Go into the manual and see the torque specs listed for that part number/part. You can rent a torque wrench at some hardware stores and set it to the exact specs desired for the part. If u look at buying one they range from 50$-500$ for good ones. I personally paid 200$ for a nice craftsmen one and it has lifetime warranty and has never failed in the 2 years of ownership.
Hope this helped a little and best of luck