1997+ Mercury 35/40HP 2 Cylinder Outboards Service Manual PN 90-826148R2, Page 258Get this manual

1997+ Mercury 35/40HP 2 Cylinder Outboards Service Manual PN 90-826148R2, Page 258

Reassembly O-Ring and Seal Placement
O-Rings and Seals are part of O-Ring Kit 25-827668A1