Mercury Mariner Service Manual 6, 8, 9.9 210CC Sailpower, Page 102Get this manual
2Remove nut (a)thrust hubs (b)and propeller (c) DRAINING and INSPECTING GEAR HOUSING LUBRICANT
1Place gear housing over clean panand remove screws (with gaskets) (a)2Inspect gear lubricant for metal particlesPresence of small amount of fine metal particles (resembling powder) indicates normal wea rPresence of larger particles (or large quantity of fi ne particles) indicates need for gear housing disassemblyand component inspection 3Note the color of gear lubricantWhite cream color indicates presence of water in lubricant4Check drain pan for water separation from lubricantPresence of water in gear lubricant indicates the need for disassembly, and inspection of oil seals, seal surfaces"0rings, and gear housing components