Mercury Mariner V-250 V-275 Outboard Service Shop Manual 1990, Page 109Get this manual

Mercury Mariner V-250 V-275 Outboard Service Shop Manual 1990, Page 109

9Disconnect remote oil tank hoses from engine 11 Remove nuts and lockwashersthree each sidefrom base of power headRemove bolt from exhaust adaptor
a-Oil Tank Hose (Inlet)Nut and Lockwasher (3 Each Side)

12Remove wing nuts from ftywheel remove cover