MarvinGabriel
Petty Officer 3rd Class
- Joined
- May 5, 2020
- Messages
- 83
Hello. I've been trying to find an online parts manual for the Mercury 9.9 4 stroke, and the 15HP 4 stroke. I'm trying to identify the parts differences between the two, for a conversion. I know that the carb is different, but suspect I need to change exhaust porting as well. They're both 323cc engines, so I'm sure the engine will work fine. Just need to open up the input and output of the airflow...