Yamaha Blaster Problems?

Hi i recently bought a Yamaha blaster and ever since i got It it had problems. I have a new one now.It starts up on the 1st or second kick everytime. So while in netural the stator starts speeding up realllyy fast so i quickly put it in first gear idnk if thats the problem but keep reading so while riding it rides terrific. but after 2 minutes into riding to engine bogs down and shuts off. And then it wont start again as many times as I try (making sure i dont flood it) but then the next day it does start up and then it has the same problem... Help? 10pts