Motorcycle Repair: RevTech 100 engine, piston ring, wrist pin

Question
I know this question is related to other than Harley but, I believe RevTech engine are similar in construction. There is oil shooting out the front exhaust pipe and it does not appear to running properly. Any ideas as to the problem?

Thanks

Answer
Oil coming out a pipe is related to two things. Either you have oil getting around the valve guide or a bad piston. You could have a broken piston ring or a wrist pin keeper has broken and the wrinst pin is cutting into the cylinder. What you are going ot hae to do is remove the head and cylinder and do an inspection.
Good luck and happy riding
Mike