Hello everyone, I was just willed a 16.5 foot Starline Sierra ski boat with a 100 HP Evinrude outboard. Does anyone have any info on this boat? I am VERY new to boats and need to ask some very basic questions. First is the Evinrude XP a 2 stroke or four stroke, I noticed that it has a large oil tank in the rear of the boat. Does this mean it mixes its own oil? Is this a good strong engine? I will be starting the boat for the first time with muffs in the next couple of days and I wanna make sure I dont fry the motor. Also on the boat control below the throttle lever but above the key there is a small black unlabeled knob. Is this a ckoke, if so which way do I turn it to turn the choke up or down? Dont worry Im gonna take a squadron course below I hit the water but want to get the boat seaworthy before summer. Thanks for any help provided.