Ian, Thank you very much for taking the time to reply with your
enlightening and detailed answers, I am printing this off as it is very
usefull to me. The gravity feed and things like that are just
somethings I would never have thought about...Dohh

You wrote "I cant help you much but does the missing part mount on the
rod or the
engine?"

I am not sure, the end of the rod can swivel a bit and has a hole in it
around twice the size of this "O" and the outboard has two vertical
holes (about the same size) in the handle but I dont know if that means
anything.

Thank you again.

Dave the novice.