What saws were you running against, did the CS400 get in that category as it's just over 40cc but I find it quite a bit more power than the CS370. Either one I use around the mill cutting slabs and some log ends . Steve
'15 Echo CS620PW Information
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What saws were you running against, did the CS400 get in that category as it's just over 40cc but I find it quite a bit more power than the CS370. Either one I use around the mill cutting slabs and some log ends . Steve
Too cool lmal
Lmao
fordf150
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Ok maybe it is. Used it again tonight to cut a couple cord worth of trees down. Limbed them and cut the them all to 8' lengths for the processor. 400 was great for limbing but left allot to be desired for cutting 14" elm trees down and bucking the main trunks to length.
cobey
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Smacked the poo out of a stock 400..... I got one I play with but it's not mine, with the same treatment the 400 should run with most any 40 to 42 cc saw.... the chain makes a bunch of difference too
Got some wood to test the 620 in
cedarshark
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Did you use another 620P deflector on the second port or the aftermarket one for sale on flea-bay? Saw sounds good. That second deflector is a tight fit !
Used a 288xp deflector with about 1/8" cut off the back and made to tuck nicely under the crimp. It is a tight fit but had good clearance but wanted it to be reasonably clean.
cedarshark
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Good job. You are well over the "80% of cylinder exhaust port" rule you read about on AS. Do note any problems ?
Inside the muffler their is a center baffle with (7) (or more) 3/8" holes in it. So 3.14x.1875x.1875=.11039"x(7)=.7727" <This is the "limiting" or internal resistance for the gasses, I don't honestly see opening up the side port harming it. I haven't gotten it in wood yet but it fired right up on choke and then on high idle as it always does. Don't think their will be issues but I will report any findings, not too horribly loud either...
cedarshark
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I have just finished putting a piston in my 620p and I noted the holes in the internal baffle. I have enlarged the original exit port to over 80% of the cylinder exhaust port. As you have noted, it is slightly louder but far from obnoxious. I can tell it is breathing better because it is running richer....so rich, I note unburned fuel in the muffler. I need to lean it out but I don't have any large wood and it's over 100 here.
Thanks for doing the math!
Thanks for doing the math!
The last one I done I did I took the plate out on one side the clutch side and used 262 deflector it sounded loud but great but note I like loud
You have photos? Glad its working out and hope it tunes up nice for you, they are great after 6-7 tanks
Yes on the unburnt fuel, you can see in my little video (granted not too warmed up) there is an excess of unburnt fuel as well just from the second port, think these saws love fresh air...
