Leaf Blowers

Sounds like it a carburetor cleaning and rebuild. Now sometimes it can just an adjustment of the carb but if the unit has a year or so of use and just started it recently then it is more likely the rebuild.

Some our fuel additives can do a real number of the rubber parts by hardening them and plugging those tiny fuel passages. I know most time everyone blames it on ethanol but I have seen even regular non-ethanol do the same. Sometimes it is what is in the fuel oil. I had one case where I had just rebuild a trimmer and a couple days went to use it for it not to work. So started checking things and fuel line was destroyed. Replace the fuel line and it did it again. Created a new batch of fuel mix with a different fuel oil and the problem went away using the same line and the same 10% ethanol gasoline.