10 Amp Corded 18" Attachment Capable String Trimmer

Out of stock
Model
21142
$69.99
Out of stock
10 Amp 18-Inch Corded String Trimmer is rated 4.0 out of 5 by 38.
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  • 10 Amp motor with straight shaft and .080 dual line bump feed
  • Light weight and simple electric start with cord lock feature makes it easy to use
  • Large 18" cutting path helps speed up the trimming process
  • Attachment capable design accepts attachments from multiple brands such as Ryobi, TrimmerPlus, Yardworks and more*
  • 3 Year Limited Warranty

Get your yard work done with more efficiency with this Greenworks 18" 10 Amp Corded String Trimmer. The all-electric operation of the Greenworks' line of tools provides not only reliable performance and dependability, but also offer a clean running alternative to gas powered tools. Each one comes with a variety of performance and safety features that not only help you get the job done right, they also promise carbon emission-free operation for a cleaner environment. Lightweight yet powerful, this Greenworks electric trimmer has become known as the most powerful electric trimmer on the market. Boasting an 18" cutting path, it delivers the same great performance you'd expect from a gas trimmer in a lighter, eco-friendly design. Constructed with a durable straight shaft and comfortable molded grip for longer operation, this trimmer delivers in both performance and reliability.

  • 10 Amp motor with straight shaft and .080 dual line bump feed
  • Light weight and simple electric start with cord lock feature makes it easy to use
  • Large 18" cutting path helps speed up the trimming process
  • Attachment capable design accepts attachments from multiple brands such as Ryobi, TrimmerPlus, Yardworks and more*
  • Cushion and over-mold grip and handle for operator comfort with auxiliary handle for more control when trimming.
  • Quick-connect coupler allows for easy attachment changes and fits various name brands
  • Replacement .080 Dual Line Spool - Model 29622
  • 3 Year Limited Warranty
Rated 5 out of 5 by from Most powerful electric trimmer I've found I was sick of messing with gummed up carbs from my trimmers sitting for long periods and my previous attempt with a corded trimmer left a lot to be desired, but after noting this was about 2x as powerful, I took a chance. Fantastic. Lighter than my gas powered trimmer, about as powerful, and takes all the old attachments. I was a little worried about using the edger attachment, but it worked just fine. After about 45 min of continuous use, there were no signs of overheating or anything which was my big concern. Can't recommend this enough - just take time to plan your route and the cord is a non-issue.
Date published: 2018-08-10
Rated 5 out of 5 by from First impression is positive Plenty of power. Line is a little wimpy. May have to see what I can do to improve the diameter of the line. I have read on-line that string replacement can be challenging. I have not had it long enough to have to replenish the string. My main complaint is that the trimmer head rotates counterclockwise- so debris is thrown against my feet since I am right handed. If I could figure out how to make it rotate the opposite direction I would. That would be a big improvement. Other than that I am quite happy with it the 3 times I have used it so far. Check back with me at the end of the mowing season.
Date published: 2018-06-26
Rated 3 out of 5 by from Good, with issues I bought this 3 years ago. In that time I've had trouble keeping the head from loosening from vibration, the bolt that holds the two-part handle together sheared off. ( Good steel bolts don't do this ), the steel handle became extremely warm from some sort of internal friction. Try as I might I cannot quite get the tool to balance so the weight is even and the tool swings comfortably while using it. There is no well-thought-out loops or attachment points for a shoulder strap that would take the weight of the motor/hand-piece and support it. This MAY give it that balance I have not been able to achieve. The safety/trigger arrangement is small and difficult to hold down. It tends to cramp my fingers after long use. It makes it safe as it takes EFFORT to hold it down so accidentally starting the motor is highly unlikely but using it is not pleasant. The string feed, like most string feeds, is basically garbage so I switched it out for nylon knife-like cutter blades. These last a long time. Recently the guard decided to fall off without warning and the bolt and clamp that held it flew off in different directions and without a metal detector I will not be able to find them. I came here to seek parts but they are not offered. I may contact customer service, so at this point it would be unfair to say Greenworks does not offer them. The motor is quite powerful, which is good, but it's design could be better, the weight more evenly distributed, solid loops could be added to attach a shoulder strap and a shoulder strap could be provided or offered to help with the weight of this awkward thing that tends to strain your lower back over time. Love it and despise it, but too cheap to throw it out and so far unable to find a great way to customize it to my satisfaction.
Date published: 2017-07-06
Rated 5 out of 5 by from Lots of power, low vibration I have three gasoline powered string trimmers that I cannot use anymore due to the damage to my hands caused by the vibration of the internal combusion engines. The usual corded string trimmer you find at the box stores is just too weak to do any serious work. This unit does the job. It has plenty of power, is easy to restring, is well balanced (no heavy motor hanging on the end), and vibration is very low. I use a 100' 12 gauge extension cord with a 25' 16 gauge "pigtail" ( lighter and easier to handle), all wound on a thrift store hose reel with wheels. No more tingly hands! That being said, the machine is far from silent and it literally screams at you to the point where you may consider using some hearing protection. The cutting spool also rotates counterclockwise which means that your primary cutting direction should be from right to left to avoid stuff being thrown back at you.
Date published: 2018-05-14
Rated 3 out of 5 by from Extremely powerful The strongest corded electric string trimmer made, maybe the only one as powerful as strong gasoline-powered products. The user manual describes a different string spool assembly cover and says the spool can be accessed by unscrewing a plastic cap at the end. Actually it's held together by a pair of snaps on the sides that have to be squeezed together to release the cover. A 6" long metal rod is included but not documented. It's for holding the driveshaft so it doesn't turn when removing the entire string spool assembly but is not needed for just changing the string.
Date published: 2017-06-22
Rated 1 out of 5 by from Lot's of power, over heats, melts line At first i was very happy with this trimmer, it had tons of power and the edging attachment works great. My problems started fairly quickly though, the trimming line kept melting inside the head. Greenworks customer support was beyond useless, I think there was a lubrication issue in the head. So i started using it just for edging, the metal blade can't melt! Then while performing some intense edging for the first time this year, the motor overheated and fried, even while using a 12 gauge, 50' cord. I contacted customer support again but have not gotten any response yet a week later.
Date published: 2019-06-28
Rated 5 out of 5 by from Power and Strength! We have some pretty tough vegetation here in south Texas, and .065 string just doesn't do the job - would go through over half a spool in one cutting! So glad to have the thicker string offered in a corded electric trimmer. I've never had a bump feed trimmer before, so I need to get more familiar with that function, but this tremor is powerful and durable...perfect for tougher stuff!
Date published: 2018-04-11
Rated 4 out of 5 by from No more pull cords to drive me insane I purchased Greenworks 18-Inch 10 Amp Corded String Trimmer (Attachment Capable) 21142 just over a couple of months ago and congratulate myself every time I use it.The only drawback is that I also purchased the compatible replacement spool (29622) that doesn't fit (or even look like it fits).
Date published: 2018-08-11
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Greenworks 18-Inch 10 Amp Corded String Trimme 21142 spoon shaft head screw size and threads

Asked by: Anonymous
Hello there, The shaft is 1" and arbor/ nut size is 3/8".
Answered by: GWT Customer Support
Date published: 2020-07-09

I need the part number for the complete bumper head assy Unit is for 21142 trimmer

Asked by: Twig
Hello Twig, The part number for the TECOMEC brand trimmer head 31110836 can be purchased from our third-party part site here: https://greenworks.ordertree.com/ Replacement parts can also be ordered directly from GreenWorks kindly contact us at 1-888-909-6757 (1-888-90WORKS). Currently, this part is out of stock.
Answered by: GW Customer Agent
Date published: 2020-06-30

Is the "10 Amp 18 in. Corded String Trimmer" being discontinued? I noticed a lot of places are out of stock for this item so I was curious as to why this was.

Asked by: dwilli12
Hello dwilli12, This unit is expected to be in stock closer to end of August.
Answered by: GWT Customer Support
Date published: 2020-06-30

what parts are needed to convert the "Old" Model #21142, to the newer model? This in regard to the "Bump Feed" lower unit of the unit.

Asked by: Russell Pancamo
Hello Russell Pancamo, Unfortunately, this option is not available at this time.
Answered by: GreenWorks Support
Date published: 2020-06-23

I just bought 21142 trimmer , trying to attach the guard, it does not attach snug to the shaft. Wing screw cannot be tightened completely. Need help.

Asked by: Raja
Hello Raja, Here's a video guide: https://www.youtube.com/watch?v=QvUq8RzUdw4 If you continue to experience issues, you may need to contact us at info@greenworkstools.com for further assistance. Please note due to the current pandemic COVID-19 we are experiencing delays. We thank you for your patience and apologize for any inconvenience you may encounter while contacting us.
Answered by: GreenWorks Support
Date published: 2020-06-23

Which attachments are available for this?

Asked by: Drsanti
Hello Drsanti, Here are the compatible attachments: https://www.greenworkstools.com/7-5-inch-edger-attachment https://www.greenworkstools.com/22-inch-hedge-trimmer-attachment https://www.greenworkstools.com/9-inch-cultivator-attachment https://www.greenworkstools.com/8-inch-pole-saw-attachment https://www.greenworkstools.com/145-mph-horizontal-blower-attachment https://www.greenworkstools.com/22-inch-hedge-trimmer-attachment The attachments that are currently out of stock will be available in the up coming months July/August.
Answered by: GWT Customer Support
Date published: 2020-06-18

I purchased the 21142 String Trimmer and would like to know if the ATIE 10" Inch x 3 Teeth Steel Brush Cutter, Trimmer, Weed Eater Blade will fit this trimmer. If so, do I need an adaptor? Which adaptor kit would that be if needed. Thanks

Asked by: winanskeith
Hello winanskeith, We advise against attach a blade to the head. Instead we would recommend the whole lower attachment be replacement. The compatible attachments are: Poulan Pro, Trimmer Plus and Ryobi Expand-it.
Answered by: GWT Customer Support
Date published: 2020-06-17

Where do I buy the attachments like brushcutter, tiller, saw etc for 21142 10 amp corded trimmer? and pricing for those attachments? thanks.

Asked by: nsetalguy
Hello nsetalguy, The compatible brands are Poulan Pro, Trimmer Plus and Ryobi Expand-It. Please note GreenWorks also has a list of attachments that are compatible. https://www.greenworkstools.com/7-5-inch-edger-attachment https://www.greenworkstools.com/22-inch-hedge-trimmer-attachment https://www.greenworkstools.com/9-inch-cultivator-attachment https://www.greenworkstools.com/8-inch-pole-saw-attachment https://www.greenworkstools.com/500-cfm-blower-attachment https://www.greenworkstools.com/145-mph-horizontal-blower-attachment *Out of stock attachments will be available in the next few months*
Answered by: GWT Customer Support
Date published: 2020-06-15
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Cutting Path:
18 Inch
Edging Capable:
No
Line Diameter:
.080 Inch
Spool Type:
Dual
Line Feed:
Bump
Attachment Capable:
Yes
Motor Mount:
Top
Telescoping Shaft:
No
Tool Warranty:
3 Year
Battery Capacity:
-
  • (1) 10 Amp String Trimmer
  • (1) Owner's Manual

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