Following up from this older post:
http://www.kymcoforum.com/index.php?topic=7439.0I experienced the same problems as described in the post and tried all of the solutions suggested. No luck.
Before doing anything drastic when your scooter stalls and/or quits at random times, try loosening the gas cap as the first diagnosis.
I spent weeks trying to figure out the problem, and many emails to my dealer, his personal visit to my place to take a look, and hours of research....
Only to discover that the gas cap venting was blocked. The caps are tough to take apart so I bought a cheap cap on eBay and slapped it on.
No problemo from that point on.
Try the easy stuff first!
Carry on....
http://tinyurl.com/lxbe5un