Scooter takes 4 tries before starting?

[Rhompin45]

Has it always been this way? It might just need the carb tuned. That is one thing I don't know much about but I know there is a needle placement that can be adjusted up or down. And to be honest I'm not even sure If it adjusts the fuel or air... And there is the air /fuel ratio screw. Or depending on where the scooter came from maybe wrong pilot jet size. But I would guess the latter is the least likely. Sorry I can't help much. I need to do more reading on them.