I have a little 6hp serial number 1552065 IT QUIT PUMPING WATER AND THE IMPELLER ID FROZEN ON TO THE DRIVE SHAFT. any suggestions on removal. it will rotate about a 1/4 turn but will not slide up the drive shaft. I have a new impeller and drive pin coming, but I want get the old one off. I don't want to brute force too much as I don't want to damage the cup. Any help appreciated. Thanks.....Robert
