Re: merc 75 ser# od0133--
Here are some numbers to keep handy for when you want parts. It IS a 1990 SN 0D013317 Model No. 1075412LD MERCURY 75 ELPTO
I think if you get the OEM Merc service manual and not an aftermarket, you will find several pictures of the linkage and detailed explanations on how to do a proper Sync-N-Link to get it all working properly. It takes several pages of pictures to fully understand where all the pieces of linkage goes exactly. Which is why I didn't just post a picture to show you.
That OEM service manual part number is 90-13645--2