"Regular Maintenance" These photos describe a fit of major "regular maintenance" that I had to perform on my boat. This included four exhaust manifoled, four exhaust risers, two raw water intake pumps and two circulating pumps. What had clued me into these problems was one raw water intake pump that failed while I was near the Chesapeake Bay Bridge. Instead of paying someone to fix it I decided to do all the work myself. The more I got into it the more problems I found.