So, last year I bought a Troy-Bilt Storm 2840 snow blower from Lowes. The new ones no longer had Tacumseh US engines. They now have Powermore Chinese engines. As you know, we had one major storm only here, 28", so I used it once. I ran out all the gas, so it wouldn't gum things up. I put some Stabil gas treatment in too. I didn't drain the carburetor, because it didn't say ya had to. This season, I pulled, nothing. It isn't the spark plug because I used the electric ignition with an extension cord, and still nothing. I am reasonably sure it is a jam in the carb jet. I removed the carb bowl and float and they are immaculate. Today, I will remove and spray the jet with carb cleaner and probe it to remove any jam. There is a YouTube video that covers this, if you have the same problem: Removing the carb is a PITA. Follow his instructions to do it without a hitch.