ECHO 20 in. 45 cc Gas Chainsaw-CS-450-20 - The Home Depot
Message to Our Customers


Model # CS-450-20

Internet # 202524914

Store SKU # 536583

20 in. 45 cc Gas Chainsaw

ECHO 20 in. 45 cc Gas Chainsaw

This item has been discontinued.
The Home Depot no longer carries this specific product.

$374.00 / each


Model # CS-450-20

Internet # 202524914

Store SKU # 536583

The Echo 20 in. Gas 45 cc Chainsaw features a computer-controlled engine ignition timing system to help ensure cutting efficiency. The 45 cc engine is designed to provide ample power during use, and the saw uses an automotive-style air filter and an engine air pre-cleaner to help extend the engine's lifespan.

  • 20 in. bar and 20 in. chain are suitable for a variety of commercial and residential applications
  • Professional-grade 2-stroke, 45 cc engine for powerful performance
  • Digital ignition is designed to automatically adjust engine timing for cutting efficiency
  • Automotive style air filter and engine air pre-cleaner to help ensure a long engine life
  • Certified with the highest EPA engine durability rating
  • Inertia-type safety chain brake to help ensure safety
  • Automatic, adjustable, clutch-driven oiler for convenience
  • Includes operator's manual and engine oil for ease of use
  • Home Depot Protection Plan:

    Home Depot Protection Plan

Info & Guides

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Assembled Depth (in.) 
15.7 in 
Assembled Height (in.) 
10.9 in 
Assembled Width (in.) 
9.9 in 
Bar Length (in.) 
Chain size 
20 in. 
Maximum cut diameter (in.) 
Product Height (in.) 
Product Length (in.) 
Product Width (in.) 
Antivibration handle 
CA (CARB) Compliant 
CARB Compliant 
Case Included 
Chain brake 
Chain tension adjustment 
Chainsaw Type 
Hand Chainsaw 
Engine Displacement (cc) 
Engine Type 
Fuel tank capacity (oz.) 
Product Weight (lb.) 
11.2 lb 
Recommended oil 
ECHO Power Blend 2-Stroke Oil and ECHO Premium Bar and Chain Oil 
Translucent fuel tank 
Warranty / Certifications
Certifications and Listings 
4-UL Certified 
Manufacturer Warranty 
5 year consumer / 1 year commercial 


Rated 4.7 out of 5 by 34 reviewers.
Rated 5.0 out of 5.0 by Great saw I bought this saw after experiencing poor quality and support from Stihl. This Echo has lots of power, starts easily and warranty is much better. Appears to be well built. Very satisfied with my purchase. April 22, 2015
Rated 5.0 out of 5.0 by Saw Ease of operations, quick starts, powerful, handles the jobs I have worked on. April 24, 2015
Rated 5.0 out of 5.0 by Great saw! Easy starting, powerful, uses the same 50:1 gas oil mix as my Echo backpack blower so one less gas can needed. The saw has side cover chain tensioning. My old saw had a front tensioning screw and I don't miss digging through sawdust and chain oil to get at it. It is heavier than my old saw, but I jumped from a 16" to a 20" so that is to be expected. Very good warranty! I wouldn't hesitate to buy other Echo products. June 4, 2011
Rated 5.0 out of 5.0 by This Chainsaw is a BEAST... This is my second season with the saw, as I bought it last year. I have used it extensively since then. I regularly cut 20+ inch oak rounds without any complaints. The saw is a bit heavy, but the makes up for its heft with cutting power. It's very easy to start and operate. The saw is an absolute blast to use! It's on the expensive side, but you definitely get your money's worth. My only criticisms are: 1. Price is a bit high 2. Case or scabbard are not included These complaints are minor IMO, and I would not hesitate to buy this saw again or recommend it to a friend. December 8, 2013
Rated 5.0 out of 5.0 by best chainsaw under 400 Easy to start, cuts live oak like it is butter, fun to use...only problem I have is the oil, it drips chain oil when stored upright. I tried storing it on its side, still drips, tried the other side..there is always a little oil under the chain brake, so now I am looking for a case November 24, 2013
Rated 5.0 out of 5.0 by Starts every time This chain saw has all the power for my needs; I take down trees with up to about 16 inch diameter, and my Echo takes care of them just fine. The safety features are useful for the average joe like me. I'm going to spend some time talking about startability, since that's been my main issue with home chain saws over the years. I had a little 16 inch Poulan chain saw for years and I always had an awful time getting it started. Finally I gave up, bought this Echo chain saw and have never looked back. I've had it for four years and I yank once with the choke on, then squeeze the trigger, and it always starts up on the next yank. An important caveat, though. While I was shopping for chain saw, I got some advice that gas station gas with the ethanol additive is bad for two cycle engines, and that it will eventually varnish them, causing them to have starting issues, With the Echo, I always use the Trufuel 50:1 pre-mix gas that has no additives. I strongly suggest that you use this fuel on all your two-cycle engines. I never have starting problems on any of them anymore. It's entirely possible that even my little Poulan would have started well if it had only seen non-ethanol gas. I can't say that for sure, but I *can* say that this Echo, with Trufuel, starts every time, even after months of non-use. April 21, 2013
Rated 5.0 out of 5.0 by Chain saw This is my first review. I am so impressed with this chainsaw. Had it for about month and use it for projects around the house. Starts up every time and cuts wood like butter. Use Trufuel 50:1 mix to stay away from the ethanol at gas pumps. September 2, 2013
Rated 5.0 out of 5.0 by oh yeah..I love ECHO brand equipment!! I bought this this unit to replace my 33 year old craftsman which served me well and still runs great. But this baby will cut through the greenest of oak limbs with NO PROBLEMS. The first logs I cut were 12" oak and I only ran it half trottle and it never bogged a bit. October 28, 2013
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