I have been using my Sears gas blower for about 10 years

WoW you're lucky, I had 4 of these from Sears bought one, the other
three were all warranty replacement. Mine had major carburetor issues.
Two of them the carb feel right off. The bolts that held them on
broke right off. I never got one to last more than two years. If
you've had it 10 years I would suggest you've gotten your moneys worth
out of it. Junk it and go out and buy a Stihl blower. I've never had
an issue with my Stihl blower. It should last you 25 years.