Try here. Looks like every single PA-2013 manual is available
ftp://ftp.fic.com.tw/motherboard/manual/socket7/pa-2013/
Edit: Not seeing a specific manual for the 2.1 (PCB 2.0) version of the motherboard. From what I could find, even people who bought the board new back in the day had trouble with the jumpers because FIC may have not even released an updated manual for that version of the board.
Here is a page that shoudl help you set up the settings... at least for a K6-2 450.
You will have to play with the jumpers if you have a different CPU.
The thing I remember about the FIC boards is that the jumper settings were fairly easy to figure out by trial/error.
I used to keep sheets when I was experimenting/overclocking and using every single combination of the bus speed jumpers since pretty much every board had undocumented bus speeds.