Tuned carb on cs 590

[bmwpowere36m3]

Start super rich, go a turn out (rich). Should sound like crap thru the cut and never clear up. Slowly lean it out a 1/4T at a time, repeat the cut. When it starts to bounce from a clean 2-stroke to burble, back and forth, in the cut your getting close.

Bsnelling and bobe8888, hope I didn't misspell, have great videos. Bobe8888 has one with a 590....

 

[Big Block]

Thank you I like the 590 it runs better then a lot of folks on AS will admit. I'm just a fire wood hack that needed something bigger then my FIL ms250. When you get bored of the stock saw open the deflector on the muff and retune it makes a noticeable performance gain and takes 5 minutes to do.View attachment 538244

Then there is the base gasket delete and an easy air filter mod

 

[James Miller]

Then there is the base gasket delete and an easy air filter mod

At this point a 372 or 461 is my best performance mod for the 590. But the base gasket may still go some day.

 

[Big Block]

At this point a 372 or 461 is my best performance mod for the 590. But the base gasket may still go some day.

I hear you on that. My 372 paid for it self already this season. I can tackle bigger wood than most fire wood hacks around here

 

[Rylan 02]

Hey, I just got my 590, and was trying to tune the carb.non the h and l, they only turn about.5 turn. What I am turning is the orange plastic caps, not sure if I need to take them off or what, but help would be much appreciated.
Also, will removing the deflector in the muffler void the 5 year warranty?
Thanks in advance!

 

[James Miller]

Hey, I just got my 590, and was trying to tune the carb.non the h and l, they only turn about.5 turn. What I am turning is the orange plastic caps, not sure if I need to take them off or what, but help would be much appreciated.
Also, will removing the deflector in the muffler void the 5 year warranty?
Thanks in advance!

I didn't take the carb off mine to pull the limiters. You dont have to to get them out.

 

[James Miller]

Any mods to the saw including pulling the limiters will void the warrenty.

 

[mountainlake]

They sell new limiters caps for around 79 cents. Steve

 

[Marley5]

I remove the limiters on every new saw and richen up for initial break-in "Echo".......usually end up loosing them or dog eats them off garage floor, really.

Never lost tune for lack of limiters.

Oh, dog eats all valve stem caps when airing up tires also.

 

[James Miller]

The plate to hold the limiters in came out on my 490 when I did it. Have no issue with wondering tune. Some guys say the screws under the limiters are hard to get a screwdriver on but I've never had an issue.

 

[mountainlake]

I'm one of the guys that say it's harder to get on the screws without the caps, I grind the tabs off on a bench grinder and put them back on. Steve

 

[James Miller]

I'm one of the guys that say it's harder to get on the screws without the caps, I grind the tabs off on a bench grinder and put them back on. Steve

I agree its easier with the caps back on. My 590 is that way. Tabs ground and replaced. When the plate came out with the limiter on the 490 I just decided to run it that way.