The PO of my 750KO changed out the original KO carbs years ago because he said he could never get the bike to run right with them. The stamp #on the current carb. system is 657b which is the dual push, pull cable set up. I think the 657b carbs came on the K2's. The main jets are 105 and I think this is the stock jets for these carbs. Weren't the stock jets for the stock carbs on the 70KO 120? Should I change the current carb jetting from 105 to 120. How would it affect the running, good, or bad?
