GreenWorks 21142 10Amp 18-Inch Corded String Trimmer

Product Name:21142
Power source:Corded
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Key product information

  • Attachment capable, accepts most gas attachments to provide mulitple use
  • 10Amp 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
  • Compatible GreenWorks Replacement Spool, Model 29622

Product description

What attachments can I use it with?
According to Greenworks official website ( you can use it with: Quick-Connect Coupler for easy attachment change (Fits Greenworks, Yardworks, Ryobi and TrimmerPlus).

A video of Greenworks 21142

Customer reviews

Fast, Easy to Use and Lightweight!, ★★★★★

I hate to buy products that have not been reviewed by other Amazonians, which I have come to rely on when making purchases, but I took the risk this time – and I am glad I did and I am happy to write a review.

I replaced a 15 inch Weedeater with the 13 inch Greenworks trimmer. I got about 60 uses out of the Weedeather before it ceased to function. It was too large and too heavy and bulky for my yard where I have a lot of fences and landscaping rocks to trim around. The fact that the trimmer has TWO trim lines is also very important because the string lasts longer and the two lines cut about twice as fast.

The Weedeater’s string advance system never worked well – had to turn the unit over and pull out the string by hand. BUT THE GREENWORKS TRIMMER LINE ADVANCE ACTUALLY WORKS!!! Just release the ON trigger for two seconds and it advances automatically (you will hear it click). I wear the the strings down really fast trimming around rocks, so I have to click it off and on several times to get the string out to full length, but that takes about 5 seconds. I think the unit will not use (waste) as much string as the Weedeater. The 4 amp motor has sufficient power for fast trimming.

The unit was double boxed for shipping. It has an adjustable length handle, which is still a bit short for someone who is 6’4″, but it works well. It was very easy to assemble – about 10 minutes. I would estimate it cut my trim time from 1.5 hours to about 45 minutes. (source)


Absolutely Fabulous ★★★★★

I have used a lot of different electric weedeaters over the years and just have to say that this little Greenworks is the best of all of them. I am a 60-year-old woman so weight is an issue and the Greenworks is extremely light and easy to hold. Also like the on switch, which is a couple of inches long instead of just being big enough to hold with one finger. There is very little vibration compared to others I have used, so your hand and arm aren’t tingling for the next few hours. The telescoping handle is a great feature so you can really adjust the height to match your own. You know how with most weedeaters you can spend more time with trying to keep the string untangled or getting cut off or changing string than you do actually working. I can use this weedeater for hours and never have to stop once for any type of maintenance and there will still be string left. The double string is very durable and does one heck of a job on even tall weeds. The extension cord can be attached so it doesn’t come off, which is a nice feature. I have over an acre of almost solid weeds to deal with so am truly appreciative of this great little machine. Makes my life a whole lot easier. I highly recommend the Greenworks Electric String Trimmer/Edger, worth every penny. (source)

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