I know nothing about atv. I got brand new starter. Brand new battery. And brand new starter relay. I turn key have breaks on and kill switch off. I touch pliers to starter relay and give it has it starts. I let go of gas and goes off. I ride it a few mins it Goes off. What is the problem???? I'm so frustrated please help. When I try starting regularly and push start button it don't make any noise.. Just does nothing. That's why I use pliers to get it started.. Please somebody help me

 

You can ohm the start button to make sure that is the problem.
Try cleaning the carb.

 

Wait, the kill switch is in the "off" position? Or "run"? You don't know what brand or model? Is it new, used? I would check the switch to make sure it is clean and making contact inside. Check wiring as the Chinese stuff is notorious for poor routing and may have some bare wires grounding out. Same with the ground, check it is clean and functional.