Try to measure the voltage on the battery terminals while the engine is running. My XT-200 6V bike uses half wave rectifier which does not give a "true" DC reading when measured on the charging wires only.
I added the following to your DropBox;
Honda XR250 Tornado Parts catalog
Honda XR250 Tornado owner's manual
Honda common service manual
I e-mailed you a link to download the Honda XR250 Tornado Service manual.
Let me know when you're done so I can remove it.
This is all I can help you with at...
I have also uploaded a few to your DropBox. Nice to have it all in one place :thumleft:
Yamaha XT660Z Tenere service and owners manuals.
Honda XR250 workshop and service manuals.