2001 Polaris Trail Boss 325 Idle Problem

Hey guys I have a 2001 Trail Boss 325 that’s having a few issues. For one, the bike has been used very few times lately and has been subject to a clean up for the carburetor. I turn on the motorcycle and it roars great, but once i take my finger off the throttle, it dies. I was wondering what the fuel bowl level should be (often referred to as a reservoir) and if the needle’s seat has a specific adjustment. I’m sure the bike is lacking fuel, as I don’t see any overflow of gas coming out of the escape lines. Any thoughts? Thanks. Also, the fuel lines were replaced with newer ones, so those can’t be the issue. I know there’s a bolt with a spring (almost resembling a corkscrew) that can be adjusted to increase or decrease acceleration…it works hand in hand with the handle throttle. Thanks!