the hydrolic tensioner has to be compressed, there's a set of holes that will line up when you compress it. Take a small alan key and stick it threw the holes so that it keeps the tensioner from opening back up. now put the tensioner with alan key back on block.

now look at the pullie tensioner, you will notice two small holes on the outside of it make sure those holes are to the left of the center bolt holding that pullie. Now tighten that bolt holding the pullie just tight enough so that it keeps the holes from moving from there position.

now put your belt on and align everything....

now go back to the pullie tensioner with the holes and move them clockwise by pushing up with a small falthead, this will turn the pullie and tighten your belt, this is where not having that tool sucks cause you can over tighten or not tighten it enough, i usually go slightly looser than what i want cause the hydrolic tensioner will do the rest. now tighten that bolt holding the pullie tensioner and remove the alan key from the hydrolic tensioner.

hope this makes sense and if not shared_pm me.