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Oil capacity, color codes, frame codes, conversions of units, identifications, valves, camshaft, bearings, and all that sort of things. French language but easy understanding.

At this point I must thank Dave Richardson and his Guzzist Bible "Guzziology", which he now publishes via Amazon.
Thanks also to Francesco, to whom I owe the origin of these tables.

The link above is to the French part of the site