2003 ST 4 Stroke 9.9/15HP Johnson outboards Service Repair Manual P/N 5005714, Page 131Get this manual
Quality of the image is intentionally reduced!
POWER UNIT CYLINDERCRANKCASEPISTON ASSEMBLY RemoveCirclip (Qty2) Piston pinConrod Piston Piston ring set
Cylinder distotion (gasketed surface)
Thickness gauge Straight edge