Diagram for 6X0-48206-12-00

[cressi-sub]

I have been looking for a breakdown/diagram for this Yamaha remote control 6X0-48206-12-00 and i have not been able to find one. The black cover behind the handle has a screw on one side. I tried turning the screw thinking it held the cover in place but it only got harder as i unscrewed it. Now I'm worried that it is some type of adjustment screw.

[boats.net]

Here is a parts list
2006 and Later 2-stroke Rigging Yamaha Outboard CONTROL FLUSH STANDARD Diagram and Parts