The 4 Most Common Greenworks Lawn Mowers Problems

There are a lot of GreenWorks lawn mowers sold on Amazon or any other Online Retailer. That means that sometimes there will be GreenWorks lawn mowers problems since this is such a popular mower. The popularity also means that more than one person has likely faced the mower issue that you are up against. That is very helpful, like a tribe helping each other in their own ways. The internet may have a dark side, but the benefits are numerous thanks to the collective “brain” that can solve some issues, whether they are lawn mower related or not.

GreenWorks lawn mowers have some of the best reviews on Amazon when it comes to electric mowers. These machines have pleased everyone from accountants mowing their own lawns to teenagers trying to make some extra cash for the movies. Simple machines are easier to work on and that is a staple of this company’s design process.


Greenworks Lawn Mowers Are Different!

GreenWorks lawn mower problems are a bit different from the gas machines we talk about frequently. There’s no spark plug to worry about. No gas to get old and gum up the system. Electric mowers have different issues. These issues can be troublesome since electric mowers are fairly new on the scene when it comes to mainstream use. Let’s have a look at some mechanical problems that are specific to GreenWorks lawn mowers.



Nº 1 of the Most Common Greenworks Lawn Mowers Problems

One very common problem on some of these models has to do with the cable that controls an automatic shut off. It runs from the handle to the engine. Many users report this cable being too loose and as they use the mower a few times the cable gets even looser. This issue prevents the mower from starting up as it should. There is a fix for this problem if you are up to the task. Check the cable to see if it is too loose. Slack in the cable prevents it from doing it’s job, namely protecting the user. Well, it does protect the user since you can’t get hurt with a mower that won’t start! You need to take the slack out of the cable. You can do this with a pair of pliers. Just make a bend in the cable carefully to remove any slack. This will make the cable do it’s job. Cables have always been a headache on mowers. You can adjust them, but it seems like there should be a better system that does not involve adjusting metal wires.



The Auto Throtting

Another small issue with GreenWorks lawn mowers is the auto throttling. This feature sounds like a good idea….until you lose power in thick grass which bogs down the machine. When mowing normal or thinner grass, the mower will idle down a bit. This saves power, but once it hits the thicker grass it has to ramp up for a few feet to get going full throttle to handle the tougher areas of your lawn. If your lawn grows at exactly the same pace then this is not an issue, but that is the exception and not the rule when it comes to turf.



Issue Nº 3: Unsharp Blades

Most of the blades that come with GreenWorks mowers are not super sharp. By the way, this is the case for many manufacturers. I don’t see why they can’t trust us with sharp blades on a brand new machine. I have had to sharpen blades on a brand new mower before ever using it once! I’m not sure if these manufacturers are just playing a prank on us or it is a safety thing. Whatever it is, I just don’t get it.



Last One: Battery Power

You may find your mower battery lasts as it should, but there seems to be many owners that report batteries that don’t last long enough. If you have this issue, it’s best to contact the manufacturer as soon as possible. A weak battery right from the start will not get better on its own!


Last Comment

I hope you don´t get me wrong here: I think Greenworks lawn mowers are very good mowers, but like any branch, these machines too have some little issues. I wanted to state out the most common ones that normally nobody talks about, but this doesn´t mean that Greenworks make bad machines. In fact many of their models are high rated in my overall TOP 5 Best Walk Behind Lawn Mowers Comparison Test as in general they are awesome mowers.

Nevertheless, once in a while your lawn mower might suffer from one of these issues. What do you think of the mentioned Greenworks lawn mowers problems? Have you had good luck with your mower or has yours been a pain in the grass?

As Always, happy Mowing!


  1. Reply
    Karen April 13, 2015 at 5:02 pm

    thanx for the heads-up on those issues. Was looking at those mowers & debating wether to get one or not. Still haven’t decided.

    • Reply
      billmartin April 13, 2015 at 5:25 pm

      Hi Karen, please note that all mowers have their issues. Greenworks is a great branch, but like any other, some mowers show some issues. That is why not all Greenworks mowers make it into my Top 5:(
      Please, allow me to help you with your buying decision. First of all, you need to look at your yard size and once checked if an electric mower is suitable for your lawn, read all you can on electric lawn mowers on this page. Here I will explain the most important pros and cons of electric mowers and this way you can decide wether you want to go for a corded or cordless lawn mower. After that, check out my TOP 5 reviews section in the top menu or at the comparison chart to select your new mower. I hope this helps. If you still have any questions left, leave me a message and I will do my very best to assist you with further advice. Happy Mowing!

  2. Reply
    Teresa June 14, 2015 at 1:54 am

    Where can I have my greenworks lawn mower repaired?

    • Reply
      billmartin June 14, 2015 at 4:43 pm

      When did you buy your Greenwork mower Teresa? They do come with a 4-years full warranty, so check your date of purchase! If you want to consult the Greenworks Customer Support to know the nearest dealer, you can either call them at 1.888.909.6757 or send an email to I hope this helps! Good luck!

  3. Reply
    Andrew_M_Garland July 4, 2015 at 3:40 am

    Issue Nº 3: Unsharp Blades

    I unpacked my GreenWorks 25022 12 Amp Corded 20-Inch Lawn Mower, carefully tipped it over, and very carefully examined the blade. I wanted to be sure that it was attached tightly and was in good shape. I very carefully viewed and touched the blade ends where they are supposed to be sharp.

    Amazing. The blades have a 25 degree bevel (my quick estimate) at the ends, but these are not sharp at all. The blade ends have the same enamel coating as the blade body. Never sharpened, no bare metal showing through the enamel.

    If Greenworks wants to do this for my safety, then why is this safer than forcing me to start by sharpening the blade? Without notice of this fact, I might have happily tried to cut my grass with a dull bar of metal. I assume this would shred the grass rather than cut it, and would put a larger load on the motor than intended.

    I suppose every mower owner needs a vice, file, and 15mm wrench, eventually. A little warning would have been nice.

    • Reply
      billmartin July 5, 2015 at 10:59 am

      Hi Andrew, as I pointed out in my article, GreenWorks doesn’t deliver the equipment with optimum sharp blades supposedly because of the safety of the customer. This is a bit odd as the grass has to be mowed with really sharp knives otherwise it will be plucked out instead of cut. But, I think it may have to do with their responsibility. Imagine that you cut your fingers when unpacking the lawnmower…. Many would sew Greenworks trying to get some kind of financial compensation. If you cut yourself in the finger while knife sharpening, you only have yourself to blaim.
      I would say, try it out and leave me a comment about how it went. You could also have a look at one of my posts about “How to sharpen mower blades”. Good luck!

  4. Reply
    Andrew_M_Garland July 5, 2015 at 1:18 am

    I have looked around on the web. Some people shrpen their blades knife sharp, others butterknife sharp. The supplied blade may be sharp enough. I’ll try it as-is and see what happens.

    • Reply
      Andrew_M_Garland July 25, 2015 at 4:49 am

      The unsharpened blade was not great. Some of the grass layed over, and the ends were mostly frayed. So, I sharpened the blade with a 10″ flat file. The mower definitely works better with a sharp blade.

      Removed the blade: Tipped over the mower. Blocked the blade with a wood block secured by a vice grip pliers. Removed the center nut with a 3/4″ ratchet handle 7.5″ long (for good leverage) and a 5/8″ socket. The nut is actually 15mm (4.72/8ths), but the 5/8″ did it, with a layer of paper towel over the nut for cushioning.

      Clamped the blade across the corner of a work table with a metal c-clamp. About 15 strokes of the file produced a steak-knife edge, about 2″ along each outer edge. Razor sharp is not needed.
      Reattached the blade to the mower. The ratchet handle provides leverage to get a tight fit.

      • Reply
        billmartin July 27, 2015 at 5:36 am

        Glad to hear everything worked out fine for you Andrew. Good job!

    • Reply
      billmartin July 5, 2015 at 11:01 am

      Yeah, sure! Let me know how it went:)

  5. Reply
    Jack Faith July 11, 2015 at 1:45 pm

    Green Works Electric mower will not shut of without upplugging.

  6. Reply
    Rick July 15, 2015 at 7:27 pm

    I have a Greenworks 25222 purchased in 2013. Worked great until 4th mowing of 3rd year. Charged it, showed usual 3 green lights but only operated 5 minutes, still showed 3 green lights!
    Recharged, same results, took the battery to battery and bulb stored, it showed 76% charge. They told me that I should charge it all winter (off season) every two months inside, without letting it get cold. That would have been good information to include in the owners manual. During investigation I found that the 25222 mower was discontinued before 2013. Also the only battery I can purchase is from Greenworks directly which is $150.00 which is half of what I paid for the mower. What do I do next?

    • Reply
      Bill Martin May 20, 2016 at 9:41 am

      I would guess the charger is the culprit. It would be great to have another charger available to test to see if it’s the batteries.

    • Reply
      billmartin September 8, 2015 at 10:04 am

      Unfortunately many cordless electric mowers show serious problems due to battery issues. For this reason, I prefer corded electric mowers as they give much less trouble and keep their cutting power during mowing. I rather handle a cord then an useless mower due to battery issues!

  7. Reply
    Tim Bereika August 17, 2015 at 10:57 pm

    We purchased a Green Works twin force GMAX mower this past April and love how it performs. However, we’ve had major issues with the batteries and chargers. The first charger failed after only one use and Green Works quickly replaced it. Now, the 4 amp battery will not charge at all leaving us with a tiny 2 amp battery that lasts about 15-20 minutes. I haven’t reached out to Green Works yet…I’m sure they’ll take car of it, but will this be a re-occurring problem? Again, love the mower, but extremely frustrated with batteries and charger.

    • Reply
      billmartin August 21, 2015 at 9:59 am

      Hi Tim, Do you keep your batteries fully loaded after usage? Many people just use the mower and then put it in their sheds afterwards. But, the batteries in cordless mowers need to be fully loaded when stored.I recommend reading the information on my page about cordless mowers and the different battery types.

  8. Reply
    Roger Polcyn November 30, 2015 at 6:54 pm

    Have a strange problem with my Greenworks self propelled mower (25272). I can’t remove the isolator key. Any idea why this would happen?

    • Reply
      Bill Martin May 20, 2016 at 10:35 am

      No idea my friend, maybe you have inserted it the wrong way the first time and now it is blocked?

  9. Reply
    Clint January 22, 2016 at 11:09 pm

    I’ve had the twin force GMAX for almost two years, and mostly happy with it. About a year in, it died in the middle of mowing, so I took to YouTube and discovered that the power board sometimes fails. So, I ordered a new one (like $4) and replaced it myself…which fixed it.

    A few months later, the same thing happens. I assume it’s the same issue, however a new power board wasn’t the problem. After removing the cover, and trying to start it, it worked. I fiddled with some cables, and discovered that there’s a short in the cable that leads from the circuit Key to the switch. I jiggle it, and it turns on (or dies). However, that part is not in the manual’s part list. 🙁

    Hopefully, this helps others in troubleshooting. I’ll be on the phone with GW next week (currently too late on a Friday to call).

    • Reply
      billmartin April 1, 2016 at 11:17 am

      Sorry to hear this Clint. Were you able to fix the issue?

  10. Reply
    Mike Frey February 14, 2016 at 1:19 am

    I have a 20″ Greenworks corded electric that blows the fuse on my house every time I try to start it. I hit a sidwalk that bend the blade, and it seemed like it blew the fuse on th mower. I took it to the local place that supports the warranty but was told it would be $45 to diagnose the problem and probably $85 to replace the motor. Greenworks said it was probably my fault and they wouldn’t cover the repair..The whole mower cost me $150 new. I tried to remove the top of the cover but can’t find out how.
    Any suggestions? are there fuses on these?

    • Reply
      Bill Martin May 20, 2016 at 10:25 am

      I suggest you check the instruction manual to see if you use the correct extension cord. An incorrect one might blow your fuses. You might also want to call their free helpline at 1 855 345 3934 as it is not normal behaviour and it should be fully covered by their guarantee. Good luck and let me know if you got the problem solved.

      • Reply
        Alex May 26, 2016 at 11:01 am

        If you are blowing a fuse it means you have an unsafe condition. You should never keep re-setting a blown fuse multiple times, without finding out what the problem is and rectifying it. Re-powering a faulty electrical device could prove to be fatal.

  11. Reply
    Dennis March 27, 2016 at 9:21 pm

    My 21″ GreenWorks mower just stopped running while mowing and it will not start again. Bought it used and have loved its operation but I don’t know what the problem may be?

    • Reply
      Bill Martin May 20, 2016 at 9:53 am

      Dennis, Could you please indicate your Greenworks model? I cannot help you if I don’t know which model you use. Thanks.

  12. Reply
    David May 7, 2016 at 12:57 am

    We have a green works twin force g max 40v lithium and unfortunately our charger does not want to charge the batteries. Do I need a new charger?

    • Reply
      Bill Martin May 20, 2016 at 10:21 am

      How long ago did you purchase the mower? Greenworks offers a 2-years warranty on its Lithium batteries and charger. You can call their free helpline at: 1 855 345 3934. Good luck!

    • Reply
      Bill Martin May 7, 2016 at 8:53 am

      Dear David, how long ago did you purchase your mower? Greenworks Lithium-iOn batteries carry a 2-year against defects in workmanship and materials. Sealed Lead Acid batteries carry a one-year warranty against defects in workmanship and materials. I am not sure about the charger itself, but I recommend you to contact their Customer Service at 1-888-90-WORKS. Good Luck!

  13. Reply
    BUTTCHIN BILLYGOAT May 10, 2016 at 3:16 pm

    This should be on the list:

    Eventually after a year, the lawn mower will shut off and you will need to restart the power by resetting your breaker. In this case, the rectifier needs to be replaced.
    It’s a fairly easy fix and YouTube has videos on replacing it.

    I believe the Greenworks mowers are also sensitive to overheating depending on the extension cord you use.

  14. Reply
    Zequek Estrada May 25, 2016 at 1:23 am

    I’ve never heard of Greenworks lawn mowers before. The common problems that happen don’t sound too bad. One of the reasons I’m grateful for the internet is that it’s easy to find advice like this.

    • Reply
      Bill Martin May 25, 2016 at 6:10 am

      Glad you found the article helpful. Take care!

  15. Reply
    Dan Roberts June 2, 2016 at 2:52 pm

    How important is the resistor on the ground wire from the key connection to the battery connection , it has no continuity. thanks

    • Reply
      Bill Martin June 4, 2016 at 9:41 am

      Hi Dan, I am not sure I understand what you are trying to say with continuity. Could you please explain what you mean? Thanks.

  16. Reply
    Doug June 7, 2016 at 4:39 pm

    I’m in the 4th 5th year of using a 19″ 40V GMax 25223 mower. We have a large corner lot, at least 2 charges on both batteries to mow. Usually start with the small battery, run it down. I find it best to let the small battery cool for a few minutes while I drink a little tea, then put it in the charger. Mow till the large battery runs down. By then the small battery is just about charged. When the small battery is ready swap out batteries and mow till the small battery is finished. Take a snack / lunch break and let the big battery finish recharging. Problems; the battery has got hot enough to shut off. Stopped mowing for a few minutes and everything cooled down and was okay. Only happened maybe twice. The little battery doesn’t like to charge when hot fresh out of the mower, shows as fully charged. That’s why I wait 5-10 minutes before putting on charge. It seems to recharge faster that way. Deals; found Craftsman battery being closed out after Sears discontinued their line of that 40V tool line.

  17. Reply
    Dorman W Lee June 15, 2016 at 2:39 am

    Can you give me a number in Texas to call for battery problems.

    • Reply
      Bill Martin June 16, 2016 at 8:49 am

      Hi Dorman, unfortunately I get so many requests to answer technical questions on the phone that is became too time consuming for me to attend all of you well. That is why I do not take phone calls any more. I hope you understand. However, I do try to answer to comments on my web, so please feel free to let me know what´s wrong with your battery or check my page about cordless mowers and scroll down to the battery section to read what I have been written about battery life, power density, etc.

  18. Reply
    jerry wasylynchuk June 24, 2016 at 2:09 am

    Hi Bill, the battery is indicating full charge but the motor after running for 15 minutes starts to bog down, sounds like it is binding. The lawn mower is 4 years old, we buy a new battery every 2 years, could it be a motor problem and how can this be fixed? Thanks, Jerry.

    • Reply
      Bill Martin June 24, 2016 at 2:08 pm

      Hmmmm, if the motor loses power after mowing a while, I guess the problem still can be the batteries even if you have changed them every two years. Here´s a great article on batteries that will come in handly to maintain its longevety. I hope this helps. Warm regards, Bill

  19. Reply
    Ray July 8, 2016 at 4:02 pm

    Hey Bill,
    Hope you can help with a problem not addressed in your interesting article. (Fortunately my Greenworks mower doesn’t have any of the problems you described.)
    In order to thoroughly clean my 3-year old Greenworks Model 25213 (21″ corded) I want to remove the motor cover. However, although I can loosen the 6 screws they will not withdraw from the nuts on the underside of the deck. I can access each of the nuts, and keep each stationary, as I turn the screws counter-clockwise but the screws do not come up. Any ideas how to get these screws out?
    Thanks! Ray

    • Reply
      Bill Martin September 2, 2016 at 10:18 am

      I am afraid those are “sealed” screws.

  20. Reply
    Luke July 17, 2016 at 10:42 pm

    I have the 20 in. duel battery Greenworks mower. Is it OK to run the mower with only one battery? Can I begin with both batteries and then when the larger battery runs down, take it out – charge it – run with only the smaller battery until it runs down and then bring the larger battery back?

  21. Reply
    Joseph Banken July 21, 2016 at 4:43 am

    Will you please post information about sharpening mover blades for the Greenworks mowers? I just purchased my Greenworks mower, and my blades seem pretty dull just after 3 mowings. I am not confident about doing this myself, but with a little direction may be able to do ti. Most professionals who know how to do this opt for the bigger jobs. Thanks in advance.

  22. Reply
    Chris August 2, 2016 at 1:13 am

    Just bought dual blade model 25282 on my 3rd time using it it quit half way I push and hold the start button pull the bail and I can hear a low winding sound for couple seconds and then nothing Check both batteries and they are fully charge

  23. Reply
    Eric LeVasseur August 23, 2016 at 12:20 pm

    I hit mistakenly hit a large branch with my Greenworks electric lawn mower. The mower shut off…and ever since then, the sound of the machine is much different. It’s got a lower sound to it…almost a wobble sound too…and the battery doesn’t seem to last anywhere near as along. Any ideas on a fix?

  24. Reply
    Crash September 1, 2016 at 5:27 pm

    Auto Throtting

    Does anyone know a way to set the throttle at full open and leave it there? I’m not concerned about battery life.

    Thank you!

  25. Reply
    Bernadette Chasteen September 2, 2016 at 5:02 pm

    “We don’t work on those”, said the mechanic. “I know, but could you please just help me remove the stuck screws so I can take the cover off?” I had read this and knew about the common problem with my Greenworks mower. The cable to release the safety (to allow it to start) gets loose and you can fix it by simply bending a kink in the cable. He saw that I was right, bent the kink and fixed the problem. I think he was as pleased as I was. Girl powered by access to information wins. Thank you!

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