2003 Johnson ST 6/8 HP 4 Stroke Outboards Service Manual, PN 5005471, Page 142Get this manual
POWERHEAD DISASSEMBLYHP Using Retaining Ring Pliers, or equivalent, remove the wrist pin retaining ringsDiscard the ringsAlign rocker arms to unloaded position by rotating camshaft until pad rests on the base diameter of camUse the cam pulley screw and washer installed in the end of cam to rotate
The fit between the wrist pin to piston bosses is loose on both sidesUse Wrist Pin Removerllnstaller, PIN 342657, to tap pin out of piston