QUOTE(technicalninja @ Nov 10 2023, 10:53 AM)
Real Factory service manuals are far better than aftermarket IMO.
On the 914, this is debatable. The Haynes manual literally has the words and images from about 85% of the factory 914 workshop manual. Word for word, image for image. They just put it in far fewer pages, and they only cover the four-cylinder cars.
I believe they skip transmission internals as well, or the equivalence would be even higher.
If you need anything in that ~15%, the Factory manuals are the best. Most of us don't, though, so Haynes is good enough.
.... Of course, you may need the Factory manuals just to make sure that what you need isn't in that 15% .... And a pro really does need to know as much as possible.
--DD