I've had a go at them a couple of years back for the dreadful quality photography and poor paper the manuals are printed on. Especially the bike parts, most of which are tiny compared to a commensurate car part.
They've never improved much if anything, since the 80s..
I don't disagree with Stuart about the visual quality of the book, I have one for my Gen 3, I use it as a form of reference on the few occasions I decide to delve a little deeper. I mainly use it for the torque values at the beginning of most sections for putting everything back together again. They do, but I'm unsure in this case for the K46, offer an on-line annual subscription in high quality colour where you can download and print out the pages you need in the workshop in colour, but it isn't cheap for the subscription service and it is per bike per year if you have different makes/models.