Early XR's XL's had problems with the stator going bad, contact baja designs or Ricky stator ( both found in the back of the d bike mags, or on the internet). It's much cheaper to get it rewound or repaired than a new and I wouldn't buy used. I would contact these people because they could give you an idea of how many of these they have repaired, they would know if your's has a high failure rate. Also try contacting people that specialize in XR's as they are very similar.