B&S 15.5HP torque spec needed!

[montanaman]

Working on a 15.5 Briggs and Stratton, model 28N707 type 0635A. The rocker stud for the exhaust valve was coming out of the head. I plan to clean the threads and put some mild loctite on it but I'd love to know the torque spec and seem to find it?

Any help appreciated!