I have a Yamaha Raptor 350. I have been having some problems for a while now. The problem is my quad stops working at random times. Sometimes its right at the beginning, and wont even start, and other times (majority) it could be 30 minutes into the ride, and quite while riding. The quad is very random of when it stops working, and there is no pattern.

Heres what I've tried so far:
Cleaned out gas tank
Cleaned and checked the carburetor
Got a new gas connector/valve
Done a brief look over everything

Any ideas of what I else I should try? I have new Engine, New carburetor. Im not sure whats wrong, anything will help, thanks

 

Because nobody posted any help, I brought it into the shop. They said it was good I replaced the gas valve. Then they had to clean the carburetor again, and the main thing is the air tube on the top of the carburetor was leaking. They got a new one and tightened it. That what you need to do for those of you who have this problem