested. For curved-shaft enthusiasts with small to midsize yards, this could be a great choice.

• Surprisingly quiet operation for such a powerful engine
• Plenty of power to whack coarse weeds and thick grass
• Curved shaft comfortable for users under 6 feet tall

Get the Husqvarna 130C gas string trimmer at Amazon, Lowe’s, or Northern ToolEquipment.

STIHL FS 40 C-E Gas String Trimmer

Curved-shaft trimmers are touted for the weight reduction that comes from a shortened shaft—but they often place more weight on the user’s rear hand, which can increase operator fatigue. Weighing less than 10 pounds, the STIHL FS 40 C-E Gas String Trimmer pairs the lightest design in our roundup with a shoulder strap that transfers the load to the operator’s core. The result is a major upgrade in extended-use comfort for curved-shaft trimmer users.

This machine also excels in trimming performance. The 27.2cc engine runs clean and smooth, delivering commercial-grade cutting power, excellent fuel economy, and low exhaust emissions. It has earned STIHL’s “Caring For Nature” seal for exhaust emissions that outperform EPA standards.

We were pleasantly surprised by the bargain price on the STIHL curved shaft trimmer—just a few dollars more than our Best Bang for the Buck pick. It was worth every penny. As with the other STIHL trimmer on our list, this model was assembled and tested at the dealership before we picked it up. Both machines are built with the same engine type.

The FS 40 C-E started on the first pull and tore through all of the grass and weeds in its way without hesitation. The engine ran and accelerated very smoothly throughout testing, with a crisp response to triggering. We cannot overstate the value that a shoulder strap adds to this curved-shaft design. The other curved trimmers we tested left us with heavy right arms from carrying the weight of the motor after an hour of trimming, but this STIHL did not. In fact, the shoulder strap increased overall maneuverability by providing a pivot at the attachment point. Arm and shoulder muscles were used only to guide the direction of the trimmer. This makes an excellent pick for any curved-shaft trimmer user, especially those faced with hours-long jobs.

• Budget-friendly price for industry-leading performance
• Very light weight, plus shoulder strap to further decrease load
• Easily cuts through dense grass and coarse weeds
• Very low exhaust emissions for a reduced environmental impact

Get the STIHL FS 40 C-E gas string trimmer at Ace Hardware.

Craftsman 25cc 2-Cycle Straight Shaft Gas Trimmer

At 13 pounds, this gas string trimmer is considered lightweight, but it weighs a bit more than most of the competition we tested. It features a dual-line head that cuts a 17-inch swath, making this trimmer a good choice for yards up to 1 acre or for any locations where landscaping and lawn ornaments demand precision trimming.

The trimmer comes with a debris guard and has a multiposition handle that can be adjusted to the user’s preferred position for better control and comfort. It also features a bump feeding system so the available line can be extended by simply tapping the head on the ground. This trimmer has a straight shaft, and the head can be removed to make string loading easier. It works with other Craftsman trimmer attachments, which are not included.

In our tests, the Craftsman trimmer performed similarly to the Ryobi. Both featured no-frills design and powerful cutting action, and both were priced near the low point among our test group. Installing the debris guard and loop handle took about 5 minutes. We added fuel and were ready to start. This was the only trimmer we flooded by overpriming while attempting to start the first time. After waiting a few minutes, it started on the fourth pull.

The 25cc motor provided ample power to cut through thick grass and weeds. The cutting head was easy to reload with a new trimmer line. The machine ran a bit louder than the other trimmers we tested, and we felt more vibration in the handles. Still, because of its modest price, and especially because of its ability to power other tool attachments, this Craftsman string trimmer has a lot to offer budget-conscious homeowners.

• Lowest price point of all trimmers we tested
• Ample power for grass trimming and weed wacking
• Attachment-capable shaft compatible with numerous yard-care tools
• Easy winding bump head for fast trimmer-line reloads

Get the Craftsman gas string trimmer at Lowe’s, or Amazon.

Echo GT-225 Curved Shaft String Trimmer

The Echo GT-225 string trimmer makes yard work easier thanks to its lightweight curved-shaft design and professional grade 21.2cc two-cycle engine. Weighing just over 10 pounds, this trimmer is easy to carry and highly maneuverable—an ideal build for smaller yards. The two-line Rapid-loader cutting head trims a 16-inch swath and uses precut trimmer line for easy line changes.

The GT-225 curved-shaft trimmer arrived ready to work and no assembly was required. After adding fuel, which worked best with the engine resting on an elevated surface, it was ready to go. We noted that this Echo trimmer is powered by the same engine type as our Best Overall pick. It started easily on the second pull, accelerated smoothly, and delivered cutting power seemingly beyond its 21.2cc engine displacement.

As with the Husqvarna curved-shaft trimmer, the shorter shaft left a greater proportion of the machine’s weight in the operator’s rear hand. But the lighter overall weight made it a bit less tiring. One aspect of this trimmer that really stood out was the unique cutting-head design. It uses fixed pieces of trimmer line instead of feeding from a reserve spool. It cuts well, but when the trimmer line wears down, the operator must stop and reload. This design is most practical for small yards where multiple reloads will not be required.

TOP 5 Best Cordless String Trimmer [ 2023 Buying Guide ]

• Smooth-running, surprisingly powerful 21.2cc 2-cycle engine
• Easy to maneuver in small landscapes
• Durable and fuel efficient
• Simple cutting-head design makes it easy to reload

Get the Echo GT-225 gas string trimmer at Amazon, The Home Depot, or Blain’s Farm Fleet.

What to Consider When Choosing the Best Gas String Trimmer

A string trimmer is a powerful tool equipped with weed-eater string to cut through overgrown grass and weeds quickly. For help deciding on the best gas string trimmer for your home’s landscaping, consider the following criteria: engine type, fuel efficiency and runtime, cutting width, feeding and loading, speed, ease of use, attachments, and safety features.

Engine Type

Gas string trimmers fall into two categories based on the type of engine they use: two-cycle or four-cycle. This seemingly simple difference creates significant gaps between efficiency, cost, maintenance, and power.

• Two-cycle engines are lightweight, allowing the user to move more freely while working with the trimmer. Two-cycle engines use a fuel-and-oil blend, which reduces average maintenance to changing the weed-eater string and emptying the fuel tank before storing the trimmer for the off-season. Though lower maintenance, these trimmers have less power output than those with a four-cycle engine.
• Four-cycle engines are generally considered more efficient than two-cycle engines. The efficiency comes at the cost of size and weight, so users should expect a heavier tool when they pick up a four-cycle engine trimmer. These tools also are more powerful than products with two-cycle engines, making them a good choice for yards that are more than an acre. However, products with four-cycle engines typically cost more and require regular oil changes to keep them working properly.

The size of the engine is another important factor. This is measured in cubic centimeters (cc). As an engine increases in size, as indicated by the cc, the power output of the engine increases. This is because a larger engine is generally capable of displacing more air and fuel at one time. When displacement is low, power output is also low. So if high power is the goal, look for a product with an engine larger than 40cc.

Fuel Efficiency and Runtime

Fuel efficiency can be difficult to gauge, as there are a number of different factors that can influence it, including fuel mixture, ambient temperature, operating speed, and even the type of grass or weeds being cut. However, a gas string trimmer with a four-cycle engine will usually be more efficient than a trimmer with a two-cycle engine.

Runtime is a bit easier to measure because manufacturers typically provide the fuel-tank size and the maximum runtime on a single tank of fuel. These runtime numbers are based on tests performed in ideal, controlled environments, so factors like high- and low-temperature extremes or very dense, wet foliage can reduce the actual runtime. These situations decrease the fuel efficiency of the trimmer, causing it to use more fuel in a shorter period of time.

Cutting Width

The cutting width of a gas string trimmer refers to the total width the rotating string can reach when the trimmer is in use. Standard gas string trimmers will have a cutting width of about 16 to 18 inches. However, there are compact models that may be as small as 12 inches wide and commercial gas string trimmers that exceed 20 inches wide, so it’s important to know what size is necessary for the lawn, yard, and garden.

Yards that exceed 1 acre and have very few small obstacles may benefit from a gas string trimmer with a cutting width of 18 inches or more, while yards that are smaller than 1 acre are fine with gas trimmers that have a smaller cutting width. Users with many obstacles in their yard may prefer a smaller cutting width so they can have more precise control. For cutting through deep, dense weeds and overgrown grass, it’s helpful if the cutting width is big and the engine is powerful.

Variable Speed Control

The speed of a gas string trimmer is controlled by a variable speed trigger that can either be placed on the shaft of the tool or on one of the handles (if the model has a split-handle design). Trigger placement on the right handle may cause problems for left-handed users. When the trigger is on the shaft of the trimmer, it’s relatively easy to use either hand to control the speed while the other hand controls the movement of the trimmer head.

Variable speed control allows the user to reduce the speed for light trimming or increase the speed to cut through dense brush and weeds more rapidly. The ability to dial down the speed for precision control is great while trimming around lawn ornaments, garden beds, and along fencing to reduce the potential damage that can be caused by less controllable trimmers.

Loading and Feeding

Loading and feeding the line tend to be the most challenging parts of using a gas string trimmer. Loading refers to installing the cutting string, which can be difficult, especially when dealing with a dual-line head that has two weed-eater strings. To help make this task easier, shoppers will want to consider products with a detachable head so they aren’t fighting with the entire trimmer while trying to change the line.

Feeding the line refers to pulling more line out of the trimmer head. There are now many products that offer innovative line-feeding methods that eliminate the need to start and stop while using the trimmer to deal with a standard fixed line. These include bump feeding and auto feeding.

• Fixed-line gas string trimmers are attached tightly to the head, meaning the user needs to loosen the head and manually pull the line out when more is needed.
• Bump feeders are designed to push out more string when the head is bumped on the ground or on another hard object so the user needn’t stop to extend the string.
• Auto feeders have a prewound head that automatically feeds string using centrifugal force, so the string is constantly self-correcting to the ideal length.

Ease of Use

Using a gas string trimmer can be tiring, but several factors can help make the work easier. These include the angle of the shaft, the weight of the string trimmer, the balance of the trimmer, and the trimmer head.

• The shaft of the trimmer can either be completely straight or curved. Curved shafts are great for getting a flat angle cut over a broad area without having to bend and twist to change the cut of the trimmer. Straight shafts are better for detailed trimming between and around lawn ornaments.
• The weight of a trimmer can tire the user, especially if working in a very large yard or dealing with many different precision cuts. Additional time spent trimming can lead to aching arms and shoulders, so a lighter trimmer of 10 to 12 pounds may be a better option. If the power of a heavier trimmer is needed, then work breaks may be necessary to avoid injury.
• The balance of the gas string trimmer is dependent on how the weight of the engine, focused at the rear of the tool, compares to the weight of the rest of the trimmer, which is dispersed along the entire length of the shaft down to the head. Unfortunately, balance is difficult to determine without actually holding the tool, so be sure to read product information and hands-on reviews, such as the ones that appear here, to get a good idea of how the trimmer handles.
• The trimmer head can come with a variety of attachments detailed below. It can also have a versatile tilting feature that allows the head to be angled up or down for more precise cutting in tight spots.

Attachments

When using a gas string trimmer to clean up the yard and garden, it’s possible to encounter sticks, leaves, and debris; the trimmer is useless to deal with these unless it comes with an edging tool, saw, blower, or brush attachment.

• Edging tools are useful for creating a defined edge between the garden and the lawn or the lawn and the sidewalk or driveway. They have a more powerful cutting blade that makes quick work of overgrown grass, which saves the time and effort of using a shovel to edge the lawn.
• Saw attachments are a great choice for cutting through sticks and brush that have fallen during the fall and winter seasons. While it shouldn’t be used for cutting through logs or planks of wood, the saw moves easily through small branches and twigs.
• Blowers are a separate tool, but sometimes they are packaged as a kit with a trimmer. They help quickly clean up a mess made by trimming, edging, and cutting.
• Brush attachments can help clean up a messy sidewalk or driveway, pushing the yard debris into a pile or just brushing stray grass and dirt back onto the lawn.

Safety Features

Before picking up a gas string trimmer, it’s important to remember that this device is designed for cutting through layers of the tough cellulose fiber of plants while hitting walls, rocks, metal, and wood at an impressive speed. It is a machine that should always be handled with proper precautions. With this in mind, look for gas string trimmers that have safety features like a debris guard, a trigger switch, and a padded grip.

• Debris guards are included with almost every gas string trimmer because they are essential to protecting the user. Even with a guard, some flying grass can escape, which is why users must wear safety glasses, long pants, and closed-toe shoes while working.
• Trigger switches are designed to prevent the trimmer from being accidentally turned on. The trigger switch must be held down before the trigger will activate the trimmer.
• Padded grips on the shaft and handle of the gas string trimmer will help reduce hand fatigue and muscle strain that can be caused by excessive vibration. The padding also makes the tool easier to hold and helps prevent it from slipping out of the user’s hand while trimming.

FAQs

If you’re still unsure about some of the details surrounding gas string trimmers, read the following answers to some of the most commonly asked questions about how to use these trimmers as well as how to store and maintain these machines for years of use.

Q. What size gas string trimmer do I need?

When trying to decide on the right size trimmer, consider the size of the yard, the number of obstacles in the yard, and the type of obstacles. Generally, larger yards without many obstacles will be easier with larger gas string trimmers. Yards with gardens, low-hanging plant leaves, lawn ornaments, and fences are better handled with a smaller trimmer.

Q. How do you store gas string trimmer?

To keep it safe from hot- and cold-temperature extremes, precipitation, and debris, store a gas string trimmer off of the floor inside a workshop or garage. This can be done by hanging the gas string trimmer on the wall using two or more hanging hooks. Make sure to empty the gas from the trimmer before storing for the off-season.

Q. How long do gas string trimmers last?

Gas string trimmers can last about 5 to 10 years, with some difference in longevity depending on how the trimmer is stored and if it is maintained properly.

Why Trust Bob Vila

Bob Vila has been America’s Handyman since 1979. As the host of beloved and groundbreaking TV series including “This Old House” and “Bob Vila’s Home Again,” he popularized and became synonymous with “do-it-yourself” home improvement.

Over the course of his decades-long career, Bob Vila has helped millions of people build, renovate, repair, and live better each day—a tradition that continues today with expert yet accessible home advice. The Bob Vila team distills need-to-know information into project tutorials, maintenance guides, tool 101s, and more. These home and garden experts then thoroughly research, vet, and recommend products that support homeowners, renters, DIYers, and professionals in their to-do lists.