2001 Mercury Mariner 50-60HP Factory Service Manual, Page 283Get this manual
CYLINDER BLOCKCRANKCASE
4Reconnect hosesUse sta-straps to fasten all hose connections
aVent HoseBreather HoseFuel Hose (In)Fuel Hose (Out) 5Reconnect the power trim harness wires6Install spark plugs 7Install bottom cowlTighten bolts to specified torque