My 2008 Yamaha TTR-110 is running very rich.

[Samad303]

What are some ways I can fix this. Would a smaller pilot jet work?

 

[13FoxTrot]

Have you adjusted the air screw?
Is the filter clean?

 

[Yzmane]

I’m having the same problem. the air screw dosent adjust the idle at all and I hand washed my air filter and re oiled it I haven’t bought a new one.
It runs so rich there’s a little white smoke and you can smell fuel when it idles with the choke once I turn the choke off it dies because it’s so rich