My buddy just bought boat with a Merc 90HP and can't find the tag which states the year. The serial # is OB229150. He would like to get a manual and check/change whatever needs attended to before he puts it in the water. Not sure if anyone can help him out with the year, where to get a manual and a list of things that need to be checked, but all is appreciated. Additionally, does anyone have a suggestion for a good source for a mooring cover for this motor? Thanks again.