Wow, only 5 - 10 ft.lb.
I just finished a conversion to a 530 chain, and when placing the front sprocket in position, I used a 12mm, 1.4 inch drive craftsman socket with some 242 loctite on the bolt. I put the socket onto the bolt, then hand-spun the rear tire (while in neutral) until the socket cinched up against the frame. Yeah, that's probably 16 ft.lb, give or take a couple.
...and I figured that it was loose due to inattention by the previous owner!
