Chris J.
Addicted to ArboristSite
IIRC, some folks have posted that putting the carb from the 800 on the 670 will bring the 670 to life.
Echo Chainsaws
- Thread starter smeath
- Start date
Help Support Arborist Forum:
IIRC, some folks have posted that putting the carb from the 800 on the 670 will bring the 670 to life.
Bob Wright
Addicted to ArboristSite
I think the carbs are the same if not close enough to interchange...Bob
Mixed Bag
My 14 year-old CS 3900 is a great saw and I use it all the time as a professional saw. No problems whatsoever.
My good friend is now spending over $200 to repair the ingnition on his Echo 550, which is bigger and five years younger. Mine has considerably more hours on it. His stopped producing a spark.
Go figure.
My 14 year-old CS 3900 is a great saw and I use it all the time as a professional saw. No problems whatsoever.
My good friend is now spending over $200 to repair the ingnition on his Echo 550, which is bigger and five years younger. Mine has considerably more hours on it. His stopped producing a spark.
Go figure.
702EVL smoking
when i first start my 702 it smokes quite a bit, then after its run out a few times it clears up. this happens every time its started after sitting overnite. is there any way for oil from the tank to get into the crankcase and cause this ? i run 32:1 mix, it has good comp.(160psi.)and i've been through the carb and done the fuel lines,etc. any ideas ?
when i first start my 702 it smokes quite a bit, then after its run out a few times it clears up. this happens every time its started after sitting overnite. is there any way for oil from the tank to get into the crankcase and cause this ? i run 32:1 mix, it has good comp.(160psi.)and i've been through the carb and done the fuel lines,etc. any ideas ?
Sounds like the head gasket is leaking air into the combustion chamber, thus initially creating a lean mixture. After you run it for awhile, it expands and seals up.
If you ran 40:1, I have a feeling it would do the same thing, so it's not the fuel that's causing it. You can live with it or replace the head gasket. My vintage Mac 605 does the same thing. Some say that head gasket sealer can cure it, but that requires the same, if not more, labor time to fix.
Yes there are actually 2 places for oil to get into the crankcase. First is if the crankcase gasket is leaking. Hard to tell though and you would have to split the case to fix it.
The other and probably more likely place would be a leaking o ring on the oil pump itself. Just unscrew the oiler to replace them but do yourself a favor and count the turns on the oiler as you unscrew it and then put it back in the same number of turns.
A head gasket you say? A Echo 702 does not have a removable head to have a head gasket.
If your meaning a cyl base gasket, that wouldnt make it smoke on start up.
thanks wood doctor and mark- i will look into the oil pump o rings, not really wanting to split the thing right now. maybe press. test the oil tank if that doesn't work. i've gone a couple of rounds with the oil pump on my 315 before i got the drill down. .let ya know what i find. thanks
lawnmowertech37
Addicted to ArboristSite
Bump
KYXR600
ArboristSite Lurker
Echo family mods
Hello, I am a noob here but i would like to put some info into this forum if i can get some help out if that makes sense. I am currently a retired veteran from the army and just had my third surgery to straighten my left ankle out. So since oct 18 all i can do is comb ebay for parts and deals, i picked up a new echo CS 400 for limbing with no factory warranty sealed in the factory packaging for 225, a echo CS 680 from wise sales in IL for 529 shipped to my door the next day, and a echo CS 600P dealer demo saw for 400 shipped to me needless to say i am going stir crazy. The 680 is the only one with a warranty, but as far as the 600P and the CS 400 I want to make those 2 screamers. I have been following the 400 muffler mod on here the article with the guy that put the muffler on the flowbench after removing the cat and hogging out the muffler and tuning the carb and claims that the cs 400 runs with 55cc saws, WOW!:smile2: I am definately doing this mod. But as far as the 600P I haven't seen any mods for this saw . Can I do the same as the 400 and hog out the muffler and richen the fuel mixture. I saw a 600P on youtube by blsnelling that was ported and that saw was a BEAST, I get my cast off in one week and i am itching to get back into the garage and modding some saws. Anyone's help or criticism would be appreciated.:msp_biggrin:
Hello, I am a noob here but i would like to put some info into this forum if i can get some help out if that makes sense. I am currently a retired veteran from the army and just had my third surgery to straighten my left ankle out. So since oct 18 all i can do is comb ebay for parts and deals, i picked up a new echo CS 400 for limbing with no factory warranty sealed in the factory packaging for 225, a echo CS 680 from wise sales in IL for 529 shipped to my door the next day, and a echo CS 600P dealer demo saw for 400 shipped to me needless to say i am going stir crazy. The 680 is the only one with a warranty, but as far as the 600P and the CS 400 I want to make those 2 screamers. I have been following the 400 muffler mod on here the article with the guy that put the muffler on the flowbench after removing the cat and hogging out the muffler and tuning the carb and claims that the cs 400 runs with 55cc saws, WOW!:smile2: I am definately doing this mod. But as far as the 600P I haven't seen any mods for this saw . Can I do the same as the 400 and hog out the muffler and richen the fuel mixture. I saw a 600P on youtube by blsnelling that was ported and that saw was a BEAST, I get my cast off in one week and i am itching to get back into the garage and modding some saws. Anyone's help or criticism would be appreciated.:msp_biggrin:
"I have been following the 400 muffler mod on here the article with the guy that put the muffler on the flowbench after removing the cat and hogging out the muffler and tuning the carb and claims that the cs 400 runs with 55cc saws, WOW!"
Right to start with, the CS-370's and 400's are NOT "screamers". Those engines do not like or want to run at really high rpm's. I own two, and have muffler modded and fattened up the carbs on a least half a dozen of them to date.
They are best set-up with a 14" bar with 3/8" LP. With the muffler opened up, and carb fattened up some, they make a great limbing saw. They also cut pretty fast with the 3/8" LP set-ups.
In really small material they cut fast enough to be close to a 50-55cc saw, but either one of my closed port 55's smoke them easily in larger material. There really isn't even any comparison in speed and power between them.
What is amazing about the 370/400's, is how much "grunt" they have for the cc's, they are excellent little limbing saws. For the "home-owner" clamshell type saws, they are at the top of the pile in that cc range, IMHO. Dirt cheap, well made, and decent power. Mine are my "go to" saws for limbing, and they have proven to be dead solid reliable and very fuel efficient. I don't even break out the bigger saws these days till I get into material beyond about 12" in diameter.
I've owned two CS-670's and still have a CS-6700, which was recently completely rebuilt with a new P/C. That line of saws is NOT a "home-run" in the Echo line-up. They are OK, and do fine for 67cc's, but if you own a Husqvarna 262XP or 268XP, you woln't find yourself ever reaching for an Echo CS-670/6700.
The 600P is getting good reviews, and Brad seems to have done well with the one he ported. I asked some specific questions about that deal recently, and not a word from him about it. I respect his opinion on these things, and recomend consulting with him before you start porting the muffler or anything else.....Cliff
Right to start with, the CS-370's and 400's are NOT "screamers". Those engines do not like or want to run at really high rpm's. I own two, and have muffler modded and fattened up the carbs on a least half a dozen of them to date.
They are best set-up with a 14" bar with 3/8" LP. With the muffler opened up, and carb fattened up some, they make a great limbing saw. They also cut pretty fast with the 3/8" LP set-ups.
In really small material they cut fast enough to be close to a 50-55cc saw, but either one of my closed port 55's smoke them easily in larger material. There really isn't even any comparison in speed and power between them.
What is amazing about the 370/400's, is how much "grunt" they have for the cc's, they are excellent little limbing saws. For the "home-owner" clamshell type saws, they are at the top of the pile in that cc range, IMHO. Dirt cheap, well made, and decent power. Mine are my "go to" saws for limbing, and they have proven to be dead solid reliable and very fuel efficient. I don't even break out the bigger saws these days till I get into material beyond about 12" in diameter.
I've owned two CS-670's and still have a CS-6700, which was recently completely rebuilt with a new P/C. That line of saws is NOT a "home-run" in the Echo line-up. They are OK, and do fine for 67cc's, but if you own a Husqvarna 262XP or 268XP, you woln't find yourself ever reaching for an Echo CS-670/6700.
The 600P is getting good reviews, and Brad seems to have done well with the one he ported. I asked some specific questions about that deal recently, and not a word from him about it. I respect his opinion on these things, and recomend consulting with him before you start porting the muffler or anything else.....Cliff
Echo's have always been well-built, reliable, easy starting saws. I dunno if I would get one in lieu of a Stihl or Husky(though I would rather have a CS-530 than an 026 or 260 or 350). But I do see used ones for great prices on CL, and they take to mods very well. The new breed seems to be more aggressively ported. They all desparately need a proper muffler mod, tho, to wake up any.
Here's my lil CS-520 with a mild port job, running a 20" bar in a Sycamore stump:
<iframe width="560" height="315" src="http://www.youtube.com/embed/O02RXQqZuvE" frameborder="0" allowfullscreen></iframe>
The transfer design on the 500 series is well done, and really fills the chamber at mid to high range fairly well. But you can mess with them and get much more out of an Echo if you like. I am looking for a 530 to tinker with at the moment.
The newer Echo's have a certain feel about them I like. Very solid.
As for the 262xp comment - If you have a 262xp even modestly modded, you probably wouldn't reach for your 440 or 372 much of the time either ...
Here's my lil CS-520 with a mild port job, running a 20" bar in a Sycamore stump:
<iframe width="560" height="315" src="http://www.youtube.com/embed/O02RXQqZuvE" frameborder="0" allowfullscreen></iframe>
The transfer design on the 500 series is well done, and really fills the chamber at mid to high range fairly well. But you can mess with them and get much more out of an Echo if you like. I am looking for a 530 to tinker with at the moment.
The newer Echo's have a certain feel about them I like. Very solid.
As for the 262xp comment - If you have a 262xp even modestly modded, you probably wouldn't reach for your 440 or 372 much of the time either ...
+1 on the 500 series. I've owned just about every Echo saw made in the last decade or so, and the CS-510 with a mild muffler mod is by far and above, pound for pound, the best Echo saw I've ever owned or ran. It flat SCREAMS, loves high rpm's, and cuts as well as either of my closed port Husqvarna 55's, with a LOT more grunt and mid-range power. It's a "home-run" for Echo, and one of my favorite saws.
BTW, I dumped the CS-800, and both CS-670's on Ebay because they were NOT in the same ballpark as the CS-510 is with 50-55cc saws. I found the larger Echo saws to be way to easy to pull out of the higher rpm range in the cut, and although they "grunted" OK, were pretty lacking in upper mid-range and top end power.
One must also consider, I'm conparing the 800 to a Husqvarna 181SE, and the 670's to the 262XP/268XP.....and there really isn't much of a comparison there....IMHO......Cliff
BTW, I dumped the CS-800, and both CS-670's on Ebay because they were NOT in the same ballpark as the CS-510 is with 50-55cc saws. I found the larger Echo saws to be way to easy to pull out of the higher rpm range in the cut, and although they "grunted" OK, were pretty lacking in upper mid-range and top end power.
One must also consider, I'm conparing the 800 to a Husqvarna 181SE, and the 670's to the 262XP/268XP.....and there really isn't much of a comparison there....IMHO......Cliff
indiansprings
Firewood Purveyor
A dealer I have a very high level of respect for as he's been in the saw business over 30 years told me Saturday the new Echo line up, especially the 500 series is prolly the best saws he's seen Echo put out.
He thought they have made great strides in performance with this latest series. He stated the warranty still isn't worth the paper it's wrote on on, and Echo won't re-emburse the dealers for warranty work worth a damn, but they are prolly making the best saws they have ever made with the lastest 400-500 series. He thought the 600-800 series still weren't up to par with their Husky and Stihl counterparts, but the company is showing great improvements from where they were in the last few years.
He thought they have made great strides in performance with this latest series. He stated the warranty still isn't worth the paper it's wrote on on, and Echo won't re-emburse the dealers for warranty work worth a damn, but they are prolly making the best saws they have ever made with the lastest 400-500 series. He thought the 600-800 series still weren't up to par with their Husky and Stihl counterparts, but the company is showing great improvements from where they were in the last few years.
BiggerDiggler
ArboristSite Member
A lifetime of echos
My first chainsaw was a 452vl in 1983 and cleared out over 1000 miles of trail on foot, carrying it on my back. I just traded another 452vl (along with a small McCulloch) for a 266. I still have an old 500EVL (built from about 1983 or so) and have a newer 305, which is the lightest saw I have ever used.
It is truly amazing for such a tiny featherweight thing. It absolutely refutes everything people says about smaller saws being unreliable.
Echos are bulletproof.
But as has been said, they are heavier and not as much horsepower than comparable Stihls and Huskys. But I think many if not most casual users would get a much better saw (for them) much cheaper and much better made than many of the comparable stihl and husky homeowner saws.
My first chainsaw was a 452vl in 1983 and cleared out over 1000 miles of trail on foot, carrying it on my back. I just traded another 452vl (along with a small McCulloch) for a 266. I still have an old 500EVL (built from about 1983 or so) and have a newer 305, which is the lightest saw I have ever used.
It is truly amazing for such a tiny featherweight thing. It absolutely refutes everything people says about smaller saws being unreliable.
Echos are bulletproof.
But as has been said, they are heavier and not as much horsepower than comparable Stihls and Huskys. But I think many if not most casual users would get a much better saw (for them) much cheaper and much better made than many of the comparable stihl and husky homeowner saws.
I bought a slightly used CS 440EVL about 1992, when I got the 10 acres I live on now. Still does a good job, is a go-to saw for me because of the size, has a 16" bar. Recently opend the muffler up and I like it better. We have an Echo dealer in our little town, so that helps. I would buy another one, but I would stay at the pro end of the lineup. I also have two stihls, one Poulan, one Homelite, and a Mac 610 and another little Homelite in a bucket to be fixed.
I think the 440EVL is pretty cool in that it has the adjustable oiler, and I can even adjust the chain brake some (never needed to so far). It's all metal except for the filter cover. I like it. We also use some Echos at work (utility line clearing), but understand we don't clear big stuff, just limbs and small trees mostly.
I think the 440EVL is pretty cool in that it has the adjustable oiler, and I can even adjust the chain brake some (never needed to so far). It's all metal except for the filter cover. I like it. We also use some Echos at work (utility line clearing), but understand we don't clear big stuff, just limbs and small trees mostly.
miking
ArboristSite Operative
The newer models are nice too. I ran 260's and 026's for years but my 530 is more than a match for them. My 600P might well be the best of the class of saw I have and compares favorably with the 361/2. Even the stihl guys I work with are impressed by them. Last week on a prescribed fire, my 680 cut several burning snags and made numerous cuts in burning logs and did so well that the stihls stayed on the trucks.
Sure my CS8000 turns no where near the RPM of my 385xp or Dolmar 7900 yet all 3 are within a second or 2 in a 20 second cut, the CS8000 can pull a more agressive chain. Steve
Yeah ok, I admit I was being optimistic when I made that statement quite some time ago. I was comparing the performance of my flowbenched CS-400 muffler to a........Husky 55 Rancher. And I had a Stihl Picco Chain on it, not the Oregon 91VX I have now (which is much better chain for the saw). Still, the mods which are totally external to the engine itself, made a HUGE improvement.
If you liked the flowbench data, wait till you see what I have brewing for modifying my Echo String trimmer
