I've had my 2020 800 trail since new and its been very dependable. Recently lent it to a friend and it lost drive. So I towed it home and finally had a chance to check it out today. Apparently the primary clutch nut backed off. This allowed the belt to slip equaling no drive. I'm looking for part numbers for a few specific parts that probably aren't common to replace. I need this sheetmetal piece thats held in the belt cover with a phillips screw, and possibly the bearing and washer retained by that piece. I think the threads on the shaft and nut are good to reuse. Would anyone happen to know the thread size and pitch? Maybe get a tap/die to clean up the threads. I'll ry to post some pics to explain what I'm working with.

[2015 Z Force 800 53/Trail EPS]

Something to check closely is the splines on the shaft and the cam plate. Usually when that retainer comes loose because of not being installed with the correct torque and thread locker, it allows the cam plate to shred the splines on either or both of the shaft and the plate. Both can be replaced but the shaft is a PITA as the main CVT cover has to come off. The part number of the cover bearing, seal and retainer are in the last pic.