Thanks for your help, and diagram posted.
I find it frustrating that the view, with all my itemized diagrams, are from the right side of the engine.

Hi,Ken from Grimsby Ontario Canada here, Seasons Greetings to all.
Here is a pic of my 1988 750
I have had it for 10 years.
Could anyone explain what the small slotted pin/set screw to the right of my spark plug is?
I have been unable to find any views with info on the plug side of the head.