I have a craftman lt 2000 and I replace the filter and fuel line and now I'm not getting fuel from the fuel tank to the motor how do I prime it and if I put a little bit of starting fluid in the carb it does run for a second but I want to know if there's a way that's I can prime it to get my fuel from the gas tank to the motor

Hi,
If you have a fuel pump, you may have connected to lines incorrectly. There should be no need to prime. On a gravity-fed system, gravity does the work. Is your fuel shutoff solenoid opening. Usually a click can be heard when the key is turned to On.
Peace,
Clarke