2006 Johnson SD 30 HP 4 Stroke Outboards Service Manual, PN 5006592, Page 184Get this manual
MIDSECTION EXHAUST HOUSING AND OIL PAN Remove the oil relief valveRemove the water tube from the exhaust housing
1Oil relief valve
1Water tube
Use an oil seal remover to remove the driveshaft oil seal from the engine holder
Remove two (2) bolts, the valve cover, and the water pressure valveOil seal