First, a reality check. Unlike the ubiquitous Weber DGV or IDF series (found on millions of VWs and Fords), the CR2 is a less common animal. It is typically a side-draft, twin-choke unit found on specific European performance engines from the 1970s and 80s.
Because of its relative rarity, Weber (now owned by Marelli) doesn't always keep the original "CR2" exploded diagrams on their mainstream public support portal. The "free" part of your search query tells me you don't want to pay $20 for a scanned PDF from a random reseller—and I don't blame you. weber cr2 parts manual free
If Weber has redesigned their website in the last decade, the old CR2 manual might be trapped in the digital attic of the Wayback Machine. First, a reality check
Model Overview: The Weber CR2 is a progressive two-barrel carburetor often used in OEM applications on Ford (specifically the 1.6L "Kent" engine found in Escorts and Cortinas) and various industrial engines. It is distinct from the popular DGV series because it uses a diaphragm-type secondary opening system rather than mechanical linkage. Because of its relative rarity, Weber (now owned