1991 Accord Balance Shafts Belt Tensioner

On a 1991 Honda Accord LX 4dr I am reassembling an engine after a timing
belt replacement.

On the stud which holds the tensioners for the timing & balance shafts
belt, am I supposed to tighten the nuts all the way down such that the
tensioner pulleys will no longer move tighter/looser, or am I supposed
to leave them just loose enough and then use the double nut concept to
keep them from coming loose.

When I took it apart, these two nuts were tight against the pulleys, but
the previous shop's work was not trustworthy. Logic might dictate that
the double nuts are there in order to permit the tensioners to adjust
with the springs which pull on them, although those seem like puny
springs compared to other engines I've had apart.

Thank You.

 

http://www.honda.co.uk/owner/AccordManual/400/5-35.pdf