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Internet #309343431

Model #CS-400-16

Store SKU #1004287627

Store SO SKU #1004287627

16 in. 40.2 cc Gas 2-Stroke Cycle Chainsaw

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$undefined.00 /mo* suggested payments with months* financingApply Now
  • Pro-grade ECHO chainsaw CS-400 cuts up to 28" diameter logs
  • i-30 reduced-effort starting system makes start ups a breeze
  • View the ECHO Pro-Consumer Gas Chainsaws
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Product Overview

The gas powered ECHO chainsaw CS-400 is a rugged, professional-grade 16 in. chainsaw that cuts logs with up to a 32 in. Dia. This chainsaw's cutting power makes it great for cutting firewood. Packed with commercial-grade features for easy use and maintenance, the CS-400 includes a reduced-effort starting system and a 40.2 cc professional-grade, 2-stroke engine that delivers ample power for tough jobs. This built-to-last engine is also protected by a heavy-duty air filter and engine air pre-cleaner to protect against dust and dirt, so you can count on peak performance for years.
  • For questions about service and repair, please call Echo at 1-800-432-ECHO or reference the Service & Repair document
  • Use a 50:1 ratio of fuel to oil mix for 2-stroke cycle engines, recommend using only fresh gas with a minimum octane rating of 89 or higher (mid-grade to premium) at all times
  • 50:1 ratio equal 1 US Gal. 89 octane plus 2.6 fl. oz. ECHO PowerBlend oil or ECHO red armor oil
  • Gas powered chainsaw features a 40.2 cc professional-grade 2-stroke gas engine
  • Chainsaw comes with a 1-year commercial/5-year consumer warranty
  • Comes with 16 in. bar and chain provides reliable cutting performance
  • i-30 starting system with digital ignition delivers easy starting and smooth acceleration
  • Tool-less, easy access air filter
  • Heavy-duty air filter increases engine life
  • Side-access chain tensioner enables quick and easy adjustments
  • Automatic oiler keeps the chain lubricated for smooth operation
  • G-force engine air pre-cleaner maintains clean air supply to engine, helping protect against dust and debris

  • California residents

Additional Resources

From the Manufacturer

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Name16 in. 34.4 cc Gas 2-Stroke Engine Chainsaw18 in. 40.2 cc Gas 2-Stroke Cycle Chainsaw16 in. 40.2 cc Gas 2-Stroke Cycle Chainsaw16 in. 42 cc Gas Rear Handle Chainsaw
Save $30.00 (9%)
Bar Length (in.)16 in.18 in.16 in.16 in.
Included2 Cycle Oil,Chain,Scabbard,Scrench/Combination WrenchChain,Scabbard,Scrench/Combination WrenchChainChain,Scabbard
Power TypeGasGasGasGas
CA (CARB) CompliantCARB CompliantCARB CompliantCARB CompliantCARB Compliant
Chainsaw Bar SizeMediumMediumMediumMedium
Engine Displacement (cc)34.440.240.242
Product Weight (lb.)9.80 lb12.112.1 lb15.2 lb
FeaturesAntivibration,Automatic Chain Oiler,Bumper Spikes,Chain Brake,Chain Catcher,Electronic Ignition,Translucent Fuel TankAntivibration,Chain Brake,Tool-Less Chain TensioningAntivibration,Chain BrakeAntivibration,Chain Brake
Maximum Cut Diameter (in.)28323215.748
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Bar Length (in.)
16 in.
Chain Size
16 in.
Maximum Cut Diameter (in.)


CA (CARB) Compliant
CARB Compliant
Chain Pitch
3/8 in.
Chain Speed (mps)
Chainsaw Bar Size
Chainsaw Type
Hand Chainsaw
Color Family
Drive Links
Engine Cycles
2 Cycle
Engine Displacement (cc)
Engine Type
2 Cycle
Antivibration,Chain Brake
Filter Type
Felt Filter
Fuel Tank Capacity (oz.)
Handle Type
Rear Handle Chainsaw
Power Type
Product Weight (lb.)
12.1 lb
Torque Maximum (Nm)

Warranty / Certifications

Certifications and Listings
CARB Compliant,EPA Approved
Manufacturer Warranty
5-year consumer / 1-year commercial

Questions & Answers

Typical questions asked about products:

  • Is the product durable?
  • Is the product easy to use?
  • What are the dimensions of the product?

Customer Reviews

  • 4.3
    out of 1,091 reviews
  • 84%recommend this product
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Showing 1-10 of 1,091 reviews
Can't change saw blade
The saw blade on this model is almost impossible to replace due to poor design. There is a clamp that has to go around the clutch and not enough room to spread the clamp out without modifying the body of the unit. Maybe the lawn mower repair shop has a special tool for this, at the end user should be able to change the blade without difficulty. The instruction manual doesn't even try to explain how to do it, probably because they know it's not well built and wants you to take it to somebody every time. I saw another YouTube videos that other models by Echo were not designed this way.
    2 found this review helpful
    Great Chainsaw
    This is a great quality chainsaw. I used it for the first time today and went through two tanks of gas. It worked perfectly and starts on the first pull. I would highly recommend this chainsaw.
      • Recommended
      Very happy
      I have used several saws in my life. Some pretty big some small. This is a nice smaller/mid size saw. I have only ran a few tanks of fuel thru it at this time. But for what i was wanting and expecting i am very satisfied it starts very easy and has plenty of power for the size saw it is. I've cut some trees that took the entire 18 inch bar and it does a nice job. Hope it continues as is very satisfied
      • Verified Purchase
      • Recommended
      1 found this review helpful
      Used to cut down a black locust tree, it rocked!
      I bought this to take down a black locust tree and it was amazing! Cut perfectly and started right away after breaking in the motor.
        • Recommended
        1 found this review helpful
        Great little saw made in the USA!
        I own an echo cs-450p—a fantastic little saw. I use it to fell lodgepole pine for firewood. I also own an echo blower and a hedge trimmer. Both awesome tools. All are Reliable, built tuff, fairly priced, and all purchased from HD. So when i needed a small saw for use around a second home, this cs-400 was a no brainer. I needed to split some large diameter spruce bolts(16-18” in length)—too large to split with a splitting maul. So i used this to rip the bolts half thru then finished the task with the maul. This little saw never missed a tick! Until i hit a nail! Tuned up the chain and right back at it. This is a great little saw. Don’t be fooled. This thing is a beast. Fires every time. These narrow kerf saws are work horses—they cut like a hot knife thru butter. And this one is at the top of it’s class for function and economy. I will choose echo over the other brands any day for quality price ratio. Highly recommend.
          • Recommended
          2 found this review helpful
          Awesome Chainsaw
          I bought this saw to cut firewood this year and I am very impressed with the power and performance of this chainsaw. I have cut 2 cords of wood so far with no complaints. On cold starts the saw fires right up. I prime the saw with about 6 pushes and choke pulled out. I give it a good pull and right away it wants to start. Push the choke in pull and it fires right up. I have yet to feel fatigue from holding the saw and cutting firewood. I like that the saw doesn’t vibrate excessively and it isn’t heavy either. To tighten the chain and get yourself up and running is quick and easy. I would recommend this saw quickly to those needing a saw to do the job.
            • Recommended
            8 found this review helpful
            Have had this saw for a year
            First saw I’ve ever bought and I’ve cut down a lot of trees with it. Today i cut down a big pine. Biggest tree I’ve cut down so far. This saw is amazing. My dad has had only Stihl saws in the past but honestly the reliability of this saw is amazing. I didn’t run it for 4 months during the brutal heat and added fuel primed it and pulled the choke. 2nd pull turned over. Took choke off and off she goes. You cant see it in my picture but i had to fall 2 medium oaks and 2 sweetgums one which was a sever leaner and the pine. I still have the original chain on it and its been sharpened about 20 times. Well chain came off when I cut this tree so now I’ll have to get a chain but honestly surprised its lasted this long
              • Recommended
              4 found this review helpful
              Great saw for the average homeowner.
              So far so good. I've only had it for 2 days but I'm loving the quality of the saw. I had someone cut down a tree and told them I'd cut up what they brought down to save myself a lot of money versus having them do it. I'm not sure what type of tree it is, someone told me oak but another told me maple. The setup was easy. I only had to tighten the chain some. I followed the instructions on initial startup and it started right up. I made sure to adjust the chain tension after running it for 15 minutes because I read they stretch when new. I had to do this probably 3 or 4 times until it seemed the chain tensioner was no longer needing adjustment. The guys were using $700 Stihl saws and there was definitely a difference in power but not so much that I'd spend the extra $400 for one. If I did it for a living I might consider it but like I said, this saw wasn't too far behind theirs. They even said they'll get one as a backup or for smaller jobs. I've included pictures showing what I cut with this saw. I kind of wish I'd sprang for the 20" bar since some of the logs were beyond the rated capabilities of the CS-400. But, I made it work. It only bogged down a few times. That's not the saws fault since I was pushing it. I would definitely recommend this chainsaw!
                • Recommended
                9 found this review helpful
                This chainsaw was bought to replace a 15 year old Echo CS 400 which saw very heavy usage and I wa...
                This chainsaw was bought to replace a 15 year old Echo CS 400 which saw very heavy usage and I was very pleased with. The new CS 400 shares all the same features I enjoyed about the older one and performed great right out of the box! I received it two days after ordering it which was fantastic! It was double boxed and well protected. I have watched many friends struggle with their chainsaws and was always pleased at how reliable the CS 400 was. As a footnote, after spending about $80 to rebuild the carburetor and service a few wear items, my old CS 400 is back up and running as good as new!
                • Verified Purchase
                • Recommended
                10 found this review helpful
                With the addition of a Home Depot Boom Lift rental this took down an Ash tree in 5 hours and had ...
                With the addition of a Home Depot Boom Lift rental this took down an Ash tree in 5 hours and had the tree cut into pieces with only 4 hours of work the next morning.
                • Verified Purchase
                • Recommended
                5 found this review helpful
                Showing 1-10 of 1,091 reviews