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#Post#: 38797--------------------------------------------------
Echo 590
By: 1manband Date: April 19, 2014, 12:32 pm
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picked one of these up today, for what i think is reasonable
price.
initial thoughts (before putting it into wood):
-seems it likes cheeseburgers a little more than salads.
-plastic looks thinner than your typical husq.
-one of the spring anti-vibe attachment points is to a plastic
tab.
-another attachment point for the spring anti-vibe has an
unusual nylon strap. (believe it may be there to limit total
movement?).
-air filter is nylon mesh. looks more like an after thought.
seems wimpy, and do hope it will seal well, unsure that it
really can at this point.
-chain adjuster location is very convenient. bar nuts do seem
small.
-the dog resembles a steel stamping.
-equipped with an 18" guide bar, it's well balanced, and does
not tip over like my husq at rest.
-the effective cutting length of the 18" bar seems very short.
whether it's from the large dog teeth or something else, will
measure it, to be certain.
-has a winter/summer slider, i'll have to look through the
instruction booklet to see which position is which.
it is, what it is.
the saw came with a sqrench, and weird kick-back bar end adapter
w/nut and bolt, in the bag.
as soon as i can figure out how to correct my camera/computer
hardware recognition problem, will post up some photos of the
observations above.
regards
-joe
#Post#: 38803--------------------------------------------------
Re: cs-590 wolf review. bone stock.
By: 1manband Date: April 19, 2014, 4:33 pm
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closer look on a few things:
-adjustable oiler
-plastic clutch cover
-chain drive spur gear looks of good quality, to drive the
oregon 3/8 ths chain.
-inboard clutch. (anyone who has taken a clutch cover off a
husq with the chainbrake on should know what i think about this.
yay! hahaha.)
-tried moving the winter/summer operation switch, it got stuck
on winter position.......
....this led me to have to remove the carb mounting bolts. (did
not want to break anything).
then found:
-walbro carb, mounting bolts (T27) seem to thread into plastic.
(possibly, metal nuts are on the back side, but i did not remove
to be sure. did see tapped threads going through the plastic,
though). the intake tract looks like a straight shot into the
cylinder.
-air filter, which originally thought may be an issue, is not.
fully enclosed and sealed, and should work fine.
-plenty of room in the bottom of clutch cover to eject long
sliver chips when noodling.
-the muffler exhaust outlet location, is on the top face of the
box muffler. directly under the plastic chain brake handle.
looks similar to typical style, as used on their weed-beaters.
-the gasoline level can be seen somewhat in bright sunlight,
through the semi-transparent tank plastic. on a cloudy day,
good luck with seeing that.
-joe
(still working on the pictures problem).
#Post#: 38991--------------------------------------------------
Re: cs-590 wolf review. bone stock.
By: 1manband Date: April 22, 2014, 4:04 pm
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pic #1 oiler: turned it down to lowest setting. exxon valdez in
oiler.
pic #2 "nylon strap to anti-vibe
pic #3 muffler outlet location
pic #4 oregon? bar
now that i can post up photos again, will post up some tweaks
made air box, and carb.
ran it: first impression, it's good, not fast... but has some
torque. did not bog down, under some downpressure.
muffler temp at the after 1 tank was 181*F. don't think that
was too high at all for a cat equipped muff. (measured with a
fluke IR thermometer). in comparison, my Husq 340, (without a
cat muffler) runs 168*F.
-joe
#Post#: 38998--------------------------------------------------
Re: cs-590 wolf review. bone stock.
By: sharkey Date: April 22, 2014, 5:22 pm
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No cat in these mufflers that I know of.
Be very careful with those carb mount bolts. With my calibrated
wrist a half sneeze past snug and the bolts strip. If they
strip, you will need the echo 8000 nuts and bolts or a new tank
because the partition is part of the tank.
Im working with one now. I opened up the muffler and widened
the intake and exhaust/transfers and put a bigger carb on to see
how it would react. The air box is pretty restrictive so I went
with a v-stack and a uni-filter. Weather permitting will run it
this weekend and let you know.
#Post#: 39072--------------------------------------------------
Re: cs-590 wolf review. bone stock.
By: 1manband Date: April 23, 2014, 4:42 pm
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thanks for the heads up on those carb bolts, sharkey.
the instruction manual said "catalytic emissions." sticker says
my saw was born on may 2013. did not take a peek into the
muffler yet. hope it does not have one.
the partstree site listed two IPL's for the cs-590. one for
2012 models? and 2013? guessing on years, because it goes by
serial #'s. could you by chance be working on a 2012?
that air box elbow to carb thing is odd. trimmed it down quite
a bit. your solution sounds better.
got the carb tweaked up, but went way too far. now, can't get a
steady idle. i'll get the idle back. just need to get the
soldering iron out, and some more tweaking to find the right
size hole. once a couple of small parts come in, the tweak will
become permanent. will post some pics, later tonight of the
process.
regards
-joe
#Post#: 39085--------------------------------------------------
Re: cs-590 wolf review. bone stock.
By: sharkey Date: April 23, 2014, 6:25 pm
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Hi Joe,
The one Im working with is a 2010, 600p. I wanted an early one
to see what was coming in the way of changes. So far I havent
seen much.
What did you do to the carb?
Bob
#Post#: 39097--------------------------------------------------
Re: cs-590 wolf review. bone stock.
By: 1manband Date: April 23, 2014, 7:22 pm
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bob.........the carb stuff is nothing fancy. the camera i left
at work, will post them tomorrow. the pics will explain it a
whole lot better then i can do with words.
idea is get better mid range and WOT adjustability. the idle
speed screw is turned in on the stock carb say "x"amount of
turns, the air goes by the small indent on the butterfly, but
quite a bit of the air gets by the butterfly by going around the
outer circumference of the butterfly. the combined air helps
set the mix at idle speed.
i turn the idle screw out as many turns out it takes to just
close the butterfly completely. (what that does), now the only
air that can get by the butterfly, is going through the small
indent. then i drill a few holes in the butterfly, which will
control idle speed air only. thing is, you have to guess how
big and/or how many. tune the saw as usual, get it hot, then
tune the idle speed.
thats the gist of it. right now, i have too large and/or too
many holes. idle leans out and speed goes up. plugging the
holes one by one, then test/tune, after each plug. then i'll
get a new butterfly. then tranfer the best final best size hole
to it.
right now, it runs very well, except for the idle. the low
speed is more like an intermediate jet, the high is still the
high, but the hole is now like an fake idle jet. hope it makes
sense. if not, the photos hopefully will. some photos show
some mistakes and bad guesses made along the way made as well.
but it's all part of the process.
regards
-joe
#Post#: 39133--------------------------------------------------
Re: cs-590 wolf review. bone stock.
By: sharkey Date: April 24, 2014, 8:49 am
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Here are a couple pics of this 600p with the V-stack and Uni
sock filter.
The HDA-66 on there now is a little larger. Dimensions for the
HDA-66 are: Choke Bore 22.20mm, Venturi 15.88mm and Throttle
Bore 19mm. Original HDA-268 is 19mm Choke Bore, 15.08 Venturi,
and 19mm throttle bore. The 590/600p uses the longer resonance
tuning of the air box with the smaller choke bore of the
HDA-268. Take your air box all the way off and look at it from
where it attaches to the carb. All together it looks to be
about 4 inches in length. I havent done the calculations on the
intake, Im just trying different carbs to see if there are any
benefits that jump out at me.
When you had your carb apart and the metering diaphragm off, did
you notice the feed hole in the main nozzle base? Semi-fixed H
jet at .058mm. It will feed fuel directly from the metering
chamber no matter where you have your H twist jet set at.
Should only flow when vacuum is high though. I dont think its a
bad idea, just there for warranty purposes I suppose. Can plug
it if you want to. Usually these Walbro carbs will flow plenty
of fuel, its getting enough air to burn that fuel that matters.
#Post#: 39135--------------------------------------------------
Re: cs-590 wolf review. bone stock.
By: sharkey Date: April 24, 2014, 8:54 am
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Pic 2
#Post#: 39162--------------------------------------------------
Re: cs-590 wolf review. bone stock.
By: 1manband Date: April 24, 2014, 6:22 pm
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[quote author=sharkey link=topic=3434.msg39133#msg39133
date=1398347340]
Here are a couple pics of this 600p with the V-stack and Uni
sock filter.
The HDA-66 on there now is a little larger. Dimensions for the
HDA-66 are: Choke Bore 22.20mm, Venturi 15.88mm and Throttle
Bore 19mm. Original HDA-268 is 19mm Choke Bore, 15.08 Venturi,
and 19mm throttle bore. The 590/600p uses the longer resonance
tuning of the air box with the smaller choke bore of the
HDA-268. Take your air box all the way off and look at it from
where it attaches to the carb. All together it looks to be
about 4 inches in length. I havent done the calculations on the
intake, Im just trying different carbs to see if there are any
benefits that jump out at me.
When you had your carb apart and the metering diaphragm off, did
you notice the feed hole in the main nozzle base? Semi-fixed H
jet at .058mm. It will feed fuel directly from the metering
chamber no matter where you have your H twist jet set at.
Should only flow when vacuum is high though. I dont think its a
bad idea, just there for warranty purposes I suppose. Can plug
it if you want to. Usually these Walbro carbs will flow plenty
of fuel, its getting enough air to burn that fuel that matters.
[/quote]
bob.......thanks for sharing the good info! like the way you
are going with this. totally agree with the point, you make,
that it needs more air. how is it with the larger carby?
haven't gotten to the point of thinking about intake length
tuning. will work out some numbers on 4 inches, to see what we
have. thought about this kind of thing a long while ago, the
lengths needed were more than 4 inches if i remember correctly.
maybe can shoot for a harmonic of the proper length??
have not taken the bottom of the carby off. did not want to
plug anything after seeing how much fuel 298A can add.
my angle of thinking to all this, is just trying to delay the
crossover feed point of the of the low to high speed jet to a
higher rpm. similar to the way a bigger carb behaves, compared
to stock.
pics in my next post.
regards
-joe
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