What is mechanically wrong with my KYMCO 50 mini 49cc

Question

My 50 just started acting up on me. one day I can ride it around town,have plenty of zip (45mph) and starts everytime. Next time I use it, It starts OK, but after about a mile at 30-35 mph it will just go dead. The starter will turn and the lights work (just put a new battery in) but there is no fire. I carry a BIG chain and padlock with me always, so when this happens, I chain it up and hoof it back home to get my truck. By the time I get back to the bike (about 30 minutes) it starts right up! Sometimes it will run a mile or so and do it all over again. Got any ideas (and don't say get rid of it and drive the truck lol.)

Answer 1

Gas cap may not be venting.

The weed eater digg's show stupidity.

Answer 2

Have you over filled it much  sounds like a gas cap venting  problem. There may be a ball   valve near were    the draining around the fuel opening is . By pass the valve see if that fixes it. The  valve will rattle when shaken. Also make sure your not pinching a vacuum line in there. Which model do you have.

Answer 3

Once and a while you gotta replace the string on the cutting head.