Can someone tell me the cause of the pitting which can be seen (see pic) on the face of primary clutch on my 2016 1200? The Clutch has 22000 km on it.
-The pitting is only on the moving sheave, absolutely not a mark on the fixed sheave.
-The pitting is only around the middle third (mid speed section) of the moving sheave.
-The sec clutch has couple of minor divots, just a fraction of what can been seen on the pic.
-Both clutches look in good condition, no broken bolts or rollers or other items.
-There is no evidence of anything flying around in there. Belt guard and bellpan look perfect
Any suggestions on cause are appreciated.