2006 Johnson SD 30 HP 4 Stroke Outboards Service Manual, PN 5006592, Page 61Get this manual
MAINTENANCE ENGINE OIL AND FILTER
ENGINE OIL AND FILTER
Checking the Engine Oil Level
IMPORTANT: Check the engine oil level before
every usePlace the engine upright on level surfaceRemove the top engine coverRemove the oil level dipstick and wipe it with clean ragThen insert the dipstick completely into the dipstick hole and remove it
Changing the Engine Oil and Filter
IMPORTANT: Whenever the engine oil filter is
being replaced, change the engine oil at the same timeThe engine oil should be changed while the engine is warm
Draining
Place the engine upright on level surfaceRemove the top engine coverRemove the oil filler cap