FG-250S

That Fritz Ruler is a little bit tricky cause it does not measure the action as it does the StewMac. Have seen some tutorial in Youtube (italian lenguage) and, if I got it right, that 6th string is on the right "theoretical" action for an acoustic guitar. Above that 6 black line it would be too high, same for the 1 line which is to be used on the 1st string. In any case I didn´t have the opportunity yet to check the guitar in situ. So neck relief and projection are still to be measured.

You know better so I stand to be corrected, the neck relief can be decreased adjusting the truss rod, given that it is fully functional and the neck projection is within limits not falling well below the bridge. Next step should be a work on the saddle which I think has not been filed but as I said before I need to check the real thing first.

Regarding the year, I have seen the model included as "New" in a Japanese Yamaha Catalogue from 1980 ( December?), it was included again in a 1981 catalogue without the "New" tag. But again, you know better.

This link are to a 1980 Catalogue

www.oldguitar.jp/catalog/yamaha/YAMAHA_80_122.jpg

In any case I´ll try to meet the vendor tomorrow and I´ll take measures and pictures.

Thanks for the info CTGull

I´m more familiar with the metric system, but those 5/64" are around 2mm (1.98 mm) and that would be my preferred action as well. I too never used the Fritz Ruler. According with the tutorials I´ve seen, the low E should fall on the line marked with a 6 or slightly below, and that would be considered a normal to low action. Above that line would be too high....but I really don´t know the height of that line in 64th or mm and, as you said, action is (up to a limit) a personal preference.

Thank You for pointing out that the Truss Rod doesn´t affect the action. What I meant is that, before doing anything else I should check: 

1) Neck relief and projection; the relief can be corrected using the truss rod, but if the projection is out of limits it will need a neck reset.

2) IF, the projection is within limits and the truss rod has decreased the relief up to an acceptable minimum curvature...the next steps should be  3) check the nut ( pressing on the 3d fret) and, finally,  the saddle....

If the projection is out of limits ......then better look for something else 

Did I get it right?