How can I fix TB75SS/runs for a while but then stops like/no fuel?

I have a Troy Bilt TB75SS have never had any issues until till now. When priming the Trimmer starts just fine, always starts. Runs for a while but then stops as if it has run out of fuel but of course it hasn't. I've checked the fuel filter and air filter and they are fine. In fact I removed the air filter for a short time thinking that it was clogged. No change returned the air filter.
Any help would be appreciated.