2005 SO Johnson 4 Stroke 9.9-15HP Outboards Service Manual, Page 51Get this manual
MAINTENANCE LUBRICATION
LUBRICATION
Engine Oil
Refer to INSPECTION AND MAINTENANCE SCHEDULE on p46 for oil change schedule
Install new gasket and oil drain plugTighten plug to 114 inIbs(13 Nm)
IMPORTANT: Do
not re-use gasket removedAlways use new gasket
IMPORTANT: Engine oil should be changed
while engine is warm Place outboard upright on level surfaceRemove the oil filler cap
Pour recommended oil into oil filler openingthen install filler cap