Mercury Mariner 4, 5 102CC Sail 1990 Outboard Service Shop Manual, Page 88Get this manual
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Draining and Inspecting Gear Housing Lubricant 1 Remove "O IL" (fillplug (a) and "OIL LEVEL" (vent) plug (b) Let gea housing lubricant drain into lea drain pan
2 Place block wood (a) betw