Hey all so I just bought a brand used 2021 tracker 1648 SC with a 9.9 remote mercury. The guy I bought from said he had only taken it out a few times and doesn't think he put more then about 10-15 hours on it. Which I'm inclined to agree with the condition it is in. I put about 3 hours on the motor and can say that it has no issues what so ever. I did do the 15 hp carb upgrade which took the top speed from 6.8 to 7.2 mph. Anyway I wound up buying a merc 40 hp CT . So I no longer have any need for the 9.9 motor is located in 20711.