Greenworks LMF414 40V 21 inch Electric lawn mower: In-Depth Review and Customer Opinions

The Greenworks 40V 21" Self-Propelled Cordless Brushless Lawn Mower is an efficient electric lawn mower powered by Greenworks' G-MAX 40V Li-Ion battery system. This mower features a durable 21" steel deck, brushless motor for optimal power and runtime, and a variable-speed 7 position single lever as well as 3-in-1 capability to side discharge, mulch or rear bag grass clippings. With smart cut technology, this mower adjusts power on demand to provide up to 60 minutes of runtime on a fully charged 4Ah battery.

Key features and specs:

• 40V G-MAX lithium-ion battery compatible
• Brushless motor for optimal power and runtime
• 21" cutting deck
• 3-in-1 capability: side discharge, mulch or rear bag
• 7-position single lever height adjustment
• Up to 60 minutes of runtime on a fully charged 4Ah battery
• Smart Cut technology adjusts power on demand
• Durable steel deck
• 2 year warranty

Design

The Greenworks 40V 21-inch cordless electric lawn mower features an impressive, streamlined design. At just over 50 pounds, it is lightweight and easy to maneuver compared to gas mowers. The deck is made from sturdy plastic that resists dents, dings, and rust.

The mower stands about 16 inches tall. With the handle fully extended, it reaches approximately waist height for ease of pushing and guiding the mower. The total length is 21 inches for the cutting deck width. This moderate size is suitable for small to mid-sized yards up to about 1/4 acre.

The space-saving design includes vertical storage capability. The handle folds down completely to minimize the storage footprint. Durable plastic wheels provide mobility when transporting or storing the mower. Overall, the thoughtful design focuses on storability and transportability in addition to cutting performance.

Blades and Cutting Deck

The Greenworks 40V 21 inch electric lawn mower comes equipped with durable steel blades that deliver powerful cutting performance. It has a 21-inch wide cutting deck, which allows you to mow more grass in fewer passes, saving you time.

The cutting height is adjustable between 1-3/4 inches to 3-3/4 inches, in 1/4 inch increments, allowing you to maintain your lawn at just the right height. The deck design helps lift grass upright for an even cut.

For mulching capabilities, this Greenworks mower has a rear bagging system or side discharge option. The mulching plug can be attached to recirculate grass clippings back into the lawn as a natural fertilizer. The high-efficiency brushless motor provides plenty of power and torque to handle mulching thick grass.

Overall, the 21-inch steel deck allows robust and versatile cutting performance with adjustable heights and effective mulching capabilities. The durable steel blades stay sharp for clean cuts on every pass.

Battery and Motor

The Greenworks LMF414 lawn mower is powered by a 40 volt lithium-ion battery. This provides enough power and runtime for most average-sized suburban yards. The battery takes about 60 minutes to fully charge with the included charger.

The mower is equipped with a 21" steel cutting deck and a brushless motor that delivers excellent power. The brushless motor is quiet yet efficient, providing enough torque to power through thick grass. The motor and blade can handle grass up to 4-inches high.

The battery generally provides about 45 minutes of runtime when mowing at maximum power on a full charge. This is sufficient to mow up to 1/4 acre on a single charge. The total mowing time will vary depending on yard size, grass height and density. The battery can be easily removed for charging; a spare battery can be purchased to extend mowing time for larger yards.

Overall, the 40 volt battery provides ample power and runtime for mowing most suburban yards efficiently on a single charge. The fast charging time makes it easy to quickly recharge the battery when needed.

Features

The Greenworks 40V 21-inch mower comes with several useful features that improve the mowing experience.

Self-Propulsion

This mower has a self-propelled rear-wheel drive system, which makes it easier to maneuver the mower without having to push it manually. Once engaged, the self-propulsion allows the mower to move forward on its own as you walk behind it and guide it. This makes mowing slopes and bumpy terrain much simpler.

Runtime Meter

There is a digital runtime meter near the battery compartment which shows the remaining charge level. This allows you to monitor battery life and ensure you don't run out of juice mid-mow.

Attachments

The mower deck allows attachments like a mulch kit and bagger to be added on. This provides versatility - you can mulch clippings back into the lawn for nutrition or collect them in a bag for easy disposal. The attachments help optimize the mowing results.

Ease of Use

The Greenworks 40V 21-inch electric lawn mower is designed for easy handling and maintenance. Its compact and lightweight body makes it easy to maneuver around landscaping features and stored when not in use.

Users report that the mower handles smoothly across various terrain thanks to its rear wheel drive system and 10-inch front wheels. The handles are adjustable to accommodate users of different heights. Starting the mower only requires inserting the battery and pressing a button. No pull cords required!

This electric mower operates quietly at only 60 decibels, much quieter than gas-powered mowers. The quiet operation makes it ideal for use in neighborhoods or early morning mowing sessions.

Maintenance is straightforward with no gas, oil or filters to regularly change. The mower deck can be washed with a garden hose to keep the underside clear of clippings. The mower comes with a 4-year tool warranty and 2-year battery warranty, providing peace of mind for years of reliable use.

Overall, the user-friendly design, quiet operation, and minimal maintenance requirements make the Greenworks 40V a very easy electric mower to own and operate.

Performance

The Greenworks LMF414 delivers impressive cutting performance for its class. The brushless motor provides plenty of power to cut through thick grass, while the dual blades leave a clean, even cut quality on each pass.

The 21-inch wide deck allows you to cut more grass in each sweep, helping you finish faster. Users report the 4.0Ah 40V lithium ion battery provides up to 60 minutes of continual mowing on a full charge, allowing you to tackle moderate to large size yards on one battery.

When using the rear mulching plug, the LMF414 finely chops up grass clippings and leaves no clumping on the lawn. The mulching action returns nutrients to the soil for a healthier lawn. The generous 9.75 inch rear wheels and 7 inch front wheels roll smoothly over uneven terrain, maintaining consistent cutting height and preventing scalping.

Overall, the LMF414 offers impressive mowing performance that rivals gas mowers, with the quiet, emissions-free operation of battery power. The brushless motor and lithium ion battery supply plenty of cutting power and runtime to mow most suburban yards efficiently.

Pros

• The 21-inch wide cutting deck allows you to mow more grass in one pass, cutting down on mowing time.

• The brushless motor provides reliable power without overheating or excessive noise. Reviews mention the motor runs very smoothly.

• The steel blades deliver a clean, even cut. The dual blade design improves clipping circulation so the grass is mulched very finely.

• The 2-in-1 design lets you either mulch or bag clippings. The high capacity 10 gallon clipping bag means less stopping to empty.

• The vertical foldaway design makes storage compact and convenient. It stands vertically on end.

• The 40V 4Ah lithium-ion battery runs for up to 60 minutes on a full charge. The battery pack is lightweight at only 5 lbs.

• This mower is self-propelled, so you don't have to push it yourself. Just squeeze the variable speed trigger to control the pace.

• It has a 3-year tool warranty and a 4-year battery warranty, longer than many competitors.

• Greenworks is a reputable brand with generally positive reviews on their electric lawn equipment.

Cons

The Greenworks 40V 21-inch cordless electric lawn mower does have some drawbacks to consider before purchasing.

• The battery life is not as long as some competitors, with some users reporting it lasts only 30-45 minutes per charge. This may not be enough to finish mowing larger yards on one charge.

• It lacks advanced features like self-propelled rear-wheel drive, which some users miss from gas mowers. You'll have to push the mower manually.

• The mulching performance is just average and leaves some clippings on top of the lawn instead of finely cutting them. A separate mulching blade may be needed to improve it.

• At 70 pounds, it is heavier than some other cordless electric mowers. The weight combined with no self-propelled feature makes it more difficult to maneuver and push uphill.

• There are mixed reviews on the durability, with some users reporting issues with parts like the plastic wheels breaking too soon. More long-term testing may be needed.

• While it is fairly quiet, a few users felt it was louder than expected for an electric mower. Gas mowers are still louder, but this may not be as whisper quiet as some buyers want.

• At $399 MSRP, it is pricier than some basic electric mowers. The extra power and features come at a cost.

So while the Greenworks 40V has excellent power and useful features, its battery life, maneuverability, mulching ability and noise level may disappoint some buyers expecting the peak of electric lawn mower performance. Look at competitors as well before deciding if it's the best cordless option for your lawn care needs.

Conclusion

The Greenworks 40V 21-Inch Brushless Self-Propelled Lawn Mower is a strong contender in the electric lawn mower market. With its brushless motor, smart cut technology, and decent 21-inch cutting deck, it offers reliable cutting performance for small and mid-sized yards.

The two 4Ah batteries provide up to 60 minutes of run time, allowing you to mow up to 1/4 acre on a single charge. This makes the mower a good option for small suburban lots. The batteries charge quickly in 2-3 hours, minimizing downtime between mowing sessions.

For easy maneuverability, the Greenworks mower offers variable speed self-propelled rear-wheel drive. This allows you to adjust the pace to your walking speed. The lightweight frame and 7-inch front wheels also enhance maneuverability around landscaping and obstacles.

Overall, the Greenworks 40V Brushless Self-Propelled Mower is a great choice if you have a small to medium lawn and want an environmentally friendly, quiet mower without the hassles of gas. It offers convenient electric start, decent power and runtime, and good cutting performance. Just be prepared to buy an extra battery or two for larger yards.