Dont turn the prop yet. remove the engine from what's left of the plane. close the carb and clean the outside of the engine with rubbing alcohol or some solvent, even WD40.

When the outside is clean, remove the back plate and look inside. Swap it out wirth Q-tips or simular. Remove carb and look underneath for debre. Flush out with your cleaner. Remove the muffler and look inside the combustion chamber with a flashlight? Then turn it over and see what you have. Make sure it's well oiled when you are done.

Enjoy,

Jim