[Flip]

The big seal behind the clutch drum went on my 1997 900 not long after I bought the bike (in late 1999) from my mate who put less than a thousand miles on it in two years- an adage to Ducati's don't like being laid up without being used.

If I remember correctly Ducati say it can't be removed without splitting the cases but good ol' Haynes say otherwise and I employed their method of carefully removing it by edging round it with a thin flat screwdriver and fitting the new one with a suitable sized socket as a drift.

Over the years I've replaced the O rings on the push rod a couple of times and the bearings in the pressure plate (just for peace of mind while doing other jobs) and never had an issue with any of them since.