Guessing I'm late but those carbs on the 620/590 have a hole cut into the main jet to cause the saw to run overly fat at high RPMS, and it only gets worse as the saw breaks in due to the increased vacuum from the rings sealing better, the fix is really easy, just take the diaphragm off, drain and clean it with brake cleaner/carb cleaner and put a dap of JB weld over the hole, let it dry overnight, put it all back together and your saw will lean out properly, just make sure you haven't got it too lean obviously.
So i did the same thing the high and low jet and idle are set right when its warmed up but on cold start i have to flash the choke a bunch till it warms up.
if u think that is running right, maybe u shouldnt touch the carb anymore and let someone who knows what theyre doing re tune it where it should be. not bashing but thats clear as day you have the h screw out wayyy too far buddy.
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Guessing I'm late but those carbs on the 620/590 have a hole cut into the main jet to cause the saw to run overly fat at high RPMS, and it only gets worse as the saw breaks in due to the increased vacuum from the rings sealing better, the fix is really easy, just take the diaphragm off, drain and clean it with brake cleaner/carb cleaner and put a dap of JB weld over the hole, let it dry overnight, put it all back together and your saw will lean out properly, just make sure you haven't got it too lean obviously.
Carb didn't get adjusted right.
So i did the same thing the high and low jet and idle are set right when its warmed up but on cold start i have to flash the choke a bunch till it warms up.
Its a 2019 cs590 so its new
May need to richen up the low jet more...
@@kalebgrieve1729 thanks!
Turn that high screw in half a turn
I've adjusted it since and it is much better either way was better than stock though
@@jaredgilbertfarms2067 372 xp oe rpm best max 13200 ?
Way too rich indeed
if u think that is running right, maybe u shouldnt touch the carb anymore and let someone who knows what theyre doing re tune it where it should be. not bashing but thats clear as day you have the h screw out wayyy too far buddy.
Well. I was gonna suggest some carb issues but looks like I was beat to it lol!
Running way too rich
sounds like shit. that poor saw aint happy
Sounds like crap.