Transmission

[tfitz66]

Need help with diagnosing the problem with my Lifan 125cc jumping out of second gear. Second is the only gear it does it in. Is there a shift lever out of whack causing it going from first past neutral into second? It wil even do it coming down from third. Help, please!

[skadamo]

Hey tfitz66, welcome to the site.  Sorry to hear about your problem.

Found this...
http://www.miniriders.com.au/forum/tech-talk/11101-transmission-issues-lifan-100cc.html

Ive got a 125 lifan motor thats pretty fresh as well and it likes to pop out of second. I have been told to wait for the gears to start lapping onto each other first before stressing about it. It seems to be a good reason to buy an all up bike though they dont seem to have the trouble. mine 1 down 3 up.

Is you bike new?  How many hours/miles do you have on it?