Good question. For about a year now, I've wanted to bring some information to the Echo guys in a way that hasn't been done yet. I want to do some video comparisons between the 600 series saws. For example: MM & tune 600 vs. MM & Tune 620. This is one that is talked about a lot on these forums (with the Echo guys) because the 620 has an unlimited coil and possibly some timing & porting differences that give it a little more power. Often times when discussing the 600 series, it will be recommended to buy the 620 and skip the 600 for these reasons. I've been saying for a while now that a MM & tuned 600p cuts real close to a MM & tuned 620p. I just need to get some good vids so the information is accurate and I'm not just going by feel. The point being that, for what a 600p can be bought for, it's hard to pass one up for the more expensive 620p. The last two I bought NIB off Ebay for $400 each to my door (back in the winter). There just isn't another 60cc that can compete with that price vs. performance (except maybe the 590). Also, I believe guys put too much stock into the unlimited coil of the 620p. In the cut, where it matters, I don't see the unlimited coil as making that much difference. I need proof though.
I really like my MM & tuned 600p. It starts super easy and cuts really good and of course, is reliable. It's a 2012 version with the aluminum handle (2nd gen?). Like you, I see myself keeping that saw for a long time just how it is.There are also different versions of the 600P and they have different part numbers for the P/C. My 600P Ebay purchase ended up being an early version. It flat ROCKS and I've done nothing more to it than install the higher muffler deflector set-up used on the later CS-590's with the restriction trimmed out of it. I wouldn't touch it for any reason, which includes increasing squish or porting of any kind. It cuts very fast, with a broad/smooth power curve, and not lacking anyplace.
I've heard several comments about the CS-620's being up to 25 percent higher in power than the CS-590's/600's. At some point I'll get one and do some time cutting against the CS-590 and 600 that I have, but not really expecting to see that much difference in them.......Cliff
How much we talking? How much difference in pricing between Asia & Austria?
I wouldn't describe the 620p that way at all. Echo didn't do anything to mess up the torque we've grown to love.I'd bet most of the gain on a 620 is right at the muff, if Echo raised the exhaust port to gain a few RPM at the expense of lower RPM torque I'll run the 590 or 600 with a muff modd as I don't like finicky high rpm saws that fall flat on their face soon as the rpm drops. Steve
cliff-Spent some time yesterday with a new CS-590. One of my good friends and customers who owns a tree service dropped the hammer on one for a ground saw for his crew. He ran my CS-600 recently and absolutely loved it. He's replacing a 555XP that he just smoked the P/C on. He did note that the CS-590 was a bit heavier, but loved the smooth broad power curve. This will be a good test for the lower end of the range on that Echo 60cc platform. He'll run the bag off of it, cutting up 11 nice size Ash trees with it today, so we'll get a report as to how well it does in full time service and any problems or durability issues as well, since I'll be doing all the service/repairs on it.......Cliff