In the FB Branson tractors group there is a sticky which includes downloadable pdf's of several Branson manuals.
One is the 20 series Service manual which is like 311 pages long.
Interestingly, I see nobody but me on the FB group from here but that does mean it's got potential for new info over there. I'm not much of a FB person at all other than some family stuff, a sawmill group for Woodmizer owners and FB Marketplace to buy and sell for free. It has far more traffic than does this website when selling plus you can join localized groups to ensure your items are seen more so in regional rural areas like my own. It's far better than CL which has died off a bunch and must have hurt ebay a lot! But ebay is still the king of certain types of items.
FWIW-there are two Branson tractor groups on FB. One is VG and has lots of owners posting what's often very helpful information. The other group is basically a tractors for sale list which has zero information unless your a potential buyer for a Branson. You will quickly see the differences.