Summary:
Very Satisfied with the purchase...would make it again...Darn reliable saw...takes and keeps on Tickin!

Strengths:
Good Balance, Fast Handling, Cuts nicely.

Weaknesses:
I would like to see more accessories for the saw.

Summary:
Great saw, just one thing the engineers should fix.

Strengths:
Cutting speed, light weight, low vibration

Weaknesses:
Possible filter hold down cap vibrating loose and hold down bolt cutting brass threads in the hold down cap into tiny bits. Bits suck into engine. Filter cap needs a longer hold down bolt with a secure nut on top the cap or something. Dealer provided new parts, saying Echo felt the particles were not sucked into the engine. My reply was that the particles were scattered inside the filter area. How could some have not went through the engine? I have used two tanks of fuel and it still runs and cuts fine. But the filter cap vibrated loose in that length of time. The dealer had tightened the filter cap.

Summary:
Can't go wrong with this saw if you're looking for a reliable, fast limbing saw.

Strengths:
Reliable, well balanced, fast handling limbing saw with 16" B&C, good anti-vibe system, with nice power levels. One of the best handling saws out there in my opinion. Has never failed to start.

Weaknesses:
More accessories from Echo would be nice.

Summary:
Best bang for the buck out there.

Strengths:
I own 14 saws, Stihl ,Husky, Echo ,Solo, Dolmar and a Cub Cadet (Efco) This is my favorite , it's light , handles nice runs like a top and has torque that won't quit for a 50cc saw.

Weaknesses:
none

Summary:
Ive used Echo saws for 23 years without any problems what so ever. You wont use anything else after owning one!

Strengths:
Its an Echo, what more do I need to say?

Weaknesses:
None

Summary:
I ran my Echo 452VL for nearly 30 years. It's still running fine, so hopefuly this bodes well for the 520. Hope I last 30 yrs more.

Strengths:
Lighter, more powerful and quieter than my previous saw.

Weaknesses:
I don't like the needle valve limiters. However I understand they can be removed if need be. They have been no problem thus far.

Summary:
awesome

Strengths:
great reliability - so easy to crank

Weaknesses:
n/a

Summary:
great saw, a lot more power for the money and a true prof. grade saw.

Strengths:
strong saw,plenty of power. I own a sthil ms 361,older echo 440 evl, and a stihl 440.This saw by far is one of the most reliable and economical to buy and run thus far.I only cut about 10 cord a year but soo far soo good.

Weaknesses:
none yet .

Summary:
I'm going with a Stihl MS 660 next. That should pull a 20-32" bar properly. I can't express how disappointed I am with the power of this saw. While the build quality seems good, it just doesn't cut the mustard. I've been using saws for over 20 years and I just can't say this is worth the $400.00 I spent on it. It should be a $200.00 saw.

Strengths:
Easy to start. Idles without stalling.

Weaknesses:
Low power for a 50cc saw. This saw can barely pull a 20" bar. In fact it needs to be nursed through a 12" log! Does not seem to come into it's peak powerband very often. I had a cheap Homelite that cut wood just as fast for 1/3rd the price. I'm going to try a 16" bar on it, that's what it should be sold with. Maybe with carb/exhaust mods it will work right, but a new saw sold as a pro-model should perform like one!

Summary:
I usually begin with the echo and after a sort time, pick up my ancient Mc 610 or my old poulan 2300. This saw has been back to the dealer several times, once for a new carb. It has yet to perform as reliably as either of my old saws.

Strengths:
Haven't really noted any.

Weaknesses:
Poor and annoying cold start. Inconsistent power. Bigger saws in same range available for less money.

Summary:
Cuts great, power and torque, light and handle nice, always runs

Strengths:
When tuned right this saw will cut just as fast as some 60cc saws, built good , runs good

Weaknesses:
None, unless you don't adjust the carb right.

Summary:
for a sopposed high performance saw it dosnt cut well i have a 30 year old shindowa 520 tiny saw that will out cut it rated with less than have the horse power and still starts after 30 years on the first pull and is magnisum not plastic pron to cracking

Strengths:
light weight

Weaknesses:
no power cheap clutch

Summary:
Great saw

Strengths:
Power, light wieght, handleing, never breaks down

Weaknesses:
None

Summary:
Great saw.

Strengths:
easy to start, good power for a modern saw, no smoke and quite for a chainsaw. Echo warrenty is hard to beat. 5 years.

Weaknesses:
chain brake was partially stuck and I had to take apart to free it. Cuts great now, and the brake still works, just doesnt stick. It is not an old blue homelite xl-101 but no one makes a saw with such great power to weight ratio as the 50 year old blue homelites anymore.

Summary:
Overall construction appears good, would recommend this saw to anyone short of a serious logger. This saw handles best with an 18" or even a 16" bar, ditch the saftey chain for a full chisel chain. If you want to see the saw's potential I'd suggest a Muffler Mod which REALLY brings this saw to life (don't forget to richen up the carb after reducing the muffler restriction).

Strengths:
Light Weight and very dependable

Weaknesses:
Not as much raw power in stock form as some other pro type saws but this is probably the trade off for long term durabilty (higher compression = more power vs. lower compression = longer life).

Summary:
One of the best 50cc saws out there for the money. I have two CS-510's and one CS-520. I heat my shop and house with firewood, and they are my favorite saws for limbing and cutting up small logs.

Strengths:
Excellent power for 50cc. In timed cuts this saw cuts dead even with my Husqvarna 55. Very efficient. They will cut a LOT of wood on a tank of fuel.

Weaknesses:
Very muffler resticted. Opening up the muffler slightly finds a LOT of additional power from this saw. The carburetor as delivered is WAY too lean, and not within the range of the limiter caps. Once they were removed, I was able to set the carburetor correctly which made the saw run much better everyplace. The safety chain they show up with is JUNK. Put a real chain on it and it will cut twice as fast!

Summary:
great

Strengths:
great saw i have had this saw over 10yrs still starts with 2 or 3 pulls

Weaknesses:
none

Summary:
I would recommend this saw to any one.

Strengths:
good power, smooth operation, I have several friends that have other saws and after using mine they went and bought one. I had a 60+ cotton wood fall on the saw it trashed the bar but the saw would still start and run. It gave me some problems after the but the factory fixed her right up. good weight on this one can use it all day.

Weaknesses:
none

Summary:
As mentioned above the last 3 people the used this saw are looking to buy one. 2 own Stihl pro saws and 1 owns Husky pro saws

Strengths:
Power,handling,price,quality,runs forever

Weaknesses:
none

Summary:
I out cut a husq 262 he put his saw down and watched me cut and complimented my saw when we were done and his 262 is a much larger saw

Strengths:
Light, fast , and economical

Weaknesses:
None yet