Lower unit is sitting in living room as I await solenoids ('71 evinrude 60hp) and I opted to pull the impellar out now for a checkup.<br /><br />a) When I pulled the housing up the shaft, the impellar came up with it and I SWEAR I heard a small clunk like something falling out. I also see the notch in the shaft, and the grove in the impellar - did something lock the impellar to the shaft and fall out?<br /><br />b) Should I just replace this impellar no matter what (motor is new to me) or can I safely put it back (still nice and flexible, seems to fit snugly in housing).<br /><br />Thanks.