Where's the $%^& spark plug???

[Larry]

I want to tune up my 2009 P150.  I changed the oil (oil drain hole was not where the user's manual said it was!) and replaced the air filter.  But I can't find where the spark plug is, even after looking at the service manual pages I downloaded.  Please help.  By the way, which direction should the oil screen face?  In or out? 

[Calothrix]

On my 2005 P150 about the easiest way to access the spark plug is to lift open the seat and remove the nuts in the storage compartment and the whole seat/storage area comes out in one piece, giving you great access to the engine.  Not sure about the oil screen.