First couldn't get it to start,drained old gas out put in fresh,now it will start be keeps cutting off after a while.

Snow thower starts but while using it keep cutting off

Hi,
Draining fuel I am afraid does not unplug the jets that get plugged by bad fuel. They can eventueally clear, but as likely is that the good fuel will dissolve the residue and itself degrade to a state that is not readily combustible.
Peace,
Clarke