Mercury Mariner 25HP 4-Stroke Outboard Service Manual 1997, Page 144Get this manual

Mercury Mariner 25HP 4-Stroke Outboard Service Manual 1997, Page 144

Rocker Arm Shaft Assembly 1Apply engine oil to the rocker shaft and arms
Cylinder Head Gasket
1Install cylinder head gasket and dowel pins
2Locate the end of the rocker shaft that gets
installed towards driven gear (oil holes wi ll lineup with the mating oil holes in the cylinder head)3Slide the rocker arms onto rocker shaft as shownFr;

aRocker ShaftRocker Arms

Cylinder Head Installation
1Apply engine oil to the threads of each bolt and