Greenworks 40V 20in Push Lawn Mower Review: Specs, Pros and Cons

What stands out

• Brushless motor provides high torque and efficiency.
• 4.0Ah battery supports up to 1/3 acre per charge.
• 20-inch cutting width balances coverage and maneuverability.
• Folding aluminum handle saves 70% storage space.
• 7-position single-lever height adjustment adapts to any lawn.

Who it fits

Key specs explained for Greenworks

Voltage: 40V

This rating indicates the electrical pressure the motor uses to generate torque. A 40V system provides enough power to cut through thick or wet grass without stalling. You can compare this to 20V models, which may struggle in dense turf. Higher voltage generally means consistent performance across varying lawn conditions.

Motor Type: brushless

Brushless motors use electronic switches instead of physical carbon brushes to commutate current. This design reduces friction and heat, leading to longer motor life and better energy efficiency. You will likely notice extended runtime per charge compared to brushed alternatives. It also means less maintenance since there are no brushes to replace over time.

Battery Capacity: 4.0Ah

Amp-hours measure the total energy stored in the battery. A 4.0Ah capacity allows the mower to run for a longer duration before needing a recharge. This is suitable for lawns up to one-third acre. When shopping, compare this to 2.0Ah options, which offer shorter runtime, or larger 5.0Ah packs for bigger yards.

Cutting Width: 20 in

This measurement defines the diameter of the grass swath the deck cuts in one pass. A 20-inch width balances coverage speed with maneuverability in tight spaces. It is ideal for small to medium lawns with garden obstacles. Wider decks cover more ground faster but require more turning radius, while narrower decks are slower but easier to handle.

Mowing Function: 4-in-1

This feature allows you to choose between mulching, bagging, side discharge, or leaf pickup modes. You can adapt the mower to different grass lengths and cleanup needs without changing attachments. This versatility is useful if you want to recycle nutrients into the soil or collect clippings for compost. It eliminates the need for multiple specialized tools.

Cutting Height: 7 positions

The deck offers seven distinct height settings to adjust how high the grass is cut. This allows you to match the cut to seasonal grass growth or lawn health requirements. Higher settings protect grass roots in summer heat, while lower cuts provide a manicured look. Adjustable height ensures you can maintain your lawn effectively throughout the changing seasons.

Design and Build Overview

The Greenworks 40V 20-Inch Push Lawn Mower (MO40L415) uses a green and black finish. The listing describes the handle as foldable aluminum, which helps you save storage space. According to the listing, this design allows for vertical storage that saves 70 percent of space compared to rigid handles. This is practical for garages or sheds with limited floor area.

The unit weighs 57.5 pounds. It measures 41 inches in height and 65 inches in length when assembled. The width is 23.6 inches. These dimensions indicate a standard push mower footprint. The 20-inch cutting deck fits into typical garden pathways. You can maneuver it around flower beds and patio edges without excessive difficulty. The weight is moderate for a push model, requiring you to lift it slightly for transport.

Controls are straightforward. A single lever adjusts the cutting height across seven positions. You can change this setting quickly to adapt to different grass conditions. The layout places the handle at a comfortable reach for most users. The LED headlight is integrated into the front, providing visibility for early morning or evening mowing. The build focuses on utility and compact storage rather than luxury features.

Setup And Daily Operation Details

You begin by attaching the foldable aluminum handles to the main deck. The listing states this design allows for vertical storage, saving seventy percent of space. You then connect the included 4.0Ah battery to the fast charger. Once charged, you insert the battery into the mower’s compartment. The unit weighs 57.5 pounds, so you lift it with care. For daily use, you adjust the single-lever height mechanism. It offers seven positions to adapt to any lawn condition. You push the mower across the grass. The 40V brushless motor drives the 20-inch cutting deck. You can choose your preferred cutting style using the 4-in-1 versatility feature. You may mulch clippings, bag them, or use side discharge for tall grass. The turbo leaf pickup option handles heavy debris. If you mow in low light, you activate the bright LED headlight for visibility. The battery capacity supports up to one-third acre on a single charge, though this varies by grass conditions. The mower works with over seventy-five other Greenworks 40V tools. This includes trimmers, blowers, and chainsaws. You can expand your toolkit by swapping the same battery type across devices. The 3-year limited warranty covers both the tool and the battery. You maintain the unit by cleaning the deck and checking the blade. The push drive type requires no self-propulsion mechanism, so you control the speed entirely.

Ownership And Ecosystem Notes

This mower belongs to the Greenworks 40V ecosystem. You can share the included 4.0Ah battery with over 75 other tools, such as trimmers and blowers. Check your existing toolkit to ensure compatibility before buying extra batteries. The unit weighs 57.5 pounds. You must handle it carefully during maintenance. Keep the blade sharp for clean cuts. The 4-in-1 system lets you mulch, bag, side-discharge, or use turbo leaf pickup. Choose the mode that fits your grass type. The 20-inch deck suits small to medium lawns. If you have larger areas, consider models with wider decks or self-propelled drives. This push model requires you to walk behind it. Ensure your yard layout allows for easy maneuvering. The LED lights help you mow in low light. Plan your charging schedule around the fast charger. This setup keeps your lawn tidy without gas fumes.

Check before you buy

• Verify compatibility with existing Greenworks 40V batteries.
• Check if 20-inch width fits your gate openings.
• Confirm you can walk behind the push model.
• Ensure you have space for vertical handle storage.

The product at a glance

1

Greenworks 40V 20-Inch Push Lawn Mower

Best for: Small lawns under one-third acre

Cutting Width

20 in

Voltage

40V

Drive Type

Push

Battery Capacity

4.0Ah

Cutting Height

7-position

Mowing Function

4-in-1

View on Amazon: Greenworks 40V 20-Inch Push Lawn Mower Affiliate link

This Greenworks 40V push mower features a 20-inch cutting width and a brushless motor. It includes a 4.0Ah battery and charger, allowing you to tackle up to one-third of an acre per charge. The 4-in-1 design offers mulching, bagging, side discharge, and leaf pickup. An LED headlight aids visibility, while the foldable handle saves storage space. It suits users seeking a quiet, fume-free option for small to medium lawns.

Pros

• Brushless motor provides high torque and efficiency.
• 4.0Ah battery supports up to one-third acre runtime.
• 4-in-1 versatility for mulching, bagging, or discharge.
• LED headlight improves visibility in low light.

Cons

• Push drive requires physical effort to operate.
• 57.5-pound weight may be heavy for some users.
• Limited to one-third acre coverage per charge.

Good fit if

• You need a quiet, emission-free mower for small yards.
• You want a single tool for mulching and bagging.
• You prefer vertical storage to save space.

Skip if

• You have a lawn larger than one-third acre.
• You require self-propelled ease for hilly terrain.
• You prefer gas-powered tools for maximum runtime.

Verdict: Greenworks 40V 20in Push Mower is a solid choice for small yards up to one-third acre, offering quiet operation and versatile cutting modes for users who do not need self-propelled power.

Specifications side by side

Frequently asked questions

See also

• greenworks 40v 20in push lawn mower alternatives
• best greenworks cordless lawn mowers
• greenworks 40v 16 inch push lawn mower review
• greenworks 40v 8 in pole review