Hey there mate,
I am the one with the same saw as you, passed down through the family, and along the way the manual was lost, I still haven't had luck, but a guy on my post said it was similar to the Dremel 1671, and they do look close to it, so this is the manual I ended up going with, https://www.manualslib.com/manual/632662/Dremel-1671.html , and it seems to cover everything I needed it too, might help you too.