Echo CS 3000 Piston Rings

[Toneman]

I recently purchased a CS 3000 saw for some limbing and climbing jobs. When I purchased it, the sales person told me that it has dual piston rings. I went on the web site and downloaded a parts list for this saw, and to my surprise, the listing only calls out one piston ring.
Does anyone know how many rings this saw has?
Thanks for your help
Tony

 

[treeclimber165]

Never opened one up. As cheap as they are, it isn't worth making major repairs if they wear out. You can pull the muffler and look, though.
I prefer the 3400 for $30 more. A lot more balls with the same weight. Taking a prydriver and opening up the exhaust outlet (after throwing away the clogger.... oops I mean spark arrester screen) helps power, too.

 

[rahtreelimbs]

echo piston rings

The Echo 3000 has 1 ring, the 3400 has 2 rings. I don't know that it's a big concern as low priced as they are. A friend of mine runs a Husky 272 ran it pretty hard for close to 10 yrs. He just recently replaced the whole top end ( cost was $242 ). This saw is like new.

 

[tony marks]

boy rich ,they sure slipped that fact past me.hd even has a 2 ring
display of a cylinder w piston. in any case this ones doing alright.
also has the 1 yr commercial 2yr. consumerwarranty.
now wheres my manual an pts list.

 

[Toneman]

Tony, you can get the parts list of the Echo web site,
www.echo-usa.com

 

[tony marks]

not having been into one i cant say for sure. but the parts list shows both 3000- and 3400 with a single ring.think ill go dn an see if i feel like they are misrepresented by echo at the HD .
if theres not a distinction in fine print somewhere saying that the 3000 has a single ring . ill have some fun.they sure make it look standard for echo motors to have 2 rings.we ll see what happens.
by the way ,thanks toneman.

 

[Dennis]

I havent looked at the parts lists by any means..but I do recall some Parts lists for some mfg's showing only one ring...but behind the part number saying..."x2"..or a denotation at the bottom...etc...

 

[tony marks]

yes dennis ,i emailed echo and they confirmed the single ring.
they said the 2 rings were mostly trimmers etc . although i know the larger echos do have double rings also.
after thinking about it ,a 4cycle motor has a oiling ring and a compression ring ,so really dont know why a 2 cycle would need 2 rings for compression ,unless one is a backup.any thoughts ?

 

[Toneman]

I was in at the HD today, and looked at their display model of the CS 3000. The information tag indicated that there were 2 piston rings in the saw. I spoke to the sales person about it and he said that they absolutely have 2 rings. I told him to check out the parts list on the web site during his break and I would be back to discuss it with him tomorrow.
I think I am going to ask for my money back.
Will let you know how I make out
Tony

 

[WOLF_RIVER_MIKE]

Toneman, the information I have is dated (1998) but the CS-3000,3050,and 3400 run one ring. Th CS-3450 has two.

 

[tony marks]

this is about like lowes selling poulan pros. on the 260 the saw said 42 cc the tag and advertisement said 40 cc.
my problem w this was when i had to order pts ,which motor did i order for,as apparently poulan pro had both.. i think they are still mislabeling like this.mine was stolen anyway so the point became a nonissue with me.
if what u say is right toneman, thats claiming more than what is the case . my understanding is they can get away with a claim that is less than what is ,but not more.which is very much against the law.my wife is in retail and theres some kind of fed enforcement of this. personally i just like my saw. so other than having a little fun , i think ill keep it.it really is a good little hand saw.still didnt hear from anyone on why a chainsaw would need two rings.unless it just looks better.

 

[WOLF_RIVER_MIKE]

Tony and everybody, before you go running off to exchange those echo's, ya'll do a search on "piston rings" w/out quotes, look for "Husky two rings or one" thread. What do those saws cost, a couple a hundred?... You probably purchaced the saw because it was probably going to get chunked out the tree, right...ya'll relax sheeeez.

 

[tony marks]

easy mike,i said i like my saw.actually wouldnt trade it for another of its type. in fact i have a really good condition 020 that is a back up to it. and its a good limb saw. just heavier.
im going to look closer at the depo tho . thats my little beef . there should be proper representation of product ,when they sell it.i agree a man needs to think a little before he acts.like i say ,i ll mostly just have a little fun withum.
with all the pros on here ,and no answer to the question ,
why does a 2 cycle need 2 compression rings , im starting to think no body really knows. could it be that 2 rings is just to impress. most pro type saws gottum but does the second ring really do anything. not sayin thats the case. just wondering.

 

[WRW]

Tony,
Some manufacturer states that heat transfer is better with two rings than with one. That's the only reason I've heard for the two rings. With three rings it'd probably freeze!

 

[tony marks]

good one wrw

 

[Toneman]

I agree with Tony on the misrepresentation on the HD info with respect to this saw. I do like the saw as it is fairly light weight and it is not that expensive if I drop it out of a tree and it gets damaged, it is not a big $ loss, unlike an 020.

With the 1 v 2 ring issue, I believe that with 2 rings the engine is more efficient in the sense that very little compressed fuel and oil mixture "blows by" the ring end gap and into the crankcase since there are 2 rings and the end gaps are staggered. With the 1 ring there is some compression loss due to the end gap. One would also note that with 1 ring there is less friction in the engine and there for less power is used to move the piston inside the cylinder. Last point, the fact that it costs less to make a motor with 1 ring v. 2.