Author Topic: Echo 670 6700 680  (Read 10325 times)

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Offline sharkey

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Re: Echo 670 6700 680
« Reply #80 on: December 12, 2015, 06:40:36 pm »
I cant figure Echo out.  The early 6700's came with a Walbro HDA-47 carb, which is identical to the HDA-63 except for the length of the H/L adjustment screws.       

Over the last 10 years Echo has gone to smaller carbs on all of their saw engines.  The lone exception has been the cs-620 which went to 15.8 V over the 15.0 V on the 590/600p. 

The new 8000 (800p) comes in with a 15.8mm V carb?  HDA-153 is shown for the final version of the 8000 with HDA-324 listed as the new 800p carb.  Both are 15.8 V with the difference being the fast idle is on the choke pull of the newer carb.  Why would Echo spend the time and money engineering a new cylinder and piston (quad port hemi head with the flat top domed piston) to then put a smaller carb on the engine?  Just doesnt make sense...

Echo has even gone as far as to sanitize their IPL;s, removing references to the HDA-45 or HDA-63 carbs as having been used on the 8000.  Take a look at the factory diagrams if you dont believe me.  Its only through Walbro that the references to these larger carbs are available.   

http://www.echo-usa.com/documentation.aspx?s=cs-800p&c=en-us         
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Offline echofreak

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Re: Echo 670 6700 680
« Reply #81 on: May 14, 2016, 04:51:33 pm »
Yes it will work several of the echo saws have that muffler,

Just purchased and confirmed fit on my cs-670

hxxp://www.ebay.com/itm/391432677872?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT

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Offline Cut4fun .

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Re: Echo 670 6700 680
« Reply #82 on: January 03, 2022, 09:48:54 am »
@jbbbb fpound this in a spam email folder today. Says from you. = Mon, Dec 20, 2021, 9:27 PM Hi just got a mint cs 6700.. this is one of the early grey ones.. not a mark on it.. want to use it as a firewood saw.. needs a carb rebuild.. first and only owner let it sit on a self .. i can get it to fire.. wont really hold an idle.. this is the question.. before i do all that.. can i just put a larger cs 8000 carb into it.. is it a direct fit.. the muffler mod is not a problem.. or just leave the carb alone.. quick rebuild / muffler mod.. 24 inch bar.. its a heavy saw.. the faster you cut firewood balances out against weight.. thanks john

--------------------------------------------------------------------------------------------------------------------------------

Me =  I put the biggest 8000 carb made for the 8000 on a stock muffler modded 6700. IMO it wasnt worth it.  Just rebuild your 6700 carb or get another 670 680 carb.

Maybe the 8000 carb would help if one was fully ported on the wild side. But not on this one I did with just a muffler mod.

 

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