Small Engine Troubleshooting Problems? Ask a Mechanic Now.
Welcome to JUST ANSWER small engines, let me try to help you !! I don't know it all, but maybe together we can get you a satisfactory answer!
Good flow of fuel from tank to the carburetor? Have you removed carburetor float bowl for debris and water? Is the needle valve passage from fuel inlet, thru the needle valve passage open with no debris in the passage?
I'm not sure heat has anything to do with it, more likely a buildup of trash in fuel system.
Shaft driven deck would have a slip joint on drive shaft. Why do you want deck off?
It should come off easily.
Tube is a vent hose, is there a place for a tube in the air cleaner base?
If you blow into the tube. is it open, or plugged. If open, it at least needs to be be capped.
then it should be plugged, as dirt can enter the carburetor, and engine.
What is the model number off the engine, example(###) ###-####B1
From service manaul/