HELP! hi my names Luke and ive just joined this site

Heres a picture of my scooter its a Generic XOR 125 4 stroke, im having problems with it at the moment however, when the bike is started it seems to get hot very quickly the exhaust is untouchable, it hasnt got any silencer on at the moment as i am waiting on the arrival of a new one, it is air cooled and there is nothing blocking the air getting through the airbox into the carb, could anyone give me any pointers as i need it fixing asap! thanks Luke