The service manual says to tighten upper bolts first then lower to SPECIFIED Torque, but there is no specified value in the manual that I can find.
yes, I could not find torque ratings for those bolts.
Service manual page 1-12 does have standard torque for Standard bolts
Type 5mm bolt /nut 3.8lb ft
type 6mm bolt /nut 7 lb ft
type 8mm bolt/nut 17 lb ft 8mm flange bolt/nut 20lb ft
type 10mm bolt/nut 25lb ft 10mm flange bolt/nut 29lb ft
type 12mm bolt/nut 40lb ft
I think if you have a hex allen head you need to compare that to a hex socket head for rating.