This is may be a Weed Eater or Poulan brand since these two and perhaps others used that name. I assume you are asking about a gasoline powered trimmer? They are all very similar in that they have small engines with very small passages through the carburetor. The usual problem is fuel. Either there is none because gasoline gums up those small passages because of improper maintenance and storage with fuel in or there could be too much fuel from attempts at starting by pressing the primer bulb too many times. Take the spark plug out. If it appears to be wet the problem is too much fuel. Replacing the plug with a new one is the best solution, then try starting it again. If the plug is dry you will need to have the carburetor cleaned. This is a job for a professional or a do-it-yourselfer with a lot of time on his hands.
Turn counterclockwise.
Yes it can. I've done it when I hurt my back and couldn't start them normally. Just take the recoil off and get the right size socket. Make sure the socket will come off easily or when the weedeater starts it will turn faster than the drill and may hurt you.
Does it turn over??
stick a flat head screw driver in the slot above head and turn counter clock wise.
You need to put a key in the ignition and turn it.
Check the battery and the connections to the engine.
You did not teach it the trick very good.
A Rash, Hives, Or an Infection.
If it does it when you turn the key and the engine does not turn over, it is a weak battery or possibly a loose connection on the cables.
It's a relay. Which one it depends... I would start from testing headlights relay.
The battery & the starter turn the engine via the flywheel, but has nothing to do with wether or not ignition itself is functional. Verify is firing.
On most of them you hold the top part with one hand and turn the bummer/spool clockwise (looking from the top)and pull it straight down/outward