2005 Yamaha Raptor 350 sputters after warmed up.

[Cheese]

I have a 2005 raptor 350. Runs great when cold but after you ride for a little while it starts to bogg or sputter when you give it the throttel. Any help on this would be awesome. I have replaced spark plug, air filter, fuel filter and no help. Thank ya guys. 

[Stitch196369]

Hows your fuel air mixture

[Cheese]

Not really sure I haven't got to try it yet. I don't know where the screw is or where to start on it. It runs really great then about 15 min into riding it is when it starts acting up. I really appreciate your help. 

[Stitch196369]

If and when you find that screw I would turn it all the way in while counting the turns. Don't turn in too tight just bottom it out. Start by turning the screw out 1-3/4 turns then start it. From there you can turn it out 1/4 turn at a time till you get a perfect running motor. 

[Cheese]

I'll try that. Thank you. 

[BackyardTom]

I have a 2005 350 raptor. My best guess it's clean or rebuild the carb

[Cheese]

Yeah I have the carb apart now and am gonna start cleaning it this week. Only thing I can think of. Thank you 

[Ajmboy]

Topic moved to Yamaha ATV forum and full ATV info added to topic title. 😉