My outboard model is 4BR77B Serial No. B48770. It appears the BR refers to "Euro Rope Start". The last B it appears refers to it being assembled in Belgium, and Bruges Belgium is stamped on the badge. I am trying to get some parts, and was assuming I could use the Marine Engine website diagrams and part numbers for the 4R77B. However, I have noticed some differences between my engine and the 4R77B diagrams. Can anyone indicate where I might find diagrams/ parts numbers for the 4BR77B?