Originally Posted by Andrew R Stewart

The usual torque range for retaining arm bolts is 25-30 foot pounds.

But I'll take issue with your comment that one shouldn't retighten these bolts. "(i.e. tighten them, ride, then tighten them some more)." This is done all the time. After the initial build up test ride, after the 30-90 day new bike service and during virtually every tune up That I (and my coworkers) have done. I will further say that failure to retighten crank arms is why so many round out and need replacing. Andy.