Right turn motor replaced with left turn-

[mqandmq]

Several years ago my Father had Gateway Marina in NJ install a new Yamaha 200 hp outboard on his Overnighter 20 when the Mercury 200 died. The motor was a 1996 leftover that they installed in 1998. From day one with the new Yamaha the boat listed to starboard to the point that you had to hold on tight and lean your body hard to port. The dealer said it was not their problem :bang and that my Dad should adjust the anode. They took his money (he paid them in green cash) and left him to rot. The Mercury 200 ran flat with no list. This was my parent's first powerboat and they had no idea what the problem was. They gave it to the "professionals" and left it at that.
Fast foreward 13 years and the boat and motor are now mine. The motor has low hours and runs like a top. The boat is solid as a rock and still looks nice but it leans hard to starboard when under power. The motor is a "Left" turn. The batteries and operator are on the right. Is there a way to correct this lean with a foil or trim tab set-up? Any help or ideas would be greatly appreciated.

Thanks---

 

[ctcbtr]

Trim tabs will take out port and stbd list when running

 

[grady23]

The torque tab on the lower unit probably needs adjustment. Remove the rubber stopper from the top of the lower unit to expose the bolt that locks/mounts the torque tab and loosen it a turn or two. Turn the tab 2 marks to the left --- Yes LEFT of the center mark-- and lock the bolt down again. Replace the rubber stopper and test drive the boat. Also -- Be sure that the motor is trimmed up when running. This is something you'll need to do and get the feel for where the "sweet spot" is. Once the tab is adjusted, it should stop the list and also keep the boat from wanting to turn or list on it's own. Make sure the motor isn't trimmed up TOO HIGH as that will make the boat un-stable also.
In the future -- Don't pay for work UNTIL you sea-trail the boat.

I am assuming that the motor that was installed as a replacement is centered left-to right and mounted in the same holes or VERY close to the original mounting holes.