That number is all over the place and as far as I can tell it's because parts manual 065034 says "Covering "850" and "750" models after engine number 212278" and it includes Interstate parts. But then, parts manual 065034 (Probably 1972) also shows Interstate parts and appears to be a earlier manual covering only 750s. Parts manual 101/71 does not include Interstate parts and appears to cover 1971.I bought a copy (at the third attempt) various errors and omissions spotted so far such as 212978 being the first Interstate (page 195). I've also seen 212278 in various books listed as first Interstate that is also incorrect.
No, just follow the link.....Do you need to be a member of the NOC to buy a copy ?