James Miller
Addicted to ArboristSite
Mine now has the muff opened and and the front of the deflector cut out and retuned after 5 or 6 tanks. Its a strong saw and keeps getting stronger iv been told 8 to 10 tanks before they start giving all they have. I find my cs590 sits till the wood gets to big for the 16" bar on the 490. Mostly oak and other hard woods around me and this saw will pull the 16 with full chisle barried all day and not complain. I'll get pics up of the muff and deflector mod in the morning.