yamaha warrior 350

I have a yamaha warrior that wont start!!! I bought a new battery its getting a good clean gas flow. the only thing i can find wrong is the plug dont have a lot of fie when u pull it out. When it started acting up I was ridding and it was acting like it was running out of gas but it was full. Ive done all I can think of even cleaning the carbs and tank. It is turning over and getting gas but it wont start

[OffroadRandy]

try replacing spark plug and if it dontwork check the valve clearances and camshaft.