That bar under the tiller handel used for making the motor not flop around wont tighten nothing i had 2 wrench in there but didnt do anything to help.
Go to iboats.net. Look up your motor and pull up the parts diagram for that area of the motor. Should give you a break down of all the parts. What I would be looking for are their any nylon washers/spacers on it. I have worked on a couple of merc’s that had nylon/plastic washers and bushings in them that will crack and break away over time.
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Charlie Weaver USN/ENC 1965-1979