Greenworks 4 Amp 13" Corded String Trimmer

SKU: 21212CA  |  Model # STA805
$99.99
Shipping calculated at checkout.

Key Features

  • Rotating Shaft
  • Telescoping Shaft
  • Lightweight
  • Automatic Feed - Automatic dual line management system to ensure your line stays viable for cutting.

SHOP WITH CONFIDENCE

Compatible With :

Description

Welcome to a Life. Powered. by Greenworks. Kick gas to the curb and go green! Get your yard work done efficiently and effectively with Greenworks corded string trimmers. The all-electric operation of the Greenworks' line of tools provides not only reliable performance and dependability, but also offers a clean running alternative to gas powered tools. Lightweight yet powerful. Boasting an 13" 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 telescoping shaft and dual line auto feed head, this grass trimmer delivers in both performance and reliability. Plus, our corded trimmers are backed by a 3-year limited tool warranty to ensure your investment is protected!

  • [POWER] Powered by a 4 Amp high-efficiency electric motor for high-quality trimming every time.
  • [PERFORMANCE] Gas-like power at the push of a button; providing speeds up to 9000 (± 10%)RPM.
  • [AUTO FEED] 13-inch cutting path gets the job done fast. Automatic 0.065" dual line feed system to ensure your line stays viable for cutting. Simply, stop and start your trimmer to increase the length of your line.
  • [TELESCOPING SHAFT] Telescopic design to allow the user to customize shaft length for the best experience.
  • [LIGHTWEIGHT] Lightweight design, along with superior ergonomics and an adjustable handle allow for reduced user fatigue and ultimate comfort during big jobs.
  • [GETS THE JOB DONE] Corded power with unlimited runtimes, you can get all of your landscaping done with all the power performance of gas while at a lower cost of operation.
  • [INCLUDES] String trimmer and owner’s manual.

Specifications

  • Amp Hours
    4Ah
  • Weight
    5.2 lbs.
  • Assembled Product Dimensions
    47.6" x 11.4" x 12.8"
  • Package Dimensions
    39.7" x 10.0" x 4.5"
  • Package Weight
    7.5 lbs. (3.4 kg)
  • Motor
    Brushed
  • Rated Power of Motor
    0.48 kW
  • No Load Speed(s)
    9000 (± 10%) RPM
  • Speed Switch
    High/ Low
  • Line Feed?
    Auto
  • Single or Dual Line Feed?
    Dual
  • Trimmer Line Diameter
    .065"
  • Cutting Swath (Inches)
    13"
  • Telescoping Shaft?
    Yes
  • Shaft Length
    39.3" (99.8 cm)/ 47.6" (120.9 cm)
  • Attachment Capable?
    No
  • Rotating Edger Head?
    Yes
  • Compatible Extension Cord -25 Ft/ 7.62m
    14-gauge cord
  • Compatible Extension Cord -50 Ft/ 15.2m
    12-gauge cord
  • Estimated Assembly Time
    ≈15 minutes
  • Warranty
    3-Year Warranty

Manuals

FAQs

What is the difference between auto-feed and bump and feed string trimmers?
Auto-feed string trimmers use centrifugal force to release trimmer line. Each time the unit is activated, the spinning of the trimmer head exerts a force that unlocks the trimmer spool, allowing line to be released. A spring-loaded mechanism relocks the line after approximately 0.25” of line has been release. Therefore, every trigger pull will release line. Bump feed/ bump and feed string trimmers work with a similar mechanism, but the spool lock is manual disengaged by the user by “bumping” the trimmer head on the ground while the unit is in use. This mechanism provides operators with more control over how much line is used.
What attachments are compatible with my string trimmer?
For attachment capable string trimmers, the following brands are compatible: Poulan Pro, Ryobi-Expand-it and Trimmer plus. If you are unsure if you have an attachment capable string trimmer unit, please contact us at 1-888-90-WORKS
Why does my trimmer line keep breaking during use?
Trimmer line will break off during use which is a normal occurrence. In harsher terrain or when used to edge, the string trimmer's line will break off more often as it makes contact with hard surfaces. To reduce line breakage here are some tips: • Keep the underside of the trimmer head/guard area clean of debris. • Ensure that the cutting blade is clean/clear, and the blade is exposed and shard enough to trim the line. This will also help to reduce excessive line breakage. • Avoid direct contact with hard surface areas when using the string trimmer. • In thicker, denser, and longer grass, you may want to go slower. Listen to the sound of the string trimmer, if it reduces speeds, or slows down too much, back away from the grass and start again at a slower pace.
Can I remove the guard from my string trimmer?
No, string trimmers should never be operated without a guard. The guard is a safety feature and helps reduce debris such as grass clippings from being picked up and flung towards the user. It also has a cutting bar on it to prevent line from overextending and breaking off at large lengths. Operating without a guard will cause the string trimmer to work harder than it must and will reduce the life span of the motor. It will also void the warranty.
Why does my line keep unraveling?
Line unraveling can be caused by winding the spool line the wrong way or simply not winding it tight enough. Please make sure you follow the guide inside your owner’s manual thoroughly as this process may take some time to correctly achieve.
What does reduced gear mean for my string trimmer?
A string trimmer that has a reduced gear motor does not directly drive the trimmer head. Instead, the motor drives a larger gear that is attached to the trimmer head. This reduces the speed of rotation but increases the torque. It allows a smaller, lighter motor to produce extra torque and perform tasks more efficiently, while ensuring that the unit is easy to maneuver.
Does my unit come with trimmer line?
Yes, all Greenworks string trimmers come with spool and line that has already been installed in your unit.
Can I use a thicker diameter line than what is recommended?
No, we do not advise using a thicker diameter line than what is advised in your owner’s manual. The use of a thicker line may result in over working the motor and could potentially damage the motor resulting in shorter life span of the unit. This will also void your warranty.
Can I buy replacement line locally?
Yes, you can use any generic brand of trimmer line to rewind your existing spool. Please refer to your owner’s manual to ensure you purchase the correct diameter of line for your unit.
Can I change the original trimmer head?
No, we do not offer this feature currently. However, we do offer attachment capable string trimmer units that can be used with a variety of different attachments from the following brands: Poulan Pro, Ryobi Expand-It and Trimmer Plus.
Looking for a compatible part/accessories for this unit?
You can find the related parts and accessories on our parts finder by clicking here.

Product Videos

This corded trimmer offers powerful performance and lightweight design. Customers praised its ease of use, saying it's "light weight and powerful" and does "a beautiful job." However, some experienced issues with string advancement, handle stability, and cord compatibility. Several customers appreciated the affordability and battery-free operation.

Power (positive)Weight (positive)Assembly (positive)Trimmer (neutral)Handle (negative)
  • 5 stars: 3 (38%)
  • 4 stars: 1 (13%)
  • 3 stars: 0 (0%)
  • 2 stars: 1 (13%)
  • 1 star: 3 (38%)
2
254652116
null

null

2
225123535
Light weight and powerful

I love my trimmer it gets around all my plants and trees in no time when I need a clean border it does the job.

2
223576031
Stringline advancement terrible

I have on this for about 6 months and I have never been able to get this train to advance or to cut like it's supposed to. Even with the prewound spool I have to try to tear it apart. Which is really hard because it does not come off easy. You have to be a gorilla to be able to pinch the thing off

2
223398686
Have not gotten it yet!!!

Have not gotten it yet when are you going to ship it ???!!!9

2
221235273
can't find a cord to use it

This trimmer seems like a great product. It has all the features I wanted to replace a gas-powered mess of a tool. Unfortunately it requires a strange sort of two-pronged cord that is not included. I've hauled this thing to every hardware store in the county and they all say they've never encountered the kind of cord that I need. I contacted GreenWorks about recommending one that I could purchase but they have been unresponsive.

2
212306673
Sliding handle/poor string managment

The handle keeps sliding all over and the razor to cut the string is too dull that the strong gets so long it knots. Used twice and i am already out of string.

2
211812064
Super Easy To Use

I recently purchased the Greenworks 13 inch Corded String Trimmer and could not be more pleased with the purchase. This particular trimmer is so popular they were out of stock everywhere I tried. Luckily I was able to purchase it directly from the Greenworks web site and it arrived in slightly more than 24 hours. I was so nervous because I had never used any trimmer/weed eater before and I didn't want to get hurt. Assembly was a snap! As far as using it I asked my neighbor to show me how. It took five minutes and I was on my way to a beautifully trimmed lawn. Yeah!! Thanks Grenworks!!! I also own a Greenworks electric corded mower and love that too. So easy to use and it does a beautiful job.

2
211661309
I love the power it has

I bought this about a month or so ago and love how much power it has. I love that you do not have to charge a battery. It is lighter weight. It cost way less than other weed eaters and I would buy it again if I had to. Worth every penny!

AI Assistant
First Name*:
Last Name*:
Email: optional
Hello, how may I help you?
Disclaimer: Responses are generated by AI and may be inaccurate. Chats may be monitored, recorded, and stored by us and our vendors. By using this service, you agree to our Terms of Service and acknowledge our Privacy Policy.