So I bought this today I dont know what it is (guy said it was a 125) its pretty beat must have been left out side or somthing but it runs for like 30 seconds then shuts off but still revs, probably a fuel problem, and also theres a chip in the case by the left foot peg, oil comes out of it but the hole is only like 10mm but for $50 what do you expect anybody have suggestions on how to fixs this?

