Completed replacement of pentair nt minimax blower fan. Very easy and saved $300. purchased replacement fan from emotorstore. Craig Bagdon was extremely helpful and determined the correct fan and rotation is Fasco 1-6143. Go save yourself some money and diy. hardest part was getting old fan off motor. used small pulley puller and came right off.
I too used a small pulley puller, and actually had to grind down a little of the underside of the 3 pulleys, so it would fit better.