There was a later, white model (I think 11 cubic inch and much smaller) that was 9.8 hp too, but I think that’s when they changed the designation to “110,” instead of “100.” Dave could be right because I think the last rendition of the Merc 100 auto tranny WAS in fact, designated 9.8 hp. Questions: What does it say to the left of the serial number? That’s where the model number should be, at least for the midsection. Now I might be wrong but I looked at THREE of my Merc 150s and the power heads all say “rocket” on the starboard side. I believe the 100s say the same thing. So in my mind, if you’re lucky, it could be a 150, too, unless I am missing something. What’s the carb number” That might help, depending on what year. (The 150 had four reeds per cylinder.)
Long live American manufacturing!
