I just purchased a 2002 KTM 125sx, I have never ridden before and it is my first bike. I didn't get an owners manual with it so i dont know how often i should chnge the oil and any other maintinence i should do. I dont ride hard right now cause I'm just learning everything. So if any one can help me out and maybe give me some advice and what to do to improve and not kill myself it would be rad.