2006 Johnson SD 30 HP 4 Stroke Outboards Service Manual, PN 5006592, Page 152Get this manual
POWERHEAD PISTON, CYLINDER, AND CRANKSHAFT Remove connecting rod cap nuts and the connecting rod caps
IMPORTANT: To prevent damage to the piston rings, remove any carbon deposits from the top of the cylinder bore wall before removing the pistonUse quick drying paint to mark the corresponding cylinder number on each pistonPush out each piston and connecting rod through the top of the cylinder boreReassemble each connecting rod cap and nut onto its original connecting rod
1Connecting rod cap (3)