Thank you but I still have no clue where that goes from that diagram? Sorry I am a complete novice - 66 just seems to be floating in the air!Assuming its newer then 1994 I think its the roller detent item 66
In the link you will find all the controls for 94 and up
https://www.mercruiserparts.com/remote-controls-and-components-1994
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You are a star - thank you - narrows it down - I have scrolled through and am trying to find but would make sense as to why it fell out -= thank you so muchIt appears to go where arrow is pointing. Then again I'm using a diagram of maybe which is not yours. If there is a model number on the throttle this would help. The detent is held in place by other parts like item 35. The pic I'm using above is not exact so this is why I left the link so you could maybe find parts that look more like yours
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