Mercury Mariner 4 and 5HP 4-Stroke Outboards Service Shop Manual 1999, Page 162Get this manual
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CYLINDER BLOCK AND CRANKCASE
CGasketCylinder HeadWasherPlace on CrankshaftM8 40 mm Bolt with Washers (6)M6 40 mm Bolt with Washers (3)
Oil Pan Bolt Torque
M8 40 mm Bolt