Mercury Mariner Outboards 2.2 / 2.5 / 3.0 Service Shop Manual, Page 57Get this manual

Mercury Mariner Outboards 2.2 / 2.5 / 3.0 Service Shop Manual, Page 57

cCheck drain pan for water separation from lubri cantPresence of water in gear lubricant indicates the need for disassembly, and inspection of oil seals, seal surfaces, a-ring, and gear housing components 5Lift cover (a) from shaftInspect surface of cover that contacts impellerReplace if worn