Mercury Mariner Outboards 2.2 / 2.5 / 3.0 Service Shop Manual, Page 40Get this manual
Removing Engine Components and Engine Removal 1Remove cowling from engine2Remove spark plug lead from spark plug 3Remove rewind starter, flywheelmagneto base assembly and ignition coil as described in Section 24Drain fuel from engine mounted fuel tank5Remove fuel tank, fuel shut-off valve and carburetor from engine as described in Section 36Remove bolts (a) which secure powerhead to drives haft housing7Lift up on powerhead to break gasket between powerhead and driveshaft housing Lift powerhead from driveshaft housing