The best trimmer mower overall in this roundup is the PROYAMA 170cc Walk-Behind String Trimmer Mower, a gas-powered option that balances a broad cutting path with the power suited to heavy growth. The Earthquake 60V stands out for buyers who want battery power, while the BILT HARD self-propelled model is the one to compare if pushing a mower across rough ground is a concern. The main tradeoff is between gas runtime and battery convenience, with propulsion and cutting width also shaping how tiring a job feels. Not every 22-inch model will suit the same terrain or workload, so match the machine to your vegetation and yard layout. Read on for the full breakdown and help choosing among all eight.
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Key Takeaways
- Seven of the eight picks are gas-powered. The Earthquake 60V is the only battery model, making it the clear option for shoppers prioritizing cordless operation over refueling.
- Most models share a 22-inch cutting width. That makes engine type, propulsion, and handling more useful ways to separate options than width alone.
- The BILT HARD is the only explicitly self-propelled pick. Its drive system may matter more than engine size for buyers tackling slopes or longer stretches of rough ground.
- Gas engine ratings cluster around 160cc and 170cc. The listed displacement is a useful comparison point, but it does not by itself reveal how easily a mower handles a specific mix of weeds and terrain.
- The Earthquake 160cc listings overlap closely. Compare the exact model number and package details before choosing between them; the 40314 listing specifies its model number and 22-inch width.
| trimmer mower | Cutting width | Cutting height | Model | Engine |
|---|---|---|---|---|
| PROYAMA 170cc Walk-Behind Stri | 22 inches | — | PWT-22 | 170cc, 4-cycle OHV |
| Earthquake 60V Walk-Behind Str | 22 inches | 1.5–4 inches | 44965 | — |
| Earthquake Walk-Behind String | 22 inches | 1.5–3 inches | 40314 | 160cc four-cycle Viper |
| YARDMAX YL2250 22-Inch 170cc G | 22 inches | 1.5–3.5 inches | YL2250 | — |
| Earthquake Walk-Behind String | 22 inches | 1–4 inches, tool-free adjustment | 47325 | 160cc 4-cycle Viper |
| BILT HARD Self-Propelled Walk- | 22 inches | 1.6–3.7 inches | — | 170cc OHV 4-cycle gas |
| AMERISUN 22-Inch 170cc Walk-Be | 22 inches | 1.9–4.0 inches | AM6222 | 170cc 4-stroke OHV |
| PowerSmart 22-Inch 170cc Walk- | 22 inches | 1.9–3.9 inches | — | 170cc four-cycle OHV gas |
More Details on Our Top Picks
PROYAMA 170cc Walk-Behind String Trimmer Mower
The PROYAMA makes the most sense when your trimming route includes rough ground and a lot of overgrowth. Its 14-inch flat-free wheels are larger than the wheels listed for the Earthquake 40314, helping it roll across uneven areas without worrying about inflation. The 170cc four-cycle engine and 22-inch cutting path give it a broad swath for clearing tall grass and brush, while straight-fuel operation avoids mixing oil into the gasoline. Compared with the cordless Earthquake 60V, though, this is a gas-powered choice: you’ll need to handle fuel, maintenance, and engine noise. Its wide overall dimensions can also make close maneuvering and storage harder. The folding handle helps reduce storage demands, but this pick prioritizes coverage and terrain capability over compactness.
Pros:- 22-inch cutting path covers a broad strip with each pass
- 14-inch flat-free rear wheels suit uneven terrain without inflation
- 170cc four-cycle engine runs on straight fuel
- Folding handle and included side bag support storage and cleanup
Cons:- Gas engine requires fuel handling and routine maintenance
- Noisier and heavier to maneuver than a handheld trimmer
- Wide listed dimensions can complicate storage and tight turns
Best for: Property owners clearing tall grass and weeds across uneven ground who want large wheels and a gas engine.
Not ideal for: Buyers who want quiet, low-maintenance cordless operation or need a narrow mower for tight spaces.
- Model:PWT-22
- Engine:170cc, 4-cycle OHV
- Engine power:3.5 kW / 5 HP
- Cutting width:22 inches
- Line diameter:0.155 inches (also listed as 0.16 inches)
- Rear wheels:14-inch flat-free
- Power source:Gas
- Included accessories:Side bag, 450 ml engine oil, and nylon trimmer line
Our verdict“Choose the PROYAMA when large wheels and a wide cutting path matter more than quiet operation or compact handling.”
Earthquake 60V Walk-Behind String Mower with Two 4Ah Batteries
This Earthquake is the standout for buyers who want a walk-behind trimmer without the fuel, pull-starting, and engine upkeep of the gas models. Its 60V brushless motor and two included 4Ah batteries offer a listed maximum runtime of up to 90 minutes, though runtime is stated as up to 45 minutes per charge and will vary with use. That makes it a more convenient fit for routine trimming than the gas-powered YARDMAX YL2250, while the three-speed dial and 1.5-to-4-inch height range give you more adjustment than the Earthquake 40314. The offset head helps reach along fences and buildings. The tradeoff is battery dependence: long or demanding jobs may require charging breaks, and replacement cutting line is still part of upkeep. Its 40-pound weight is comparatively manageable for a walk-behind model.
Pros:- Two 4Ah batteries provide listed runtime of up to 90 minutes total
- Three cutting speeds let users adapt power to the job
- Cutting height adjusts from 1.5 to 4 inches
- Brushless motor, airless wheels, and folding handlebars reduce routine hassles
Cons:- Actual runtime varies, with up to 45 minutes listed per charge
- Battery charging can interrupt longer jobs
- Replacement cutting line is still required
Best for: Homeowners with moderate trimming areas who want cordless convenience, adjustable cutting, and included spare battery capacity.
Not ideal for: People clearing large, dense areas without time to recharge, or buyers who prefer a gas mower’s continuous refueling workflow.
- Model:44965
- Power:60V battery
- Batteries:Two 4Ah
- Maximum runtime:Up to 90 minutes
- Cutting width:22 inches
- Cutting height:1.5–4 inches
- Cutting speeds:Three
- Weight:40 pounds
- Warranty:5-year limited tool; 3-year limited battery
Our verdict“Pick this model for cordless walk-behind trimming and useful cutting adjustments, provided its battery runtime fits your workload.”
Earthquake Walk-Behind String Mower with 160cc Viper Engine, 22-Inch Cutting Width, Model 40314
The Earthquake 40314 is a no-frills gas option for buyers who want a broad cutting path and practical controls without extra operating modes. Its 160cc four-cycle Viper engine powers a 22-inch cutting width, and the adjustable 1.5-to-3-inch height range covers common rough-grass jobs. The engagement bail is a useful distinction from a basic always-spinning setup: releasing it stops the cutting head without requiring an engine restart. Compared with the newer Earthquake model 47325, this version has a narrower stated height range and no listed tool-free adjustment; the 47325 also has a head designed to reduce weed wrap. The 40314 still offers airless wheels, an adjustable handlebar, and a foldable design. Its main compromises are pull starting and the need to load line.
Pros:- 22-inch cutting width covers substantial ground per pass
- Engagement bail stops the cutting head without restarting the engine
- Airless wheels avoid tire inflation
- Adjustable handlebar and foldable design help with fit and storage
Cons:- Gas engine requires pull starting and ongoing maintenance
- Cutting line must be loaded
- Height range stops at 3 inches, narrower than the Earthquake 47325
Best for: Buyers who want a simple gas-powered mower for rough grass and appreciate a cutting-head stop control.
Not ideal for: Those who want cordless operation, tool-free height adjustment, or a wider cutting-height range.
- Model:40314
- Engine:160cc four-cycle Viper
- Cutting width:22 inches
- Cutting height:1.5–3 inches
- Cutting line:0.155 inches
- Wheels:2.5 × 14.5-inch airless
- Handle:Adjustable and foldable
- Warranty:5-year limited
Our verdict“Choose the 40314 for straightforward gas-powered trimming with an engagement bail, but skip it if you need broader height adjustment.”
YARDMAX YL2250 22-Inch 170cc Gas Walk-Behind String Trimmer Mower
The YARDMAX earns its place for buyers whose rough-growth problem runs along fences, beds, and other edges. Its offset cutting head is designed to reach those boundaries more directly than the centered layout implied by the Earthquake 40314, reducing the need to angle the whole machine toward every edge. Five tool-free height settings from 1.5 to 3.5 inches also give it more adjustment steps than that Earthquake’s stated 1.5-to-3-inch range. The onboard cord caddy keeps spare string close, a practical touch when a job calls for line changes. The cost of this edge-focused setup is a manual, gas-powered machine: you still have to push it, manage fuel, and maintain the engine. At 61.7 pounds, it also takes more effort to handle than the 40-pound cordless Earthquake 60V.
Pros:- Offset head is suited to trimming along fences and landscaping
- Five tool-free height settings span 1.5 to 3.5 inches
- 14-inch wheels are designed for varied terrain
- Onboard cord caddy stores extra trimmer string
Cons:- Manual operation requires the user to push the mower
- Gas engine needs fuel and routine maintenance
- At 61.7 pounds, it is heavier than the Earthquake 60V model
Best for: Homeowners who regularly trim weeds along fences and landscaping and want several tool-free height settings.
Not ideal for: Buyers seeking self-propelled assistance, cordless use, or a lighter walk-behind machine.
- Model:YL2250
- Power source:Gasoline
- Cutting width:22 inches
- Cutting height:1.5–3.5 inches
- Height settings:Five, tool-free
- Wheel size:14 inches
- Weight:61.7 pounds
- Included feature:Onboard cord caddy
- Warranty:2-year limited manufacturer warranty
Our verdict“Choose the YL2250 if fence-line reach and quick height changes matter more than powered assistance or cordless convenience.”
Earthquake Walk-Behind String Mower, 160cc 4-Cycle Viper Engine, 22-Inch Cutting Width
For yards where vines and long weeds tend to wind around the cutting head, the Earthquake 47325 has a specific advantage: its head is designed to reduce weed wrap. That focus separates it from the Earthquake 40314, which offers a similar 160cc engine and 22-inch path but does not list the same weed-wrap design. The 47325 also provides tool-free height adjustment from 1 to 4 inches, a wider range than the 40314’s 1.5-to-3-inch setting range. Its engagement bail can stop the cutting head without restarting the engine, and the fold-down handle helps with storage. Against the cordless Earthquake 60V, however, this gas model avoids battery-runtime limits but brings fuel, noise, and engine upkeep. Its walk-behind size may also feel cumbersome in small, crowded yards.
Pros:- Cutting head is designed to reduce weed wrap
- Tool-free height adjustment spans 1 to 4 inches
- Engagement bail stops the cutting head without restarting the engine
- Airless wheels and fold-down handle support everyday use and storage
Cons:- Gas engine requires fuel and ongoing maintenance
- Large walk-behind format is less convenient in small spaces
- Cutting line still needs replacement
Best for: Owners of overgrown properties where long weeds and vines can wrap around a trimmer head.
Not ideal for: People with compact yards, tight landscaping, or a preference for low-noise cordless equipment.
- Model:47325
- Engine:160cc 4-cycle Viper
- Cutting width:22 inches
- Cutting height:1–4 inches, tool-free adjustment
- Cutting line:0.095-inch or 0.155-inch
- Wheels:2.5 × 14.5-inch airless
- Deck:One-piece steel
- Warranty:5-year limited
Our verdict“Pick the Earthquake 47325 for wrap-prone overgrowth and a broad height range, not for quiet or compact yard work.”
BILT HARD Self-Propelled Walk-Behind String Trimmer, 170cc, 22-Inch Cutting Width
The BILT HARD is the standout here for buyers who want help pushing through rough patches: its self-propelled drive moves at 1.9 mph, reducing the effort of guiding it across slopes or uneven ground. Its 22-inch cutting path and eight height settings suit overgrown grass and weeds, while the steel deck is built for regular outdoor work. Compared with the push-style AMERISUN 22-Inch 170cc Walk-Behind String Trimmer, the BILT HARD offers powered assistance, but its 10-inch wheels are smaller than the AMERISUN’s 14-inch wheels, which may matter on especially rough terrain. The tradeoff is gas-engine upkeep and manual recoil starting; the foldable handle helps with storage, but does not make this a lightweight choice.
Pros:- Self-propelled drive reduces pushing effort on slopes and uneven ground.
- 22-inch cutting width and eight height positions suit varied overgrowth.
- Steel deck and flat-free wheels are practical for regular yard work.
- Foldable handle makes storage more manageable.
Cons:- Recoil starter requires pulling a cord to start the engine.
- Gas operation requires fuel and routine engine maintenance.
- 10-inch wheels are smaller than the 14-inch wheels on the AMERISUN and PowerSmart models.
Best for: Property owners with sloped or uneven areas who want self-propelled assistance while cutting tall grass and weeds.
Not ideal for: Buyers who want push-button starting, low-maintenance electric operation, or larger wheels for especially rough ground.
- Engine:170cc OHV 4-cycle gas
- Cutting width:22 inches
- Cutting height:1.6–3.7 inches
- Height positions:8
- Self-propelled speed:1.9 mph
- Wheel size:10 inches
- Deck material:Steel
- Dimensions:52.7 × 18.6 × 42.1 inches
Our verdict“Choose the BILT HARD if self-propelled help matters more than larger wheels or electric-style convenience.”
AMERISUN 22-Inch 170cc Walk-Behind String Trimmer
The AMERISUN suits buyers who value wheel clearance and trimming control over powered assistance. Its 14-inch wheels are larger than the BILT HARD’s 10-inch wheels, making this a more appealing push model for bumpy ground, while the offset trimmer head helps reach grass along edges and obstacles. The 22-inch cutting width matches the other gas models here, so the main distinction is how it moves and where its head can work—not a wider swath. Compared with the PowerSmart DB6222, it shares the large-wheel format but weighs 62 pounds, six pounds more. The folding handle helps with storage, yet this remains a manual-push gas machine: it requires fuel and engine care, and its weight can make loading or repositioning awkward.
Pros:- 14-inch wheels are suited to uneven terrain.
- Offset trimmer head helps reach edges and obstacles.
- 22-inch cutting width handles broad areas of grass and weeds.
- Foldable handle supports more compact storage.
Cons:- At 62 pounds, it is heavier than the PowerSmart DB6222.
- Push operation requires the user to supply all forward movement.
- Gas engine needs fuel and routine maintenance.
Best for: Owners of uneven yards who want large wheels and an offset head for trimming around borders and obstacles.
Not ideal for: Buyers who need self-propelled assistance, a lighter machine for frequent transport, or a low-maintenance electric trimmer mower.
- Engine:170cc 4-stroke OHV
- Power source:Gas
- Cutting width:22 inches
- Wheel diameter:14 inches
- Cutting height:1.9–4.0 inches
- Weight:62 pounds
- Handle:Foldable
- Model:AM6222
Our verdict“Pick the AMERISUN if large wheels and an offset head matter more to you than self-propelled drive or easy transport.”
PowerSmart 22-Inch 170cc Walk-Behind Gas String Trimmer
The PowerSmart makes the most sense for buyers who want a straightforward gas trimmer mower with a little less starting friction. Its easy-start ignition and auto choke set it apart from the BILT HARD, which uses manual recoil starting, and its 56-pound weight is lighter than the AMERISUN’s 62 pounds. Both the PowerSmart and AMERISUN use 14-inch wheels, a useful match for yards with uneven patches. The 22-inch swath handles broad trimming, and the included line and basic tools give owners supplies for initial setup. This is still a push-style gas machine, not a self-propelled alternative to the BILT HARD, and its 170cc engine brings the usual fuel and maintenance needs. Its adjustable cutting range also tops out just below the AMERISUN’s.
Pros:- Easy-start ignition and auto choke simplify engine starting.
- 14-inch wheels suit uneven ground.
- At 56 pounds, it weighs less than the AMERISUN model.
- Includes trimming line, basic tools, and a two-year limited warranty.
Cons:- Gas operation requires fuel and routine engine maintenance.
- Push operation lacks the BILT HARD’s self-propelled assistance.
- Cutting-height range tops out at 3.9 inches, slightly below the AMERISUN’s 4.0 inches.
Best for: Homeowners who want a gas-powered 22-inch trimmer mower with easier starting, large wheels, and included setup supplies.
Not ideal for: Buyers who want self-propelled movement, battery-powered convenience, or the highest cutting-height setting available among these three models.
- Engine:170cc four-cycle OHV gas
- Cutting width:22 inches
- Line diameter:0.155 inches
- Cutting height:1.9–3.9 inches
- Wheel size:14 inches
- Weight:56 pounds
- Material:16-gauge steel
- Warranty:2-year limited warranty
- Included accessories:Funnel, two wrenches, spark plug wrench, and 10 trimming lines
Our verdict“Choose the PowerSmart if easier starting and a lighter 14-inch-wheel gas model matter more than self-propelled drive.”
How We Picked
I ranked these trimmer mowers by how clearly each option fits a distinct buyer need, then compared their stated power source, engine displacement, cutting width, and propulsion. The lineup favors machines with enough power and a practical cutting path for demanding trimming work, while giving credit to battery operation and self-propulsion where those features address different sources of hassle. I treated a 22-inch width as a common baseline, not a reason on its own to place one model above another.
The order reflects the information available in the product names and descriptions, so I avoid assuming unlisted runtime, cutting-height range, line-feed design, weight, or warranty terms. Gas-powered models rank higher for buyers prioritizing sustained work without battery charging; the battery Earthquake earns a distinct place for cordless convenience. The self-propelled BILT HARD is separated for terrain and effort, while close specification matches are ranked lower because the available details give buyers fewer clear reasons to choose one over another. I would verify exact configuration and included accessories before purchase.
Factors to Consider When Choosing Best Trimmer Mowers
Before choosing a trimmer mower, match the machine to the work pattern rather than focusing on engine size alone. Terrain, vegetation, and job length affect comfort and productivity, while maintenance and storage shape the ownership experience. These broader checks can help prevent buying more machine than you need—or a mower that struggles with your property.
Match the power source to your work sessions
Gas models suit long jobs where stopping to recharge would interrupt the work, but they require fuel handling and ongoing engine care. Battery power can reduce those routines and avoid an extension cord, though the usable work window depends on battery capacity, vegetation, and conditions. Do not assume that a battery mower will finish a large, heavily overgrown lot on one charge just because batteries are included. Think about whether you can split the work into sessions and whether a spare battery is available for the model. For this lineup, the Earthquake 60V is the only battery choice, so shoppers seeking cordless operation have fewer alternatives to compare. If your yard needs frequent, extended clearing, compare expected runtime and charging time against the convenience of avoiding gas maintenance.
Judge cutting width against access and maneuverability
A wider cutting path can reduce the number of passes over open ground, but it does not automatically make a mower faster on a property full of tight corners. Measure narrow gates, paths, and storage openings before focusing on the advertised width. Check whether the cutting head or guards add to the machine’s overall width, since the cutting measurement may not describe the space needed to pass through an opening. A broad path is useful for clearing long edges, while a compact route with obstacles rewards a machine that is easy to turn and position. Most picks here list a 22-inch cut, so dimensions and handling deserve extra attention when choosing among them. Avoid paying for a wide cutting path if access is the limiting factor on your property.
Account for slopes, ground condition, and operator effort
Rough ground can make pushing a walk-behind machine tiring even when its engine has ample power. On sloped or uneven land, look for the drive arrangement, wheel design, and control layout rather than relying on engine displacement as a proxy for ease of use. Self-propulsion can reduce pushing effort, but it may add mechanical complexity and does not remove the need to steer safely around obstacles. Check the manufacturer’s guidance for slope use and avoid operating on ground where traction or control is uncertain. In this group, BILT HARD is explicitly self-propelled, which gives it a distinct role for buyers concerned about push effort. For mostly flat, short trimming jobs, a simpler push model may be easier to manage and maintain.
Identify the vegetation you need to cut
String trimmer mowers are intended for growth that can be cut with line, but thick woody stems, saplings, and brush may call for a different tool. Grass height, density, and moisture can all change how quickly a mower clears an area and how often the cutting line needs attention. A larger engine rating does not guarantee a clean result if the line setup is unsuitable for the material. Check the machine’s approved line size and replacement process, then compare those details with the vegetation on your property. Wet, tangled growth may call for slower passes and more frequent maintenance than light edge work. Choosing for your toughest regular task is sensible, but buying for rare extreme brush can leave you with a heavier, less convenient machine for everyday trimming.
Compare maintenance, storage, and service access
Ownership effort continues after the first cut, so review how each model handles line replacement, cleaning, and routine service. Gas engines typically call for fuel and oil care, and storage procedures matter during long periods without use. Battery models avoid those engine tasks, but battery care and replacement availability still affect long-term convenience. Look up the manual before buying to confirm service intervals, recommended fuel or charging practices, and how easily consumables can be sourced. Also measure storage space and consider how you will move the mower when it is not running. A machine that fits your shed and maintenance habits can be a better long-term choice than one selected on power alone.
Compare the complete configuration, not just the name
Listings with similar names can refer to different packages, revisions, or included accessories, so confirm the exact model number before ordering. Check whether batteries and chargers are included, how much line comes with the mower, and whether any assembly is required. Warranty coverage and access to replacement parts can matter more than a small difference in listed engine displacement. The two Earthquake 160cc entries in this roundup are especially close on the details provided; the 40314 listing explicitly identifies a model number and 22-inch cutting width, but that does not settle every package difference. Read the specification sheet and manual for the exact listing you plan to buy. This check helps avoid choosing based on a feature that belongs to a different configuration.
Frequently Asked Questions
Should I choose the Earthquake 60V battery model or one of the gas trimmer mowers?
Choose the Earthquake 60V if cordless operation and avoiding gas-engine upkeep matter more than working continuously through a long session. A gas model is a stronger fit when the job is extensive and you prefer to refuel rather than pause for charging. Battery runtime varies with growth thickness and mowing conditions, so look for independent runtime details that reflect work like yours rather than relying only on the battery’s listed capacity. Confirm exactly how many batteries and which charger the listing includes. This roundup has only one battery option, so make the power-source decision before comparing the gas models against one another.
Is a 170cc trimmer mower always better than a 160cc model?
No. Engine displacement is one specification, not a complete measure of cutting performance, handling, or reliability. A 170cc rating may appeal for demanding work, but line type, engine design, maintenance, and the vegetation being cut also affect results. The 160cc Earthquake models share a 22-inch width in the listed details, while several 170cc choices use the same nominal width, so displacement alone does not separate the whole field. Check the manufacturer’s intended use and cutting-line requirements before choosing. For a smaller or lighter-duty area, control and serviceability may matter more than the difference in displacement.
Does self-propulsion matter if I only trim around the edge of a property?
It depends on how long the perimeter is and what the ground is like. A short, mostly flat edge may not justify the added drive system, especially if you value a simpler machine. Long runs, slopes, or rough surfaces can make self-propulsion more useful by reducing the force needed to move the mower. The BILT HARD is the lineup’s explicitly self-propelled model, so compare its controls and drive details with the push models before deciding. Even with powered movement, you still need enough control to steer around trees, fences, and other obstacles. Follow the maker’s slope and operating guidance.
Can a trimmer mower replace a lawn mower or a brush cutter?
A trimmer mower can take over some rough-grass and edge-clearing jobs, but it is not automatically a substitute for a conventional lawn mower or a brush cutter. A lawn mower is usually better suited to maintaining a neat, even lawn, while a trimmer mower is designed for taller growth that is awkward to reach with a deck. Heavy woody brush may exceed what string line is meant to cut, so a brush cutter or another tool may be a safer match. Compare the manufacturer’s limits for vegetation and approved line before using the machine on dense growth. If the property includes both fine lawn and rough areas, keeping separate tools may produce better results and reduce wear.
How should I choose between the two Earthquake 160cc models?
Start with the exact model number and package details on the listing rather than treating the names as interchangeable. One entry identifies the 40314 model and specifies a 22-inch cutting width; the other describes a 160cc four-cycle Viper engine and the same nominal width. The details provided here do not establish differences in included accessories, revisions, or warranty, so verify those points in the product documentation. Compare availability of replacement parts and the manual for the exact version you plan to buy. If the specifications and package prove identical, choose based on the clearest listing and support information rather than assuming one has an unlisted performance advantage.
Conclusion
For most buyers seeking a capable gas-powered option, I’d start with the PROYAMA 170cc as the best overall pick in this lineup. The Earthquake 60V is my choice for cordless convenience, while the BILT HARD self-propelled model makes more sense when reducing push effort is a priority. For best value, compare the YARDMAX, AMERISUN, and PowerSmart against the same practical checklist—exact configuration, service support, and included equipment—because their listed 170cc engines and 22-inch widths do not by themselves establish a winner. Beginners should favor the machine with the clearest manual, service information, and straightforward maintenance rather than choosing solely by engine size. Buyers with a specific need should start with the power source or propulsion they require, then verify fit, line specifications, and package details before settling on a model.
