Howdy! Welcome to the party!
They don't require a lot of torque on those. The specs (specifications <--- see what I did there? :wink

are in the 80 ft-lb range. The washer on the countershaft sprocket is peened over to hold it in place. A firm hand-tightening is sufficient and no need to go crazy on them. Getting that one off the first time is the struggle. :lol: