Thanks for the trip down memory lane.
I was about 15 when we got ours, (my cousin and I).
I was so anxious to use it. My cousin already had it on the boat all I had to do was prime the tank and I was off to the races.
I found out later he filled the tank but didnt put oil in it. Thats when we set the rule, never fill a tank and not mix the oil -EVER!
Amazingly I didnt seem to harm the engine??