I have this lil lt80 that I can not get to start. I have cleaned carb and this thing still will not start. I have made sure i'm getting gas and it is firing. I have to choke it and pump the gas for ever to get this thing to fire up. After it fires it runs great until it is shut down and the same thing again just as soon as you turn the lil thing off.

 

Welcome to the forums.
I'm thinking poor compression.