Sorry - it appears that I didn't clearly understand the various parts that are being discussed. Upon closer analysis I was misunderstanding how the tensioner system works. By "bracket" I meant the piece in the realoem diagram that is not numbered, but is located between parts 3 and 5 in the realoem diagram. I had thought that it was part of the tensioner system, but upon reflection it seems that this piece is already on your engine. It looks like it is held in place with 2 bolts. One bolt is next to the blue circle in your picture, and the other is above it. Not sure if there are any other bolts holding this piece in place? If not, can those bolts be easily removed? Then with the bolts removed the "bracket" comes off, the belt tensioner and tensioner lever put on easily, then the complete assembly put back on the engine.
The above is speculation on my part, but if it's only 2 bolts holding that "bracket" in place then it seems like it should work. If not I'm out of ideas