22 in 173 cc Gas Walk Behind String Trimmer Mower: The Ultimate Lawn Care Solution

What Is a 22 in 173 cc Gas Walk Behind String Trimmer Mower?

A 22 in 173 cc gas walk behind string trimmer mower is a specialized piece of outdoor power equipment designed to cut through vegetation that standard lawn mowers cannot handle. The "22 in" refers to the cutting swath width — the diameter of the area cleared with each pass — while "173 cc" denotes the displacement of the gasoline engine, which provides substantial torque and power for demanding tasks.

Unlike traditional push mowers that rely on metal blades, this machine uses heavy-duty nylon string spinning at high speed to slice through grass, weeds, and light brush. The walk-behind design means the operator walks behind the unit, guiding it by handlebars, which offers excellent control and stability on uneven ground. If you are comparing options for challenging terrain, you may also want to explore the 33-inch walk behind mower for sale near me for larger properties, or the 14 in 4 blade manual walk behind reel lawn mower for a more traditional reel-cutting approach.

This type of trimmer mower is particularly valued by homeowners with large lots, rural properties, or areas that have been left unmaintained for extended periods. It bridges the gap between a standard string trimmer (which requires significant physical effort) and a brush mower (which may be overkill for many residential tasks). For those who also maintain a pristine lawn, pairing this tool with a reliable best self-propelled gas lawn mower with electric start creates a complete lawn care arsenal.

Why Choose a 22 in 173 cc Gas Walk Behind String Trimmer Mower?

Homeowners and property managers choose this class of trimmer mower for several compelling reasons. Understanding these benefits will help you determine whether this machine aligns with your lawn care needs.

Superior Cutting Power for Tough Vegetation

The 173 cc engine delivers enough horsepower to maintain high string speed even when encountering dense growth. This means you can clear tall grass, weeds, and light brush without the engine bogging down — a common frustration with smaller, less powerful units. For those dealing with particularly stubborn weeds, combining this trimmer mower with a targeted 2 4-D weed killer application can help keep regrowth under control.

Wheeled Design for Comfort and Control

Carrying a handheld string trimmer for hours is exhausting. The walk-behind design transfers the weight to wheels, allowing you to cover more ground with less fatigue. The wheels also provide stability on slopes and uneven terrain where a handheld trimmer would be difficult to control. If your property features hills, you may also benefit from reviewing options like the best self-propelled lawn mower for hilly terrain to complement your equipment lineup.

Versatility Across Seasons and Tasks

From spring cleanup to fall brush clearing, a gas trimmer mower adapts to various seasonal challenges. It can handle:

• Overgrown lawns that have not been mowed recently
• Fence lines and property borders
• Ditches and drainage areas
• Around trees, shrubs, and garden beds
• Slopes and embankments

No Power Cords or Battery Limitations

Gas-powered equipment offers unlimited runtime as long as you have fuel. There are no cords to trip over and no batteries to recharge. This makes the 22 in 173 cc trimmer mower ideal for remote areas of your property where access to electricity is limited. If you are also considering battery-powered alternatives for lighter tasks, the 80V brushless cordless 21 in self-propelled lawn mower is worth exploring for comparison.

Key Features That Matter When Choosing a Model

Not all 22 in 173 cc gas walk behind string trimmer mowers are created equal. When evaluating models, pay close attention to the following features:

Comparing Entry-Level, Mid-Range, and Premium Models

When shopping for a 22 in 173 cc gas walk behind string trimmer mower, you will encounter models across different quality tiers. Here is how they generally compare:

For most homeowners with moderate to large properties, a mid-range model offers the best balance of performance, durability, and value. If you also maintain a traditional lawn, pairing this trimmer mower with the best rated walk behind self-propelled lawn mowers ensures you have the right tool for every task.

How It Works and What It Handles

Understanding the mechanics of a 22 in 173 cc gas walk behind string trimmer mower helps you use it effectively and safely.

The Cutting Mechanism

The engine drives a spinning head beneath the deck. Heavy-duty nylon string extends from this head and rotates at high speed. As the machine moves forward, the string impacts vegetation, cutting it cleanly. The centrifugal force keeps the string extended during operation. When the string wears down or breaks, it must be replaced or advanced (depending on the head type).

What This Machine Can Handle

• Tall grass: Easily cuts through grass that has grown knee-high or higher
• Weeds: Handles most common lawn and field weeds, including thick-stemmed varieties
• Light brush: Can clear saplings and thin woody growth (though heavy brush may require a dedicated brush mower)
• Rough terrain: The wheeled design and powerful engine allow operation on uneven ground

What It Cannot Handle

While powerful, this trimmer mower has limitations. It is not designed for:

• Thick, mature brush or trees
• Rocky terrain that could damage the string head
• Very steep slopes where operator safety is compromised
• Wet, muddy conditions that cause loss of traction

If your property includes areas where a traditional mower is more appropriate, consider complementing your trimmer mower with the 13 in 11 amp corded electric walk behind push mower for lighter, more precise work around the home.

Who Should Buy a 22 in 173 cc Gas Walk Behind String Trimmer Mower?

This machine is not for everyone. Understanding whether you fit the ideal user profile will help you make an informed decision.

Ideal Users

• Rural property owners: If you have acreage with areas that are not regularly maintained, this trimmer mower saves hours of manual labor.
• Homeowners with large lots: Properties with extensive fence lines, ditches, or perimeter areas benefit greatly from the efficiency of this machine.
• People clearing neglected land: If you have recently purchased a property that has been left overgrown, a 173 cc trimmer mower can reclaim usable space quickly.
• Landscape maintenance professionals: For commercial use, premium models offer the durability and performance needed for daily operation.

Users Who May Prefer Alternatives

• Small urban yards: If your entire property is a quarter-acre or less, a handheld string trimmer or a standard mower may be sufficient.
• Those uncomfortable with gas engines: Gas-powered equipment requires fuel mixing (for 2-cycle engines), oil changes (for 4-cycle), and regular maintenance. Electric alternatives may be preferable for some users.
• People with limited storage space: Walk-behind trimmer mowers take up more room than handheld units.

If you are also in the market for a riding mower for larger open areas, you might explore the best riding lawn mower for 1-2 acre lot to build a complete equipment strategy for your property.

Maintenance Tips for Longevity and Performance

Proper maintenance extends the life of your investment and ensures consistent performance. Follow these guidelines to keep your 22 in 173 cc gas walk behind string trimmer mower in top condition.

Engine Maintenance

• Oil changes: For 4-cycle engines, change the oil according to the manufacturer's schedule — typically after the first few hours of use and then seasonally.
• Air filter: Clean or replace the air filter regularly, especially if operating in dusty conditions.
• Spark plug: Inspect and replace the spark plug annually or as needed for reliable starting.
• Fuel system: Use fresh fuel and consider adding a fuel stabilizer if the machine will sit unused for extended periods. Drain fuel before long-term storage.

String Head Maintenance

• Check string before each use: Inspect for fraying, wear, or breakage. Replace worn string promptly to maintain cutting efficiency.
• Keep the head clean: Remove grass clippings and debris that can accumulate and cause imbalance.
• Replace worn parts: If the string head becomes damaged or fails to advance string properly, replace it according to the manual.

General Care

• Clean after each use: Remove debris from the deck, wheels, and engine area.
• Check fasteners: Periodically tighten bolts, screws, and connections to prevent vibration-related issues.
• Store properly: Keep the machine in a dry, covered area to prevent rust and weather damage.
• Sharpen or replace worn components: While the string does the cutting, other components like the shield and guard should be inspected and replaced if damaged.

Safety Guidelines for Operating a Gas Trimmer Mower

String trimmer mowers are powerful machines that demand respect. Follow these safety practices to protect yourself and those around you.

Personal Protective Equipment (PPE)

• Safety glasses or goggles: Protect your eyes from flying debris — this is non-negotiable.
• Hearing protection: Gas engines are loud; prolonged exposure can damage hearing.
• Sturdy footwear: Wear closed-toe boots with good traction. Never operate in sandals or barefoot.
• Long pants and sleeves: Protect your skin from flying debris and string fragments.
• Gloves: Provide grip and protect hands when working on the machine.

Operational Safety

• Clear the work area: Remove rocks, wire, toys, and other debris before trimming. Flying objects can cause serious injury or damage property.
• Keep bystanders away: Maintain a safe distance — at least 50 feet — between the operating machine and other people or pets.
• Never operate on wet grass: Loss of traction can lead to slips and loss of control.
• Avoid steep slopes: Operate across slopes, not up and down, to reduce the risk of rollover. If a slope feels unsafe, do not attempt it.
• Do not disable safety features: The engine kill switch, blade/string guard, and other safety mechanisms are there for your protection.
• Refuel with care: Turn off the engine and allow it to cool before refueling. Never smoke near fuel.

For additional safety around your property, especially if you have children or pets, consider protective measures like the 7 ft x 100 ft black polypropylene deer fence to define boundaries and keep wildlife away from active work zones.

Frequently Asked Questions