2001 Mercury Mariner 50-60HP Factory Service Manual, Page 252Get this manual

2001 Mercury Mariner 50-60HP Factory Service Manual, Page 252

CYLINDER BLOCKCRANKCASE
Powerhead Removal
WARNING
The possibility exists that the engine could start when turning the flywheelTo avoid possible serious injury, always disconnect the battery and remove spark plug leads from spark plugs before working on motor1On electric start models, disconnect the battery cables from the batteryRemove battery cables from engine2Disconnect the power trim wires (if so equipped)3Remove the bottom cowls