2003 Johnson ST 6/8 HP 4 Stroke Outboards Service Manual, PN 5005471, Page 139Get this manual
POWERHEAD DISASSEMBLYHP Remove four screws retaining the cylinder head coverRemove cover and O-ring sealDiscard sealRemove and discard O-rings from dowel pins in cylinder blockRemove and replace dowel pins, if necessary
1Screws
1Dowel pins
IMPORTANT: Cylinder head screws are different lengthsMake note to ensure correct installation during reassemblyRemove six screws retaining cylinder head to cylinder blockTap on the head with plastic or leather malletRemove head and discard gasket