2005 yamaha 350 won't stay running help please

[JacobL]

I cleaned the carb took it a part let it set for 3 hours And I put it back in and was leaking gas out the overflow tube fixed that now it starts but only with choke on and runs rough turn the choke off it dies idk what it is 

[spock58]

My guess is a plugged low speed (aka pilot) jet. It's very small and needs to be removed, cleaned with a strong carb cleaning chemical & hit with compressed air. Replacing them is sometimes the best bet.

[Gwbarm]

My guess as well ! Sometimes they are hidden and easy to overlook when cleaning,  Which carb OEM or aftermarket. The only thing I like to do also is take the emulsion tube out that runs from Venturi to main jet, they get dirty, if it won't come out use something like Berryman carb cleaner in an ultrasonic for about 20 minutes that should clean it well enough.

[Mech]

You might have an air/vacuum leak between the engine and the carby..  If it's a rubber manifold the carby fits into with a hose clamp check the rubber for splits. If it's a metal manifold there will be an "O" ring between it and the carby.. check it's still there and not old and flattened.

Also check any breather hoses are on the right places.