I am having problems getting my little sisters TRX 90 started. It is not turning over at all. I have pulled the carb and cleaned it. Put a new spark plug in it, and flushed the old gas out of it. It is getting spark and the engine is not locked up. Is there any advise anyone can give me!!!

 

Try adjusting the intake valve, ive heard that if the intake valve is stiff then it will make the bike hard to start when it is cold.
Thats the only thing that I can think of.