Originally Posted by
Muzzer
If you look at the 5th post in this thread you will find a link to the parts list, which is the closest thing you will get to a user manual for this machine. I have the actual user manual but it tells you almost nothing a user would wish to know. There is also a link to my blog where (if you go back near the beginning), you can see a lot of the work I did on mine. I have an AN-SB which is 90% the same machine apart from having a fixed pully / no varispeed.
That's not a die grinder, it's an impact driver. The original factory power drawbar used this arrangement. Yours may even be original, with a replacement driver. One thing that is missing from yours is the cylindrical cover for the PDB.