[va duc]

I would pull the cover and check that the clutch hub nut is not backing off, also inspect the clutch and components before purchasing any parts.

 

[va duc]

Getting parts for a duc is hard no matter were you are!
I would suspect that if the clutch hub is coming loose it could make that noise against the inside cover. Being a wet clutch there is a interior cover that encapsulates the clutch hub. I know that if a dry clutch hub starts to back off it wears on the cover. To my knowledge pretty much most of the 750 wet clutch bikes use the same clutch. I am not able to cross reference that part #.
I agree with you on replacing the older parts like tires. I would also change the brake and clutch fluids!
Good luck, let us know what you find.

Hi va duc,
yeah could do that but anyway by living in a country where spare parts are hard to come by I'll need one sooner or later anyway. The clutch itself works nicely it is only lately that this scrapping noise came to my ears. Like Sandpaper scrapping over metal.

I first took it for brake pads down, but nope they where still ok. I changed them anyway as I prefer HH pads and the bike stood around for at least 5 years, 500 miles in 5 years so better exchange the parts which waste away and deteriorate by standing. Tires, Brakes, Clutch comes to mind. Those brake pads saved my life already

best regards
Arnego2