While replacing the water hose in the pre-Alpha this weekend, I did my search in the upper unit for the o-ring for the drive shaft. While in that mode, the flexibel portion of a seal in the lower end of the driveshaft cavity fell out. I have never seen in all the instructions for replacing the impeller any reference to checking this seal. Wedged out the remaining steel portion of the seal.<br /><br />Haven't been able to locate the seal in any online drawings of the upper unit. Need to know the part# and just out of curiosity what the seal seals.<br /><br />Thanks in advance for your information.<br /><br />Swabbie