10 Amp Corded 18" Attachment Capable String Trimmer

In stock
Model
21142
10 Amp 18-Inch Corded String Trimmer is rated 4.0 out of 5 by 63.
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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
$69.99
In stock

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
Power:
Corded
Brushless Motor:
No
Cutting Path:
18 Inches
Line Diameter:
.080" spiral twisted
Line Type:
Dual
Line Advance System:
Bump
Attachment Capable:
Yes
Motor Mount:
Top
Tool Warranty:
3 Years
  • (1) 10 Amp String Trimmer
  • (1) Owner's Manual
Rated 5 out of 5 by from No more gas I got rid of my gas powered products and no longer have to deal with emptying gas tanks, buying gas and treating gas that is going to sit during the winter. It does exactly what the gas powered did and less hassle.
Date published: 2021-07-22
Rated 5 out of 5 by from Love my Greenworks Just bought 60v string trimmer and its a dream. First bought leaf blower then hedge trimmer. All are quiet and powerful. No more gas to buy and no more difficult starts.
Date published: 2021-07-17
Rated 5 out of 5 by from A Beast I have used this trimmer 3 times. Twice on the lawn and to edge, once to reclaim an overgrown area. This trimmer cut through everything with ease. Putting the string onto the spool takes some time to master, but it lasts once done. I am so glad to never have to buy a new battery or get rid of the old ones.
Date published: 2021-06-21
Rated 5 out of 5 by from Awesome tool! I bought two of these to assist in reducing the fire-fuel growth at a property in Clearlake, CA. A site where finding power is a problem, gas-powered trimmers aren't allowed after 9 AM due to sparks and dry conditions, and battery powered trimmers don't have the longevity nor the guts to clear the field. This 10 Amp trimmer, coupled with a small CARB compliant generator, clears 0.6 acre of grass, weeds and star thistle in about 4 hours. After 2.5 years of continual use however the string advance button has worn out and the spring extends through the the center. I've not been able to figure out how to replace that part yet without making a whole new purchase.
Date published: 2021-06-17
Rated 5 out of 5 by from MOTOR IS GOOD OTHER MOTOR REVIEW IS BS ABOUT 12 GAUGE CORD One of the other reviews said motor over heats with a 12 gauge cord. But after you already injure in the motor with smaller gauge cord its will just continue to degrade with any other cord even a 10 gauge. I ran 100 foot 12 gauge cord through 3 foot weeds and some 1/2 inch stems with no rear trimmer shield and it worked good
Date published: 2021-04-19
Rated 5 out of 5 by from Exactly what i expected Exactly what i expected. I wasn't sure i actually purchased because I was confused with the website and how it worked on my phone but i called cosine service and they were so friendly.
Date published: 2021-03-01
Rated 5 out of 5 by from Well Made This is one of the sturdiest, well made electric trimmers that I've seen, and I have been looking for a while. I had to return it, sadly, because the tool is longer than I am, and wouldn't be ergonomically useful for me. I'm so disappointed that I couldn't keep it. I so wish it was adjustable!
Date published: 2020-11-28
Rated 5 out of 5 by from Amazing Tool! I was looking for a corded trimmer to replace my old one and this is an amazing replacement. Full of power!!!
Date published: 2020-11-14
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Rated 5 out of 5 by from No more gas I got rid of my gas powered products and no longer have to deal with emptying gas tanks, buying gas and treating gas that is going to sit during the winter. It does exactly what the gas powered did and less hassle.
Date published: 2021-07-22
Rated 5 out of 5 by from Love my Greenworks Just bought 60v string trimmer and its a dream. First bought leaf blower then hedge trimmer. All are quiet and powerful. No more gas to buy and no more difficult starts.
Date published: 2021-07-17
Rated 5 out of 5 by from A Beast I have used this trimmer 3 times. Twice on the lawn and to edge, once to reclaim an overgrown area. This trimmer cut through everything with ease. Putting the string onto the spool takes some time to master, but it lasts once done. I am so glad to never have to buy a new battery or get rid of the old ones.
Date published: 2021-06-21
Rated 5 out of 5 by from Awesome tool! I bought two of these to assist in reducing the fire-fuel growth at a property in Clearlake, CA. A site where finding power is a problem, gas-powered trimmers aren't allowed after 9 AM due to sparks and dry conditions, and battery powered trimmers don't have the longevity nor the guts to clear the field. This 10 Amp trimmer, coupled with a small CARB compliant generator, clears 0.6 acre of grass, weeds and star thistle in about 4 hours. After 2.5 years of continual use however the string advance button has worn out and the spring extends through the the center. I've not been able to figure out how to replace that part yet without making a whole new purchase.
Date published: 2021-06-17
Rated 5 out of 5 by from MOTOR IS GOOD OTHER MOTOR REVIEW IS BS ABOUT 12 GAUGE CORD One of the other reviews said motor over heats with a 12 gauge cord. But after you already injure in the motor with smaller gauge cord its will just continue to degrade with any other cord even a 10 gauge. I ran 100 foot 12 gauge cord through 3 foot weeds and some 1/2 inch stems with no rear trimmer shield and it worked good
Date published: 2021-04-19
Rated 5 out of 5 by from Exactly what i expected Exactly what i expected. I wasn't sure i actually purchased because I was confused with the website and how it worked on my phone but i called cosine service and they were so friendly.
Date published: 2021-03-01
Rated 5 out of 5 by from Well Made This is one of the sturdiest, well made electric trimmers that I've seen, and I have been looking for a while. I had to return it, sadly, because the tool is longer than I am, and wouldn't be ergonomically useful for me. I'm so disappointed that I couldn't keep it. I so wish it was adjustable!
Date published: 2020-11-28
Rated 5 out of 5 by from Amazing Tool! I was looking for a corded trimmer to replace my old one and this is an amazing replacement. Full of power!!!
Date published: 2020-11-14
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Can I buy a new spool head ,For the corded weed trimmer ? 

Asked by: Anonymous
Hello Valued Greenworks Customer, The trimmer head goes by 31108836 and may be purchased using the following link: https://greenworks.ordertree.com/sun-31108836.html or through our helpline at 1-888-909-6757.
Answered by: Greenworks Customer Care
Date published: 2021-07-26

What size spring does the trimmer take? 

Asked by: Mike HE
Hello Mike HE, Unfortunately, the spring size is not available as it comes as part of the trimmer head assembly. We apologize for any inconvenience that this news may cause. The trimmer head goes by 31108836 and may be purchased using the following link: https://greenworks.ordertree.com/sun-31108836.html or through our helpline at 1-888-909-6757.
Answered by: Greenworks Support
Date published: 2021-07-19

I have a model 21142 trimmer, I am trying to find the hedge trimmer attachment. Could I get the part number or a link to order the attachment? Thanks for your help

Asked by: Tackitt
Hello Tackitt, Thank you for your question! The string trimmer model can be used with many gas attachments. We recommend Trimmer plus, Ryobi expand-it and Poulan pro attachments.
Answered by: Greenworks Customer Care
Date published: 2021-07-12

What is the rpm of the head?

Asked by: Hax0r
Hello Hax0r, Approximately 6000 (± 10%) RPM.
Answered by: Greenworks Support
Date published: 2021-06-24

What grease should I use in the trimmer head?

Asked by: Hax0r
Hello Hax0r, This unit does not require grease or oil.
Answered by: GWT Customer Support
Date published: 2021-06-24

I have the 21142 with the all black trimmer head. I need the replacement spool (with string assembled). What is the part number and where can I purchase the part?

Asked by: JIMbo70
Hello, This unit is designed to be rewound, however, should you require a replacement trimmer head, it goes by part number 31108836 and may be purchased on our parts site: https://greenworks.ordertree.com/. Here is a link to assist with rewinding the line! https://youtu.be/uAgKchFx-_Q
Answered by: Greenworks Support
Date published: 2021-06-21

Can you tell which attached polesaw will work for this model? You should have all available attachments in the product, so people can know about it. I don't know why you don't think about that. I have a very hard time to find the attached polesaw.

Asked by: QQQQTTTT
Hello QQQQTTTT, There are several universal Ryobi Expand-It attachments that can be used with this unit, we do not have a pole saw attachment for this unit. Some of the attachments include a pruner, hedge trimmer, edger, brush cutter, cultivator, and blower but there are many others as well. You can purchase these different attachments at Home Depot.
Answered by: Greenworks Support
Date published: 2021-06-21

How remove the spool cover and spool to replace line?

Asked by: Brazosman2000
Hello there, Here is a video to assist you with this task! https://youtu.be/uAgKchFx-_Q
Answered by: Greenworks Support
Date published: 2021-06-17
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10 Amp Corded 18" Attachment Capable String Trimmer
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