I have an OMC impeller that I removed from a motor that sat for five years without running. It’s soft and flexible and has no damage hasn’t taken a hard set. Wondering if anyone has tried to turn one over to get more use out of them.
I would advise against flipping the impeller and running it that way. OMC didn’t recommend it and the impeller (working in reverse) could break a blade. If you have it apart and are not sure, replace the impeller as it is cheaper than ruining your motor due to overheating.