My father-in-law has an 83 Honda XR350 that won't run. It has sat for many years and ran before it was parked. The gas ate the o-ring on the gas tank and I have replaced that. I took apart the carburetors apart and cleaned the gunk out and got them both freed up. It has compression but I am assuming that it has no spark. Is there a troubleshooting website or chart for these motorcycles? I have never worked on a motorcycle, but have worked on just about everything else.