KPR 200 stalls and loses power when riding
 

Does anyone else have a problem with their bike stalling and losing power while riding? Do you know what causes this! Valves have been adjusted and plenty of fuel! Oil was changed at break in and again at 300 miles!:hmm::hmm: Have only 534 mile as of date,

How did it run after the valve adjustment and how many miles ago did you adjust them? I can’t say that I’ve ever experienced that with this engine but if it was mine the first thing I would do is check compression. You should have between 170- 195 psi most likely. If you have low compression then revisit your valve adjustment.