With the cap off, place a large oil drain pan under the motor, raise all up, fill with ATF oil, lower trim. Repeat till clean ATF oil comes out. Have had to do this many times. Found that Yamaha doesn`t like the heavy tilt and trim oil. Causes it to sound like it has air in the system, especially in cold weather.
The world will not be destroyed by those who do evil, but by those who watch them without doing anything. Remember what He has done and remember that He is not done yet!-- GOD IS GOOD