2006 Johnson SD 30 HP 4 Stroke Outboards Service Manual, PN 5006592, Page 165Get this manual
POWERHEAD PISTON, CYLINDER, AND CRANKSHAFT
Installation
IMPORTANT: Before installing the pistons and the crankshaft, inspect and service the componentsRefer to "Inspection and Servicing" on page 152IMPORTANT: If the original components are not replaced, each piston, wrist pin, connecting rod, and connecting rod cap must be assembled and installed in its original order and positionApply engine oil to the wrist pin and the pin bore in the connecting rodInsert the wrist pin through the piston and the connecting rodInstall new retaining rings to secure the wrist pin
Apply engine oil to the oil ring Install the spacer to the piston, then the side rails2