Nice, I wish such old service manuals were more freely available for other equipment too. Car ones are generally easy to find, but for some like certain tractors, despite being over 50 years old, aren't freely available and require paying like $120 for a loose leaf copy.
A friend of mine bought a Case 830 gas tractor that stalled out randomly while driving it home and it refused to start again, and another friend came over and tried to "help" by randomly turning all the carb adjustment screws. I thought I could just look up the manual online to reset them properly since it was old as shit and half the people who ever bought them also got manuals for them. Figured it would put us in a good position to diagnose the original problem at that point. But no you gotta pay an extortionate amount for some company to print off a loose paper copy, a free copy of the digital file for printing it was nowhere to be found.