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#Post#: 74499--------------------------------------------------
Echo CS-803 EVL
By: Chainsawrepair Date: November 21, 2016, 11:45 am
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Saving info from whats on the bench thread. Dont think I have
seen a thread on these. Echo 803
[quote author=chy_farm link=topic=1732.msg74456#msg74456
date=1479471123]
An old Echo, CS-803 EVL. came the day before yesterday to me
with a lot of dirt, oily pitch on her. She came from mechanic
section of our farmers union from where where one another 803
has came to me this spring.
[/quote]
[img]
HTML http://chainsawrepair.createaforum.com/index.php?action=dlattach;topic=1732.0;attach=19490;image[/img]
[img]
HTML http://chainsawrepair.createaforum.com/index.php?action=dlattach;topic=1732.0;attach=19491;image[/img]
[img]
HTML http://chainsawrepair.createaforum.com/index.php?action=dlattach;topic=1732.0;attach=19492;image[/img]
#Post#: 74564--------------------------------------------------
Re: Echo CS-803 EVL
By: Eccentric Date: November 24, 2016, 3:44 pm
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That is super cool. Don't know if the 803 was ever imported
into the US. I've seen a couple 802's and 801's, but no 803's.
I ran an 802 back when I was in high school. It was clapped out
and a PITA to get started (not the saw's fault), but had good
torque. Was the "big saw" that we used when removing trees on
property cleanup jobs (to make motorcycle/truck/chasing skirts
money).
#Post#: 74618--------------------------------------------------
Re: Echo CS-803 EVL
By: sharkey Date: November 27, 2016, 2:43 am
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Echo impressed me early on as they were built to last. Echo was
one of the first to have an advance curve built into their
ignitions.
Here is some info on an 802;
HTML http://www.acresinternet.com/cscc.nsf/ed1d619968136da688256af40002b8f7/f0811c910c89304a88256d0d001ea5ca?OpenDocument<br
/>
#Post#: 74619--------------------------------------------------
Re: Echo CS-803 EVL
By: sharkey Date: November 27, 2016, 2:52 am
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I thought I would check around for the drawings on that cs-803
and couldnt get a hit at Echo. I did get a hit on the 802 and
802S from December 1970.
Here is the link;
HTML http://www.echo-usa.com/documentation.asp?s=cs-802&c=en-us
#Post#: 74621--------------------------------------------------
Re: Echo CS-803 EVL
By: Chainsawrepair Date: November 27, 2016, 7:50 am
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[quote author=sharkey link=topic=6180.msg74619#msg74619
date=1480236729]
I thought I would check around for the drawings on that cs-803
and couldnt get a hit at Echo. I did get a hit on the 802 and
802S from December 1970.
Here is the link;
HTML http://www.echo-usa.com/documentation.asp?s=cs-802&c=en-us
[/quote]
There is a sentence in here about 803 Japan being the 750 in US.
HTML http://chainsawrepair.createaforum.com/echo/echo-chainsaw-history-1963-1986/
#Post#: 77181--------------------------------------------------
Re: Echo CS-803 EVL
By: sharkey Date: April 30, 2017, 4:19 pm
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Appreciate the update, looked all over the place for that model.
#Post#: 77389--------------------------------------------------
Re: Echo CS-803 EVL
By: chy_farm Date: May 16, 2017, 8:46 am
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[quote author=Cut4fun . link=topic=6180.msg74621#msg74621
date=1480254638]-------
There is a sentence in here about 803 Japan being the 750 in US.
HTML http://chainsawrepair.createaforum.com/echo/echo-chainsaw-history-1963-1986/
[/quote]
We are able to read an information very close to this above from
Mark, a member of this site, and also a member of CSCF site, he
seems to be a good collector of old Echo;s.
John Deere 80EV
HTML http://www.chainsawcollectors.se/phpbb3/viewtopic.php?p=50868#p50868
My recent comparison on several Echo models including 803 tells
that the ratio of
(venturi size) / (throttle bore size)
given by the original carburetors to each models are somewhat
fun to go deeper, see a chart attached below.
This ratio is sometimes said to provide us of an easy comparison
index to see throttle responses between carbs and models, the
smaller ratio the faster the response.
A fun thing on this chart is that there are nearly the same size
of throttle bore, 19.00mm to 19.03mm, while motor size differs
in two ways, 60cc class and 80cc class, from the top to the end
except for the last model, CS-803.
Carbs for upper 6 models have nearly the same throttle bore,
while some have larger venturi size and some smaller from
15.88mm to 15.08mm. So the ratios in these upper six models are
nearly two ways, 79% and 83%.
Only the last one CS-803 has a bit larger carb, both of the
sizes are larger than other models, and also this 803 has larger
ratio than others.
Now one of presumptions I came to see is that this 803 was
perhaps designed for some special use, which was mostly needed
in domestic market than that of US. On of the evidences I have
been hearing here at a largest Echo dealer in this area Yokohama
is that this 803 was sold to gardeners who needed tough
root-cutter chainsaws.
To my understanding root-cutter saws seem they rarely need high
response carbs, rather they seem to need carbs for bigger
torque.
The second evidence to this presumption is a pic below, showing
two of my 803 out of three, one in the front has a genuine power
filter for root-cutting use. A more fun thing to see is that the
one in the back has a modified clutch cover in the other side,
for this see a pic added below. This Echo dealer says this
modification was done for this user at their place.
All these are my presumptions after all, so if I made some
misunderstanding pls feel free to let me know the truth.
And if not so wrong, glad if you could keep this in your mind
and remind this when you see the name of 803 somewhere some
time.
Chy
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