new pd18j carburetor

[eric29360]

I have a peace sports renegade 49cc scooter. I just bought a new pd18j carb for it. I put the carb on and tried to start it. It won't start. I put old carb back on and it starts fine. So i put new carb back on and it still won't start. Does the new carb come pre adjusted or do i have to set it up? I know it getting gas, it just won't start. Any help is appreciated.