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This greenworks 40v 20 inch push lawn mower review covers the MO40L415 model. It features a 20-inch cutting deck and a 4.0 Ah battery. The brushless motor provides torque without the noise of gas engines. You get a 4-in-1 system for mulching, bagging, side discharge, or leaf pickup. The unit weighs 57.5 pounds and includes an LED headlight. It is designed for yards up to one-third acre. The aluminum handles fold for vertical storage. This spec-based look helps you decide if the dimensions and power match your needs.

  • Brushless motor for efficient power and longer runtime.
  • 20-inch cutting width balances coverage and maneuverability.
  • 4.0 Ah battery supports up to one-third acre per charge.
  • 7-position height adjustment adapts to varying grass lengths.
  • Foldable aluminum handles reduce storage footprint by 70 percent.

Good fit for

You should consider this mower if you have a small to medium yard under one-third acre. The push design suits those who prefer manual control over self-propelled systems. The 4-in-1 versatility helps if you want to mulch, bag, or discharge clippings depending on the season. The LED lights are useful for early morning or evening mowing. The 20-inch deck is manageable for tight spaces, and the foldable handles make garage storage easy for homeowners with limited space.

Who can skip it

Skip this model if you need to mow more than one-third acre on a single charge. The 4.0 Ah battery may require swapping for larger lawns. You might want a self-propelled drive if your terrain is steep or uneven, as this is a push mower. If you need a wider cut to reduce passes, the 20-inch deck is narrower than some alternatives. Also, avoid this if you prefer gas power or do not want to manage battery charging cycles.

Verdict

This mower offers a compact, versatile solution for small yards with its 20-inch deck and 4.0 Ah battery. The brushless motor and foldable design add practical value for space-conscious homeowners.

Key specs explained for this mower

Voltage: 40 V

This voltage rating indicates the electrical potential of the battery system. A 40V setup offers higher power output than 20V models, allowing the motor to handle thicker grass without stalling. You benefit from consistent performance during longer mowing sessions. When comparing cordless options, higher voltage generally correlates with better torque and cutting ability in dense lawns.

Motor Type: brushless

A brushless motor uses electronic commutation instead of physical brushes. This design reduces friction, which extends the life of the motor and improves energy efficiency. You will notice less maintenance over time and potentially longer runtime per charge. This is a key advantage over brushed motors found in older or budget-friendly electric mowers.

Cutting Width: 20 in

The deck width determines how much grass the blade cuts in a single pass. A 20-inch width is a standard size that balances coverage speed with maneuverability. It is suitable for small to medium yards. If you have a large lawn, you might prefer a wider deck to reduce the number of passes required to complete the job.

Battery Capacity: 4.0 Ah

Amp-hours measure the energy storage capacity of the battery. A 4.0 Ah rating suggests the battery can sustain power output for a moderate duration before needing a recharge. This capacity is sufficient for tackling up to a third of an acre under normal conditions. Compare this with 2.0 Ah options if you need shorter runtime or have a very small yard.

Mowing Functions: 4-in-1

This feature allows you to switch between mulching, bagging, side discharge, and leaf pickup modes. You can adapt the mower to different lawn conditions without buying additional attachments. Mulching returns nutrients to the soil, while bagging keeps the lawn tidy. This versatility makes the unit suitable for various seasonal tasks and grass management preferences.

Design and Build Overview

The Greenworks MO40L415 features a green and black finish with aluminum handles. According to the listing, these handles fold to save 70 percent of storage space. This design allows you to store the unit vertically in tight areas like sheds or garages. The single-lever height adjustment offers seven positions. You can change the cutting height in seconds to adapt to different lawn conditions without tools.

The mower measures 65 inches in length, 23.6 inches in width, and 41 inches in height when unfolded. It weighs 57.5 pounds. This weight is manageable for a push mower, but you must lift it for vertical storage or transport. The 20-inch cutting width is standard for residential use. It balances coverage speed with maneuverability around obstacles.

The unit includes an LED headlight for visibility during early morning or evening mowing. The 4-in-1 versatility means you can switch between mulching, bagging, side discharge, and leaf pickup. The aluminum construction contributes to the overall durability and light weight. You get a complete ecosystem value with the battery and charger included. The design prioritizes ease of use and compact storage for typical homeowners.

Setup And Daily Use Guide

The Greenworks MO40L415 arrives with a 4.0 Ah battery and a fast charger included in the box. You do not need to assemble complex mechanical parts. The primary setup task involves inserting the charged battery into the deck. The aluminum handles are designed to fold, which simplifies the initial unpacking and storage process. This feature allows you to store the mower vertically, saving significant space in a garage or shed.

For daily operation, you push the mower. It lacks a self-drive mechanism, so your physical effort determines the speed. The single-lever height adjustment offers seven positions, allowing you to change the cutting height quickly without tools. This system adapts to different lawn conditions in seconds. You can choose between mulching, bagging, side discharge, or leaf pickup using the 4-in-1 versatility system. This flexibility lets you handle tall grass or heavy debris without changing attachments.

The brushless motor provides instant starts, eliminating the pull-cord effort required by gas engines. You benefit from quieter operation and zero emissions. The integrated LED headlight enables you to mow during early mornings or late evenings. The 40V system delivers enough torque to tackle up to one-third of an acre on a single charge, depending on grass density. The unit weighs 57.5 pounds, making it manageable to maneuver around obstacles. You can also expand your toolkit later, as this battery is compatible with over 75 other Greenworks 40V tools.

Before You Buy This Greenworks Mower

This mower fits well if you already own other Greenworks 40V tools. The listing notes compatibility with over 75 devices, including trimmers and blowers. Sharing batteries across your toolkit reduces upfront costs and simplifies charging logistics. Check your existing battery capacity. The 4.0 Ah unit covers up to one-third of an acre. Larger lawns may require a 5.0 Ah or higher capacity battery for a single charge. Verify your shed space. The folding aluminum handles save 70 percent of space when stored vertically. Ensure your storage area accommodates the folded height. Consider the 4-in-1 versatility. You can mulch, bag, side-discharge, or pick up leaves. If you frequently deal with tall grass, the side discharge option is practical. Regular upkeep involves cleaning the deck after use to prevent rust. Keep the blade sharp for clean cuts. This model sits in the mid-range for push mowers. It offers brushless efficiency without the complexity of self-propelled systems. It suits owners with small to medium yards who value quiet operation and zero emissions.

Check before you buy

  • Check if you own other 40V Greenworks tools for battery sharing.
  • Verify your lawn size is under one-third acre for the 4.0 Ah battery.
  • Measure your storage space for the vertical folded configuration.
  • Confirm the 20-inch cutting width matches your yard's access paths.
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Greenworks 40V 20-Inch Push Lawn Mower

Greenworks 40V 20-Inch Push Lawn Mower

Best for: small lawns under 1/3 acre

Cutting Width
20 in
Drive Type
push
Voltage
40 V
Battery Capacity
4.0 Ah
Mowing Functions
4-in-1
Motor Type
brushless

This Greenworks mower uses a 40V brushless motor and a 4.0 Ah battery to handle up to 1/3 acre per charge. The 20-inch cutting deck offers 7 height positions and 4-in-1 versatility for mulching, bagging, side discharge, or leaf pickup. It weighs 57.5 pounds and includes LED lights for low-light mowing. The foldable aluminum handles save storage space. This model suits small to medium lawns seeking a quiet, fume-free alternative to gas.

Pros
  • 40V brushless motor provides high torque and instant starts
  • 4.0 Ah battery supports up to 1/3 acre runtime
  • 20-inch cutting width with 7-position height adjustment
  • 4-in-1 functionality for mulching, bagging, or discharge
  • LED headlights improve visibility during early or late mowing
Cons
  • 57.5-pound weight requires manual pushing without drive assistance
  • 4.0 Ah battery capacity limits total runtime compared to higher-capacity options
  • 20-inch cutting deck covers less area per pass than wider models
Good fit if
  • You have a lawn under 1/3 acre
  • You prefer quiet, zero-emission operation
  • You need versatile clippings management options
Skip if
  • You have a large lawn exceeding 1/3 acre
  • You require self-propelled drive for hilly terrain
  • You prefer a wider cutting deck for faster coverage

Verdict: Greenworks 40V 20-Inch Push Mower fits homeowners with small yards who value quiet, fume-free operation and versatile clippings handling. It is ideal for those willing to push the mower manually for precise, manageable cuts.

Specifications side by side

SpecGreenworks 40V 20-Inch Push Lawn Mower
Cutting Width20 in
Drive Typepush
Voltage40 V
Battery Capacity4.0 Ah
Mowing Functions4-in-1
Motor Typebrushless
Height Adjustments7-position
Dimensions65 × 23.6 × 41 inches
Weight57.5 pounds
Size40V 20" Mower (4.0Ah) + LED Lights
ColorGreen&Black
ModelMO40L415

Frequently asked questions

Is the Greenworks 40V 20-Inch Push Lawn Mower suitable for large lawns?

This mower is designed for small lawns under one-third of an acre. The 20-inch cutting width and manual push design require more effort over large areas. It is best for homeowners who prefer precise, manageable cuts in compact spaces rather than covering extensive terrain quickly.

How heavy is the Greenworks MO40L415 mower?

The unit weighs 57.5 pounds. This weight includes the 4.0 Ah battery. While it is a push mower, the aluminum handles make it manageable for most users. The compact dimensions allow it to fit in tight storage areas, folding to save seventy percent of space.

Does this mower have a brushless motor?

Yes, the Greenworks MO40L415 features a brushless motor. This type of motor provides high torque without the noise associated with gas engines. It also offers consistent performance and longer lifespan compared to brushed alternatives, making it suitable for quiet, fume-free operation in residential neighborhoods.

What battery capacity does this Greenworks mower use?

It uses a 4.0 Ah battery. This capacity works with the 40V system to deliver power for typical small-yard tasks. The battery is included with a fast charger. You can share it with over seventy-five other Greenworks 40V tools, simplifying your charging logistics and toolkit management.

Can I use this mower for mulching and bagging?

Yes, it supports a 4-in-1 system. This allows you to mulch, bag, side discharge, or rear discharge clippings. The 20-inch deck accommodates various grass handling needs. This versatility makes it a practical choice for homeowners who want to manage yard waste in different ways depending on the season.

Does the Greenworks 40V mower have LED lights?

Yes, the product size description includes LED lights. These lights help you see the cutting path in low-light conditions. This feature is useful for early morning or evening mowing sessions. It enhances visibility without requiring additional external lighting equipment, ensuring a clear view of the grass.

How do I store the Greenworks MO40L415 mower?

The aluminum handles fold to save seventy percent of storage space. You can store the unit vertically in tight areas like sheds or garages. The compact folded dimensions measure 23.6 inches in width. This design feature makes it easy to keep the mower out of the way when not in use.

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