[Espeefan]

If I'm reading you correctly, you stripped the threaded hole on the motor? Short of drilling and tapping the holes to the next size up, I'd say there is no easy fix. Even that would be unlikely, as the holes in the motor cans are extruded, so drilling to the next size up may not leave enough material to cut the new threads anyway. Then you'd have to drill the hole in the pump larger too. Just get a new motor.