2001 Mercury Mariner 50-60HP Factory Service Manual, Page 217Get this manual
CYLINDER HEAD
Cylinder Head Disassembly
Valve Cover Removal
NOTE: Remove flywheel cover as noted in previous pages1Disconnect spark plug leads and remove spark plugs2Disconnect the breather hose and fuel output hoseIMPORTANT: The hose fittings on the fuel pump can break if you try twisting or pulling off the hosesRemove hoses by slowly prying off the hoses using small screwdriver3Disconnect the top fuel hose from the fuel pump4Remove valve cover