Two years ago I took my 2013 550xp to have fixed, it wasn't idling or going full power. I took it to a chainsaw repair shop, the chainsaw guy took it apart and said one of both seals are gone and possibly bearings on crankshaft needs to be replaced, labor and parts was going to be $300.00+.
So I guess when splitting a saw it gets expensive putting it back together. The saw guy wouldn't give me a nickel for it in a trade-in so I sold it on ebay and bought a new 550xp, somewhere else for $75.00 less then what he wanted, maybe I should've brought it out to you that weekend while I was out riding around..........
I remember reading that here.