Echo 7310

[Bruno of NH]

Remove the muffler and take the spark arrester off cut it open then drill a 9/16 in the baffle in the muffler.
Put the screen and spark arrester back on.
Then re - tune
It will run much better

[OldTimbercutter]

I might try that . Thanks .  Did you remove the limiter caps when you retuned yours?
I have heard they are aggravating to get off.

[Tacotodd]

Easy to do on Echo. A wood screw or something else like it. Screw it in just enough to bite, and pull. Pops right out. Don't lose it if you EVER might need to take it back in for any warranty work.

[Bruno of NH]

Yes I removed the limiter caps
Take a sheetrock screw 
File the point down a bit.
Screw it in and the whole assembly pops out.
My dealer won't care that they aren't in.

[ladylake]

  I grind the tabs off the limiter caps and reinstall them, it's easier to use the screwdriver for tuning with them on.  If worries about the warranty you can buy new one for under a $.  Steve 

[curved-wood]

I'm surprised at the vibration it has.

I have a Echo 501-p and I felt the same about vibration. A lot more than my Husquavarnas. Difficult to sleep because of pain in the wrist. So I put a thin layer of foam tapes with electric tape on the handle. I did improve  a lot