Husqvarna 128LD FIXED!
Tell u what this has been a fun little nightmare.
First: put fresh mixed gas in, pulled plug cleaned with wire brush and replaced.. primed, pulled, fired right up for a few seconds then buuuggghhhh. Bogged out. That's when the fun began.
Next: picked up a new plug that evening while I was in Wallyworld. Next morning installed new plug checked air filter (it was pretty gnarly but got it cleaned up enough that maybe it would stay running. Nope!
Now I'm tired of messing around so I pull carb, break everything down, clean with carb cleaner, reassemble, replace fuel lines, fuel filter, picked up new air filter from Lowes, can of Husqvarna 50:1 premix fuel, checked exhaust screen, put everything back together and same thing.
At this point I was teetering between actually listening to my wife and just blowing $200 on a new one.. or giving it one more shot. And I'm not giving her the satisfaction of "i told ya so" lol. Last ditch effort...replaced the spark plug...and that did it! Turns out there is an odd problem. Make sure that you have a resistor type plug installed. The electric field generated by a non-resistor plug can interfere with the ignition and emulate a stop signal to the trimmer when it's wide open. Never knew that before. Hope that helps! Oh, and I have less than $30 invested and it runs like a beast.