I've taken the spark plug out and used my lit propane torch pointed in the plug hole and pulled the starter rope.
It will suck the flame out sometimes but just re light, it will "burp" a few times
usually clearing the cylinder as well as the crankcase of fuel.
Also check for mud dauber clay, plugging the little exhaust hole in the muffler.
Every year they plug several of my weed wackers as well as the leaf blowers.
They will also get into some air cleaners, even carb vent holes.
On a two smoke, they will absolutely not even "pop" much less run, with the exhaust plugged.