2004 SR Johnson 2 Stroke 9.9, 15, 25, 30 HP Outboards Service Manual, Page 188Get this manual
POWERHEAD DISASSEMBLY9.915 IMPORTANT: Remove the lower main bearing only if it needs to be replacedUse external retaining ring pliers to remove the lower bearing retaining ring and bearing separator to support the bearingPlace the separator flats against the bearing and press the crankshaft from the bearingRotate the powerhead so the cylinder head faces upRemove the cylinder head and gently push up on the connecting rods to remove number and number piston assembliesUse Retaining Ring Pliers or equivalent to remove wrist pin retaining ringsDiscard the rings IMPORTANT: Protect the condition of the piston
by packing paper towels between the connecting rod and pistonDo not allow the connecting rod to contact the inside of the piston skirt during handlingRemove the piston rings using an appropriate ring expanderDO NOT try to save the ringsInstall complete set of new rings at reassembly