How to disassemble the throttle/trigger assembly on at Husqvarna 150BT blower.

Any 2 cycle engine must have 90 PSI or higher to run. Typically a new engine will read around 100 - 120 PSI with Gage on and pulling rope 3-4 times.

Aeration in tank other problem can also maybe L H adjustment
How to Adjust Small Two Stroke Carburetor

Kill switch most likely has broken wire between switch and engine. When in "kill" position, it should connect the top of the sparkplug to the rest of the engine. If it doesn't, either the switch is bad or the wire is.

open gas cap and see if it will run again. m,any times the gas tank vents clog and the engine can't draw gas after a few minutes.
another thought is the oil mixture.. 50:1 with oil made for air cooled engines....not boat engine oil

Pull the muffler and look for scoring on the piston. I think you cooked it my friend. You may have a bad coil or fuel cap, but it's more likely you ran the mix too lean.

Spray some starting fluid into the open throttle and see if it instantly fires. If so, it is fuel or lines, filter, quality, quantity. Water in the fuel, many other factors can play a part. If it won't start with fluid, then the ignition is your weak link. If it is a champion plug, toss it. A wet plug won't fire either, even with gas.
More than likely, it is fuel delivery... still starting fluid is #1 tool.

turn it on, add fuel, prime carb, set choke and start... usually like that it works unless you primed it and flooded the engine

They are refering to the 'fuel primer bubble' located on the bottom of the carb.

Hair dryer on carb.

sounds as though you need to install a new kit in the carb or try adjusting the carb