I just put a pipe on the boys kasea, and took off the carb to look at the jets and noticed they are different. They are a round slot head but they are Fatter then mikuni and has different threads. Do anyone know what kind of jet that is? Also have another question. If i take off the oil pump, do i need to re jet as well? Will i have to go a higher jet without the pump then with the pump?

 

What type of carb? Keihin ,Oko, Mikuni , etc. If its a Mikuni , You might have gotten jets for the wrong size carb.