I finally bought an early FSM to help better restore #249.  I have the '77 FSM for Blue then moved to digital  since then but the compression of the online FSM's loose a lot of detail.

 

FYI:

 

The book looks much better.  The contrast on the download is a little too much for my eyes.

The '72 and '73 240z FSM's on XenonZcar.com are much higher resolution scans, they can be found here:

http://www.xenonzcar.com/s30/fsm.html

Here is a screen capture of the same page that @Blue shows above, but from the Xenon scan of the '72 manual.

Of course the downside is that the file size is much larger, but well worth it.

Too bad they don't have the 1970 FSM.

This is a not so much of a problem with 260z and 280z FSM's as they mainly used line drawings and not photographs.

I was looking up the procedure for replacing the rear wheel bearings this morning. I looked at the PDF of the 74 manual, and then I looked at the 73 manual PDF. It was like night and day. As @CanTechZ said, the 73 manual PDF is a much higher resolution.