'15 Echo CS620PW Information
- Thread starter BGE541
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noshow74
ArboristSite Operative
Where did you get the tach I need one. Also what rpm should I set my 590 I'm not good at tuning by ear.View attachment 434543 New tach mounting set up on the 620... its SO heavy now...
Look up "TTO" tach on Amazon. Like $35. Echo has RPM ratings but honestly it would be best to learn to tune by ear as bar length, temp, humidity etc etc can all very RPM. The best way is watch videos of a tuned saw and hear it "burble" or 4 stroke at WOT, then when in woodit should "clean up" or be a smoother/clearer sound. Ill find a good video and link it here...
So check out this video... you can hear that at WOT before I start cutting its 4 stroking but when I get it in the cut it clears up, that it what you are going for...
add one more thing to the learning to tune issue. have a helper run the saw while you tune it. stand back 20 feet to listen inbetween tweaking the carb. i have a hard time hearing it while running some saws but if i stand back to listen it is clear as day. even the ones that are easy to hear when running them yourself become more noticeable with a little distance added.
zogger
Tree Freak
Now that is interesting, I might try that. I suck at hearing the burble clearly on most saws, so I chicken out and leave them too rich.
201T....cant hear them if my life depended on it when i am the one running one...If i stand back 20 feet or so i can hear it. there are a couple other ones that i get help to tune when they come in the shop but i am drawing a blank on which saws
Ok Gents I got started on a 600p this evening and here is were we are at so far the timing # are 152* ext xfersare 120* int is 160* squish is at .025
a few pic's
a few pic's
More pic's
That tool in the second pic is the ticket for aligning the washers up that go beside the rist pin.
That tool in the second pic is the ticket for aligning the washers up that go beside the rist pin.
D
Deleted member 83629
Guest
im been working on a 2 cycle today also not an echo but old and interesting to say the least it needed new gaskets,seals,bearings and rings. here is the specifications.
horsepower 3.5
bore 2.37
stroke 1.5
cu. in. 6.65
cc 108.99
compression ratio 5.5:1
idle speed 2400
max power 3300 rpm
such a little powerhouse.
horsepower 3.5
bore 2.37
stroke 1.5
cu. in. 6.65
cc 108.99
compression ratio 5.5:1
idle speed 2400
max power 3300 rpm
such a little powerhouse.
D
Deleted member 83629
Guest
OK back on topic.
cobey
Addicted to ArboristSite
??????
D
Deleted member 83629
Guest
good guesses but it is this all the way from 1974.
not jealous of you at all. i hate those things
Ok gents she is back together all but the muffler got to get screws for the deflector in the morning.
Big Block
WFO or I don't go
Damn that didn't take long. Do you recommend doing a carb and coil before porting ? Can you pm me a price to do my 590 ?
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Sent from my SM-N900T using Tapatalk
