How do you check the stator on a 1993 ktm 250?

Get an Ammeter and check continuity on the wires where they connect to the discus. If it reads 00.0000 or 99.9999, it means the stator is open or broken and needs to be replaced. If it reads a more exact number, find the limitations to determine if its the problem. If its not, check the wires at the ends. If those read 0's or 9's, the wires are broken and may need a simple repair. If those aren't the problem, then its in the coil or voltage regulator