Mercury Mariner V-250 V-275 Outboard Service Shop Manual 1990, Page 118Get this manual

Mercury Mariner V-250 V-275 Outboard Service Shop Manual 1990, Page 118

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48 Rem ove nuts from aft bottom side of powerhead 50 Rem ove bolts from oil pump and remove oil pump assembly from block
a Nuts (2 Each) Exhaust Extension Plate

aCheck Vallie