Model#: GWKN20312

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Greenworks 20312 40V G-MAX Lithium-Ion DigiPro Brushless 16 in. Chainsaw Kit

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  • Due to federal regulations, this product can only be shipped within the continental US. Express delivery not available.

Product Overview


Important Notice: Lithium-Ion Item - Express Delivery option not available due to transportation regulations.
Become more efficient when working in your yard with the Greenworks 40V G-Max Lithium-Ion DigiPro Lawn Tool Series, the gas alternative solution you have been waiting on. The DigiPro has a brushless motor for more torque and superior cutting performance and also has an interchangeable battery platform that offer all the tools you need to complete your yard work without sacrificing performance or power.Greenworks 40V G-Max Cordless Lithium-Ion 16 in. DigiPro Chainsaw delivers the power and high performance you need to get your trimming done without the hassle of extension cords or heavy gas powered motors. Featuring a 16 in. steel bar and chain, automatic oiler, tool-less chain tensioning adjustment and a wrap around handle, this chainsaw was designed to make cutting a simple task. The translucent oil tank makes it easy to have a clear view of oil capacity to ensure the highest performance and durability. Whether it is pruning tree limbs or cutting down logs for your fireplace, this is the perfect chainsaw to have around the house to take care of all your trimming needs. Well balanced, clean and easy to transport, this Lithium-Ion battery chainsaw with the brushless motor is a great step forward as an alternative to gas powered chainsaws. The large hand guard protection and safety switch button offers an enhanced precaution feature for any accidental start ups and the electric start feature makes it easy-to-use without the hard-to-manage gas pull start.
  • Digital controlled brushless motor for more torque, longer run-time, quiet operation, and longer life
  • Brushless motor delivers up to 30% more torque for the greatest cutting performance
  • Brushless motor design offers up to 70% less vibration for user comfort while working
  • 16 in. bar and chain perfect for tackling the tough jobs
  • Automatic oiler applies oil to the bar and chain to ensure durability and extend the life of the chain
  • Electronic chain brake prevents from accidental kick-backs
  • Compatible with Greenworks GMAX 40V Li-Ion System for higher efficiency and longer run time with an assortment of tools to complete your yard work
  • Note: 40V G-MAX and 40V Lithium-Ion Batteries are not cross compatible.
  • 40V G-Max Cordless Lithium-Ion DigiPro Brushless 16 in. Chainsaw Kit - 20312
  • 40V G-MAX 4.0 Ah Lithium-Ion Battery
  • Charger
  • 16 in. Bar and Chain
  • Scabbard
  • Travel Bag
  • Owner's Manual
Compliance and Restrictions
warning: Cancer and Reproductive Harm --


Series: G-MAX
Cordless: Yes
Length: 16 in.
Weight: 10.36 lbs.
Amp Hour: 4 Ah
Bar Length: 16 in
Batteries Included: 1
Battery System: 40V G-MAX
Battery Type: Li-Ion
Battery Warranty: 2 Year
Bluetooth Compatibility: No
Case Included: Yes
Case Type: Bag
Chain Gauge: 0.43 in
Chain Pitch: 3/8 in
Charger Included: Yes
Handle Type: D
Motor Type: Brushless
Powered Tool Power Source: Electric - Cordless
Starter Type: Electric
Tool-less Chain Tensioning: Yes
Voltage: 40V
Wifi compatibility: No



4.7 / 5.0
45 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Yes, I would recommend this to a friend (12)
No, I would not recommend this to a friend (1)
Lightweight (8)
Easy To Use (4)
Ergonomic Design (4)
Powerful (4)
Heavy (1)
Short Run Time (if applicable) (1)
Best Uses
Frequent Use (3)
Small Projects (3)
Heavy Duty Requirements (1)
Large Projects (1)
Excellent value, user experience, and value
I bought the Greenwoods 40V chainsaw in early July 2019, after reading the positive reviews and given my customer experience with a number of their other 40V tools. This is an excellent chainsaw...excellent performance, user experience, and value. I highly recommend this chainsaw.
September 3, 2019
Originally posted at
This is a nice saw, but there is a bar oil issue
This saw has good balance, decent weight, and the battery does last fairly long, about 40 minutes on average of hard use so far. I have managed to overheat the battery and the tool shut off, so I pulled out my other saw to cut till the greeworks battery was cool enough to use again. I'm kinda confused that they don't seem to have any kind of cooling fan for the batteries, since it is possible to overheat them till the BMS shuts the battery down. The bar oil works great until you are done and don't drain the oil from the saw. If the saw sits at all with oil in it, the oil leaks out. I took the bar off to try and figure out what is going on, and I really don't see any reason why It would leak out. there is a rubber gasket on the green works saw to keep the oil from leaking, and its just plastic without a gasket on my other saw, yet my other saw has never leak a drop, and the green works saw will leak a whole tank out overnight. the dog teeth are metal and although not sharp out of the box, they can be sharpened with a file while on the saw for more grip on the logs to be cut. I'm not sure if it means anything coming from an engineering technician, but if the saw didn't leak, and the battery could keep from overheating, this would be a 5 star saw for the price and the features. now I'm wondering if I can mod the thing so it doesn't leak. thanks brain, I really don't have more time to dedicate to experimenting at the moment though.
July 11, 2019
Originally posted at
Great product.
I bought the 16 “ 40 volt chainsaw and I’m Very pleased with the saw. Works great, lots of cutting power.
June 29, 2019
Originally posted at
Does a great job
I purchased the 16" 40v on 08/01/2018 and have used it many times since that date. I had to replace the chain recently (cheaper than having it sharpened. The replacement was an easy off, easy on assembly. The saw cuts through wood and tree limbs with little or no effort. I have 7 other Greenworks tools I went with the bare bones unit (no battery or charger)
April 30, 2019
Originally posted at
Great for its size!
I purchased this saw a month ago & cut at least a cord or more of hardened oak with it. It doesn't have the same power as a 2 cycle gas engine but if your blade is sharp it does extremely well. Nice to just plug into to charger rather than fumble around obtaining fuel/oil. No hard start issues as the past. MAKE SURE TO USE SHARP BLADES & LET THE BLADE DO THE WORK! Keep the chain oil tank clean of debris! Oiler works great. All in all the perfect saw for the individual who trims up firewood or yard maintenance. Nice 4 year warranty for non commercial use. If you're doing heavy work I would suggest getting the 80 volt unit but if you have other 40 volt Greenworks products as I have the additional batteries give you extra cutting while the other battery charges. Even if you have the additional GW tools I suggest getting the entire kit rather than just the saw as I did because you get the extra battery & charger for a additional $40. A replacement battery costs around $100. A great tool that always works when you push the trigger. I highly recommend this saw. I haven't used it enough to give a 5 star on disability but it appears to be a solid saw with plenty of upside.
December 21, 2018
Originally posted at
My first chain saw
Received this saw as an early gift after wanting one for years. It was very easy to learn on. If you're like me and this is your first saw purchase, read the manual, wear safety gear, and it'll be good to you. I seem to wear out before the batteries do, so far. If you've read other reviews, you'll recall that the bar and chain oil does leak a little, so keep it stored appropriately to avoid staining your floor. (Only complaint is that I thought it was to include a carrying case. Mine did not, so I've been using a garbage bag instead.)
December 6, 2018
Originally posted at
Excellent saw
I purchased three of these G-Max 40V saws several years ago to thin and prune juniper and pine on grazing land. Was not sure if the battery saws would hold up to the demands of ranch work, but hold up they did and without even one major problem with any of the saws over hundreds of hours of use. When I first got these saws one old boy I had working for me scoffed at it, but now these are the go to saw for any job within it's capacity. All but the large gas saws are collecting a lot of dust these days.
Because of their light weight and ease of use, these saws became invaluable in steep canyons and rocky terrain. Three batteries per saw, a jug of oil and a file would keep my crew of three workers going all day.
November 12, 2018
Originally posted at
My second Greenworks saw
I bought this saw to have a lighter saw for use at home. I have a Greenworks 80V saw for farm use some distance away. Both saws are well worth the money.
I don't use chainsaws enough to be comfortable with them. An electric saw is simpler to operate and seems to me to be safer--less noise, no smoke, and you don't start the saw until you have it in position to make the cut. The batteries have all the capacity that I need and more. If you plan on doing extended saw work you may want a second battery.
October 20, 2018
Originally posted at
Convenient & No Fuel
Have had traditional chainsaws and wanted no fuel and less maintenance. Had this chainsaw for about 2 yrs and happy with it. I have 2 batteries and so far get the usage I need since I am out of my tree downing era. Now it's cutting logs into manageable shapes for lathe turning.
August 22, 2018
Originally posted at
Awesome chain saw
Got this chain saw a couple of years ago and it is the best saw that I have.It cuts very well and runs a very long time.Best chain saw run by a battery
August 22, 2018
Originally posted at

Questions & Answers

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Browse 15 questions Browse 15 questions and 15 answers
Will the same battery work with the 12 inch 40v chain saw and also the 40v hedge clipper?
Jim C on Jul 24, 2017
weight of 16 in saw/?
A shopper on Sep 17, 2017
BEST ANSWER: This saw weighs 7 lbs.
How do I get a replacement, saw chin, for Greenworks 20312 40V G-MAX 16 in. chain saw?
Terry M on May 29, 2017
BEST ANSWER: Please contact the manufacturer direct at 1-888-909-6757 for parts and accessories.
I can't get my battery to charge, so I can run my chain saw
Jean on May 20, 2016
BEST ANSWER: Please contact CPO customer care for more options. 866-577-0663
how do I get replacement, saw chin, for Greenworks 20312 40V g-max 16 in chainsaw?
Terry M on May 29, 2017
Weight of 12"chain saw?
A shopper on Mar 25, 2017
BEST ANSWER: 6.9 lbs is without batter. With battery it weighs 10.4 lbs with battery.
Will the chain oiler work in cold weather?
Fred on Apr 3, 2015
BEST ANSWER: A chain oiler will work in cold weather.
If I don’t like this cordless chainsaw what is your return policy and how much does it cost to ship it back?
A shopper on Mar 21, 2019
BEST ANSWER: The return window for new items is thirty-days. You would have to get the cost of the return shipping fees, from the carrier you decide to use for the return.
Is this a variable speed saw?
James S on Nov 4, 2017
BEST ANSWER: No, this saw does not offer variable speed.
How do I adjust the chain tension and how will I know if it is needed
slick on Jun 24, 2016
BEST ANSWER: There is a chain tension knob located on the side of the saw.


Greenworks Warranty


When looking for lawn tools, we know you’re thinking about quality. You’re looking for something that will get the job done and get you back to your weekend. That’s why Greenworks backs tools with a four-year warranty (1 year on Pressure Washers) we know our products will perform at the highest level and always be reliable.


Greenworks products are protected against all defects under normal use for a period of four years (90 days for commercial use) from the shipping date. Pressure Washers carry a 1 year warranty.

Reconditioned GreenWorks products are protected against all defects under normal use for a period of 30 Days from the shipping date.

Greenworks can opt to repair, replace or issue a refund for products that are determined to be defective, or that have been damaged during shipping. Proof of purchase is required. Replacement of products or parts subject to normal wear and tear is the responsibility of the customer. If Greenworks accepts a return under Warranty, you can return the defective or damaged product only after you call and receive a Return Authorization from Greenworks. You also will receive a refund for your original shipping charges, and GreenWorks will arrange and pay for your return shipping charges. Lithium-ion batteries carry a two-year warranty against defects in workmanship and materials. Sealed Lead Acid batteries carry a one-year warranty against defects in workmanship and materials. Batteries must be charged in accordance with the operator’s manuals directions and regulations in order to be valid. See owners manual for warranty details.