The mid shaft brg needs about 3 good pumps of a good grade of marine grease. Once a season or every 30 hrs or so if you ride a lot.
The super charger I know they've had clutch issues. To the best of my knowledge they upgraded the clutches to resolve it. As for lubrication. I really can't help you much, but would think there sealed brgs that need no service till they reach there service interval. But again, not sure.