mpescatori wrote on 12/31/69 at 16:00:03:???
An educated guess from someone who's never taken apart his own engine...
Could it be the oil relief overpressure valve? (the one that sends excess oil back to the sump)
Maurizio
It looks like a spring loaded camlock fastener, works almost like a cufflink. Can't say is it not being used by Suzuki, but fasteners like that are used to hold a lid or a cover closed. I'd hang on to it, if I found where it went then install it. If not and I found another use, then put it to use.
It is definitely not an oil relief overpressure valve.
Laters, George (HPT)