I think I looked at most of the manuals posted, but none are very good for the most important regular maintenance items like step by step procedures for changing oil and adjusting valves. This is stuff that anyone can do and what should be done most often to keep a bike going. Most other items, some people can do, but many folks would take to the shop for...like changing out fork oil and the relatively complicated procedure (compared to most bikes) for changing brake pads.
There is lots of stuff about complete engine disassembly/assembly and the Google Drive one that Jerk posted Monday at 5:16, while it is the best one, repeats itself over and over (for example it has the instrument cluster in two sections with the same info...as is the case for many other items). Not sure why they did this.
I am not an owner yet, but this is of interest to me because I want to do as much maintenance on my bike as possible, and so far the information I really need (regular maintenance) is lacking. Maybe I just haven't searched far enough and all this is obvious to those who have owned a Himalayan for a while.
There is more info out there, have to dig pretty deep sometimes to find it.
That's what's nice about this forum, It's filled with peeps that have done pretty much everything that needs to be done on this bike, plus the bike is built to be worked on by just about anyone, RE made it pretty simple. For example the Fork oil you reference, once you have your bike in front of you you'll be able to see how it all goes together. RE gave us a very modest simple Fork design (pretty much a 70+ year old design), no special tools or fixtures required to change the oil. You'll be surprised at how much service work you'll be able to do yourself.
And anything you can't find in a manual or online is probably right here on this site, and if not, everyone is welcome to ask a question. There are alot of good people here willing to help out...
Oh, and by the way, I just changed my Fork oil a couple of weeks ago, the factory was shy about 100ml's each leg.... oops. The frontend doesn't sag so far now that it has the proper amount of fluid.