There's some manuals for non US models on the internet. There's been some threads here in the Branson section with links. Some of them may be close though the model designations sometimes differ.
Here in the US the only way to get manuals is to buy them from a dealer.
If you don't have one then you can try Dave's in Red Bluff CA or Mr Bitz in North Dakota
Yes the Branson site could be better (and they could have parts number lookup on line) but none of the other manufacturers offer manuals on their sites. It'd be great if they did but I know how much work goes into making a manual and can see why they'd want to recover some of that cost.