Hi everyone I am new here. I have been working on a trx200sx that has spark issues. It will fire some times and not others. I tried drying out cdi box. it seemed like it helped but I am not sure. it would run for 15 to 20 minutes then die no spark. I put a new coil on it, it fired and ran great for about 5 min and then died. Now I am looking for ideas to get this going. Should I replace the cdi box? I hate to just keep buying parts without knowing what is bad. Does the neutral switch affect spark? the battery is dead. I am pull starting this. I have been told it could be the stator? Any info would be great! Does it run without battery? or does it need a good battery to run long term?