i bought my kazuma 50 from raceway and i must say i'm very happy with the quad and the service. john is great to deal with. after reading some threads, i just wanted to let you 50 owners know of a slight problem i experienced along with maybe some other people. if your quad begins to run bad or shut off after its wrmed up, check the choke lever. after being ridden, the bumps and jolts would slowly raise the choke lever up causing it to loose power and run bad. i just wired it down...problem solved. other than that, i have had no problems whatsoever. my son ran it all day at the pee-wee track at rausch creek, pa with no problems. i was very impressed.

 

Just wanted you to know that i had the same problem with my son's 50 (among many other problems). Using a piece of wire could work well, but there's a nut on the back side of the armature for the choke lever. If you remove the seat, you can reach it with a nut driver to tighten up on it.
Thanks,
Mark