How to tell when engine coupler on my boat is bad .?

Question

iremoved out drive this past week when i tried to install alignment tool was way off. i finally got engine aligned, well now boat vibrates real bad . is it possible that my engine coupler is bad. i removed coupler but i dont know how to tell if it is bad.the motor is a omc v 6 and the out drive is a omc cobra. any heop would be great.thanks john

Answer 1

Do you mean the U-joint? Yeah, that could be bad.

Did you replace the gimbal bearing when the outdrive was off? That bearing could be bad.

Also, your alignment could be bad. When we put my boat back together last spring it was a bear to get that thing lined up. We were obsessive about the alignment, and it still might not be right, I had to put in a new gimbal bearing last fall.