Ruggerini were taken over by Lombardini engines who then closed the Ruggerini plant. Ruggerini engines are now re-badged Lombardini engines.
Should you have a Ruggerini, which were excellent little engines, then parts are very very hard to come by.
I am currently sat in Wells harbour trying to track down parts to rebuild the FW cooling pump, no full pumps available, this is proving to be a nightmare task.
Henderson Engineering of Hampshire Tel : 01264 336783 or email@example.com are proving very helpful