1995 Mariner Mercury Outboards Service Manual 50HP 4-Stroke, Page 108Get this manual
Timing Belt Inspection Replace timing belt if any of the following conditions are found: Cracks in the back of the belt or in the base of the belt teethExcessive wear at the roots of the cogsRubber portion swollen by oilBelt surfaces roughenedSigns of wear on edges or outer surfaces of beltRemove flywheel using puller (91-83164M)
Timing Belt Removal
30025Flywheel Puller (91-83164M)
Engine could possibly start when turning flywheel during removal and installationTo prevent this type of accidental engine starting and possible serious injury, always remove spark plug leads from spark plugs1Disconnect spark plug leads from spark plugsRemove the stator