I have this sled. Mine went out too. As zimmbob said, this is a very common problem and part should be fairly cheap. Make sure you buy the updated part that mounts on the clutch guard. Probably a 1/2 hour job for just about anyone. The original regulator is buried and very time consuming to replace. You just unplug the old one and leave it in place.
This is another one of those parts on that sled that Polaris upgraded (carb boots, early IQ bumpers, etc.) but should have recalled - mine screwed up a trip.