Bullie, you are correct! I got my years mixed up 🙁
Yours has the little metal scoop that receives water from the propeller and the forward motion of the boat. As stated before it cools off the base of the motor and the exhaust leg of the motor to prevent radiating heat from over heating the powerhead.
Use two cycle air cooled oil for your motor. Stihl makes a great oil product. 16:1 ratio is a must.
Art S (an awesome member) who used to supply excellent advice and information on these little motors past away a little more than a year back. Even though he has pasted, his work, videos, and complied information still helps and educates us today. God Bless you Art!!!
Here is a you tube video of the evolution of your motor.