03 sportsman 90kickin my a**!

actually,its whippin me and my wallet.
I hope somebody can help,Ive done search after search and I’m drawing blanks.Here’s the story:03 sportsman 90 ,has new battery,new stator,cdi box,starter relay,plug,carb,plug wire.Bike wont start! It has always run good,until one day it died and wont start.It turns over ,and has spark.
Ive tried jump starting it,nothing.Starter fluid,nothing. Im lost!Ive pulled the kill switch,it shuts off spark,and when plug the kill switch in,it sparks.So I know it’s doing it’s job.The left brake lever is doing it’s job,too.

I’m totally lost at this point.

ps.I’m not a mechanic,have limited tools.No volt/amp testers either,and I wouldn’t know how to read them anyway. please help