Yes, it is typical on these fans to have flip the blades over when reversing the polarity.
Oct 30, 2015 / My PT-422 mods Thread Starter #51 OP K KMA Gold Member Joined Sep 15, 2006 Messages 392 Location Owego, NY Tractor PT422 w/ EH72FI engine swap Yes, it is typical on these fans to have flip the blades over when reversing the polarity.